AN13951
Ho ntlafatsa Tšebeliso ea Matla bakeng sa i.MX 8ULP
Tšen. 0 - 30 May 2023
Tlhaloso ea kopo
AN13951 Optimizing Power Consumption for i.MX 8ULP
Boitsebiso ba Tokomane
| Boitsebiso | Litaba |
| Mantsoe a sehlooho | AN13951, i.MX 8ULP, Moralo oa matla, Tšebeliso ea matla, Ntlafatso ea Software |
| Kakaretso | Sengoliloeng sena se hlalosa mokhoa oa ho ntlafatsa ts'ebeliso ea matla a sistimi ka makhetlo a 'maloa maemo a tloaelehileng a nang le motsoako o fapaneng oa domain. |
Selelekela
Lelapa la li-processor tsa i.MX 8ULP le na le ts'ebetsong e tsoetseng pele ea NXP ea li-cores tse peli tsa Arm Cortex-A35 hammoho le Arm Cortex-M33. Moralo ona o kopaneng o thusa sesebelisoa ho tsamaisa lits'ebetso tse ngata tse sebetsang, joalo ka Linux, mokokotlong oa Cortex-A35 le RTOS, joalo ka FreeRTOS, mokokotlong oa Cortex-M33. E boetse e kenyelletsa Fusion DSP bakeng sa molumo o tlaase oa matla le HiFi4 DSP bakeng sa lisebelisoa tse tsoetseng pele tsa molumo le ho ithuta mochine. E shebane le linyeoe le lihlahisoa tsa tšebeliso ea matla a tlase le a tlase haholo.
I.MX 8ULP e na le moralo o rarahaneng le o tsoetseng pele ho koahela linyeoe tse sa tšoaneng tsa tšebeliso, tse arolang SoC likarolong tse tharo tse nang le matla a ikemetseng le a inehetseng le li-clock controls. Sena se fana ka monyetla oa hore basebelisi ba sebelise maemo a fapaneng a ts'ebeliso ka ho kopanya libaka tse fapaneng. Molaetsa ona oa ts'ebeliso o ikemiselitse ho hlalosa mokhoa oa ho ntlafatsa ts'ebeliso ea matla ea boemo ba sistimi maemong a 'maloa a tloaelehileng a kopantseng libaka tse fapaneng.
Hlokomela: Noutu ena ea ts'ebeliso e sebelisa Linux le SDK khoutu ea BSP joalo ka litšupiso le mohlalaamples.
Fetileview
I.MX 8ULP SoC e na le libaka tse tharo tse arohaneng: processor processor (AP), video ea audio ea matla a tlase (LPAV), le libaka tsa nako ea sebele (RT). Litaolo tsa matla le lioache tsa libaka tsena li arohane, 'me lesela la libese la sebaka ka seng se kopantsoe ka thata bakeng sa puisano e sebetsang.
Sebaka sa kopo (APD) se sebelisetsoa komporo ea ts'ebetso e phahameng ka ho sebelisa li-cores tse peli tsa A35 le I/O ea lebelo le holimo joalo ka USB/Ethernet/eMMC. Sebaka sa LPAV (LPAVD) ke sa lits'ebetso tsa multimedia ho kenyelletsa molumo, video, litšoantšo, le lipontšo tse hlokang ts'ebetso e phahameng le mohopolo o moholo oa DDR. Sebaka sa nako ea sebele (RTD) se kenyelletsa konokono ea M33 e tlase, e nyane ea Fusion DSP bakeng sa ts'ebetso ea molumo / lentsoe, uPower bakeng sa taolo ea maemo a matla a SoC kaofela, le Sentinel bakeng sa taolo ea ts'ireletso.
Setšoantšo sa 1. libaka tsa i.MX8ULP
2.1 Moralo oa matla
Libaka tse fapaneng li na le lisebelisoa tsa motlakase tse arohaneng (seporo sa motlakase). Setšoantšo sa 2 se bonts'a morero oa matla oa i.MX 8ULP. Ho na le li-switch tsa 18 x (PS) bakeng sa li-module tsa IP tsa ka hare tsa SoC. Li-module tsena li ka buloa/ tima ke software, ka uPower FW API, bakeng sa taolo e nepahetseng ea matla.
uPower ke taolo e bohareng ea matla ho i.MX 8ULP. Firmware e sebetsang ho uPower e fana ka lintlha tse latelang:
- Selaoli sa phetoho ea mokhoa oa matla.
- Metara ea motlakase bakeng sa tekanyo ea tšebeliso ea libaka tsa lisebelisoa tsa matla.
- Sensor ea mocheso bakeng sa tekanyo ea mocheso oa sesebelisoa.
- Likarolo tsa melaetsa bakeng sa puisano le li-on-chip processors.
- I2C bakeng sa puisano le PMIC.
Ho kena/ho tsoa ka mekhoa ea matla a tlase ho etsoa ka ho letsetsa uPower FW API ho software ea APD kapa ea RTD. Ho lokisa PMIC joalo ka tlhophiso, tlhahiso ea terene ea matla voltage, meeli, joalo-joalo e tlameha ho etsoa ka ho letsetsa uPower FW I2C kapa PMIC APIs.
Setšoantšo sa 2. Mehaho ea matla
2.2 Mekhoa ea matla
Lethathamo la 1 e bonts'a motsoako o fumanehang oa mekhoa ea matla ea CA35 le CM33. SoC ha e tšehetse tse ling tsa metsoako. Bakeng sa lintlha tse eketsehileng mabapi le mokhoa o mong le o mong oa matla, sheba khaolo ea "Power Management" ho i.MX 8ULP Processor Reference Manual (tokomane i.MX8ULPRM).
Lethathamo la 1. mekhoa ea matla ea i.MX8ULP
| CA35 | CM33 | ||||
| E sebetsa | Robala | Boroko bo tebileng | Matla tlase | Matla a tebileng tlase | |
| E sebetsa | EE Boemo ba #1 | EE Boemo ba #3 | EE Boemo ba #3 | NO | NO |
| E sebetsa ka mokhoa o itseng* | EE | EE | EE | NO | NO |
| Robala | EE | EE | EE | NO | NO |
| Boroko bo tebileng* | EE | EE | EE | NO | NO |
| Matla tlase | EE Boemo #2/4 |
EE Boemo #2 |
EE Boemo #2 |
EE Boemo #2 |
EE |
| Matla a tebileng tlase | EE | EE | EE | EE | |
* Linux ha e tšehetse boroko bo tebileng kapa mokhoa o sa sebetseng oa A35.
Lethathamo la 2 'Mapa oa lisebelisoa tsa matla tsa Linux kernel ho mekhoa ea matla ea 8ULP.
Letlapa la 2. Mekhoa ea matla e tšehetsoeng ke Linux BSP
| Matla a Linux | 8ULP mekhoa ea matla |
| Matha | E sebetsa |
| CPU e sa sebetse | Robala |
| Ema haufi | N/A |
| Emisa | Matla tlase |
| Ho tima | Matla a tebileng tlase |
Ho latela maemo le maemo a fapaneng a ts'ebeliso, mosebelisi a ka khetha sebaka se le seng kapa tse peli kapa tse tharo maemong a maholo. Maemo ana a tšebeliso / maemo a ka aroloa ka mekhahlelo e mene e latelang:
- Libaka tsohle li sebetsa - joalo ka oache e bohlale e sebetsang.
- Sebaka sa RTD se sebelisa feela - joalo ka hub ea sensor le ho lemoha mantsoe a bohlokoa a ho tsosa lentsoe ka matla a tlase haholo.
- APD e sebetsa ka LPAV - joalo ka ho sesa ka limmapa le E-Reader paging.
- RTD e sebetsa ka LPAV - joalo ka pontšo ea matla a tlase le ts'ebetso ea molumo oa Hi-Fi.
Maemo ana a mane a tšoailoe Lethathamo la 1. Likhaolo tse latelang li hlalosa mokhoa oa ho ntlafatsa ts'ebeliso ea matla bakeng sa boemo ba 2, 3, le 4. Matlafatso a sebetsang a matla a libaka tsohle a ka sebelisa malebela ho tsoa maemong a mang.
2.3 Mekhoa ea ho khanna
SoC e ka ts'ehetsa mekhoa e fapaneng ea ho khanna: over drive (OD), nominal drive (ND), le under drive (UD), ho bolelang hore SoC e ka matha tlasa vollu e fapaneng ea mantlha.tage nang le libese tse tsamaellanang le maqhubu a IP. Basebelisi ba ka khetha mokhoa o nepahetseng oa ho khanna bakeng sa linyeoe tsa bona tsa tšebeliso le tlhoko ea matla.
BSP ea kamehla e qala SoC ka ho kenya APD/LPAV mokhoeng oa OD le RTD mokhoeng oa ND. Basebelisi ba ka hlophisa U-Boot mme ba jarisa sefate se ikhethileng sa kernel files bakeng sa mokhoa oa ND. Sebaka sa RTD se tšehetsa UD feela.
Lethathamo la 3 e thathamisa lioache tse ling tsa bohlokoa tsa IP tlas'a mekhoa e fapaneng.
Letlapa la 3. Lioache tsa bohlokoa tsa IP tlas'a mekhoa e fapaneng
| Lebitso la oache | Over Drive (1.1 V) Frequency (MHz) | Nominal Drive (1.0 V) Frequency (MHz) |
| CM33_BUSCLK | 108 | 65 |
| DSP_CORECLK | 200 | 150 |
| FlexSPI0/1 | 400 | 150 |
| NIC_AP_CLK | 460 | 241 |
| NIC_PER_CLK | 244 | 148 |
| uSDHC0 | 397 | 200 |
| uSDHC1 (PTE/F) | 200 | 100 |
| uSDHC2 (PTF) | 200 | 100 |
| HIFI4_CLK | 594 | 263 |
| NIC_LPAV_AXI_CLK | 316.8 | 200 |
| NIC_LPAV_AHB_CLK | 158.4 | 100 |
| DDR_CLK | 266 | 200 |
| DDR_PHY | 528 | 400 |
| GPU3D/2D | 316.8 | 200 |
| DCNano | 105 | 75 |
Bakeng sa lioache tse ling, sheba tafole ea maqhubu a oache ho i.MX 8ULP Applications Processor—Industrial Products (document IMX8ULPIEC).
RTD domain name feela
Nahana ka sena SDK Power_mode_switch demo joalo ka exampke fane ka software ea i.MX 8ULP SDK lokolla.
Boemong bona, libaka tsa AP le LPAV li maemong a tlase kapa a tebileng a Power-down, 'me mantlha kapa reset ea M33 e ka li tsosa. RTD domain e ka ba maemong a mahlahahlaha, a boroko, a boroko bo tebileng, kapa a ho theola matla ho latela tšebeliso ea matla le litlhoko tsa nako ea ho tsoha.
Setšoantšo sa 3 le Setšoantšo sa 4 bonts'a tšebeliso ea matla le nako ea ho tsoha bakeng sa mofuta o mong le o mong oa matla a tlase.
Setšoantšo sa 3. Tšebeliso ea matla ka mekhoa e fapaneng ea matla
Setšoantšo sa 4. Nako ea ho tsoha ea tsamaiso ka mekhoa e fapaneng ea matla
3.1 Khetha mokhoa o nepahetseng oa matla a tlase
Mosebelisi o tlameha ho khetha mokhoa o le mong kapa ho feta oa ho boloka matla a tlase ho latela tlhoko. Lintlha tse latelang li lokela ho nkoa:
- Nahana ka tšebeliso ea matla ea SoC, PD <300 µW, boroko bo tebileng <1 mW, boroko <50 mW
- Nahana ka nako ea ho tsoha ho tsoa mefuteng ea matla a tlase, PD> 400 µs, boroko bo tebileng> 60 µs, ho robala > 10 µs
- Nahana ka li-IP tse sebelisoang mefuteng e tlase ea matla, ka ho bua Lethathamo la 4.
Bakeng sa mohlalaampLe:
1. Haeba LPI2C[3] e tlameha ho sebetsa kapa ho sebetsa ka Async, empa eseng CG/PG, sebelisa mokhoa oa Boroko.
2. Haeba FlexSPI e hlokoa hore e sebetse, mokhoa o tlaase ka ho fetisisa oa matla ke ho robala ntle le tsamaiso / oache ea libese e kentsoeng.
Lethathamo la 4. Lintlha tsa mokhoa oa matla (domain ea nako ea sebele)
| Limojule | Mekhoa ea matla | E sebetsa | Robala | Boroko bo tebileng | Matla tlase | Matla a tebileng fatshe |
| Power state domain name | Phepelo ea mantlha = ON, Bias = AFBB le DVS, Sisteme/ Lioache tsa libese = ON, I/O phepelo = ON | Phepelo ea mantlha = ON, Bias = AFBB kapa ARBB, Moqtage = e tsitsitseng, Oache ea Sisteme / Bese = HO BONAHALA (ka boikhethelo), phepelo ea I/O = ON | Phepelo ea mantlha = ON, Bias = RBB Voltage/ Leeme = prog, System/Bus clock = TIMA, I/ 0 phepelo = ON | Phepelo ea mantlha = HO BONAHALA (Mem feela), Bias = RBB, Moqtage/ Leeme = prog, Sisteme/ Wache ea bese = TIMA, I/ 0 phepelo = HO BUA (ka boikhethelo) | Phepelo ea mantlha = OFF, Bias = RBB, Moqtage/ Leeme = prog, Sisteme/ Wache ea bese = TIMA, I/ 0 phepelo = HO BUA (ka boikhethelo) | |
| CCGO | RTD | E sebetsang | E sebetsang | E sebetsa (e lekanyelitsoeng) | PG | PG |
| PLLO | PLL LDO | E sebetsang | E sebetsang | CG | PG | PG |
| PLL1 (Molumo) | PLL LDO | E sebetsang | E sebetsang | CG | PG | PG |
| LPO (1 MHz) | RTD | E sebetsang | E sebetsang | E sebetsang | PG | PG |
| SYSOSC | RTD | E sebetsang | E sebetsang | E sebetsang | PG | PG |
Bakeng sa lintlha tse ling, sheba "Lintlha tsa mokhoa oa matla (domain ea nako ea sebele)" khaolong ea i.MX 8ULP Processor Reference Manual (tokomane i.MX8ULPRM).
Nahana ka tšebeliso ea ho tsosa lentsoe la matla a tlase joalo ka mohlalaample. Mokhoa o tlase oa matla oo mosebelisi a ka o khethang ke boroko bo tebileng. IP ea maekrofono ea IP (MICFIL) e ka sebetsa tlas'a boroko bo tebileng e buletsoe oache ea FRO, e sa sebetseng tlas'a Power-down mode.
3.2 Sebelisa lioache tse nepahetseng
Sebaka sa RTD se na le mehloli e mengata ea oache, joalo ka ha ho bonts'itsoe ho Setšoantšo sa 5: SYSOSC, FRO, LPO, PLL0 (system PLL (SPLL)), le PLL1 (audio PLL (APLL)). Ho sa le joalo, sebaka sa RTD se ka sebelisa sebaka sa VBAT RTC32K/1K oache.
Setšoantšo sa 5. RTD CGC0 setšoantšo sa oache
- Mohloli oa oache oa SYSOSC o tsoa ho kristale e kantle, e tloaelehileng 24 MHz. Mohloli oa PLL0/1 le CM33 core / bese e ka sebelisa mohloli oa oache oa SYSOSC.
- FRO ke oscillator ea mahala e nang le tuner, e ka hlahisang 192 MHz le 24 MHz oache. FRO24 e ka sebelisoa bakeng sa mohloli oa PLL0/1, 'me FRO192 e ka sebelisoa bakeng sa lioache tsa mantlha tsa CM33 / bese.
- LPO e tsitsitse ho 1 MHz, e sebelisoang ke li-module tsa IP tse tlamehang ho sebetsa ka mekhoa e tlaase ea matla joaloka EWM le LPTMR.
- PLL0 e sebetsa ho 480 MHz mme PLL1 ke 528 MHz. PLL0 ke sistimi ea PLL, e sebelisoang ke CM33 core / bese le FlexSPI. PLL1 e sebelisoa ke litsamaiso tsa molumo joalo ka SAI/MICFIL/MQS. Ka bobeli li ka fana ka maqhubu a phahameng a oache bakeng sa CM33 core / bese.
Kaha oache ea mantlha ea CM33 / bese e ka nkuoa ho tsoa FRO kapa SYSOSC, ho molemo ho qoba ho sebelisa PLL0/1 haeba maqhubu a phahameng a sa hlokehe. Ho tima li-PLL ho ka boloka matla haholo.
Haeba li-PLL li sebelisetsoa CM33 ka mokhoa o sebetsang, li tlameha ho tima ka letsoho pele li kena ka mekhoa e tlaase ea matla (ho robala / boroko bo tebileng / matla a tlase) ho boloka matla. Sena se hloka mehato e mengata:
- Numella FRO kapa SYSOSC ka * DSEN bit li-setting ho lirejistara tsa SCR ho latela ts'ebeliso ea Fusion DSP ka mekhoa e tlase ea matla.
- Emela bonnete ba oache ka ho sheba hore na VLD e behiloe bukeng ea SCR.
- Tlosa li-module tsa IP tse sebelisang PLL, kapa u fetole oache ho FRO kapa SYSOSC.
- Fetolela oache ea CM33 ho FRO kapa SYSOSC ka litlhophiso tsa DIV tsa mantlha/bese/tse butle ho CGC0.CM33CLK.
- Emela li-microseconds tse 'maloa. Ho emela setulo sa oache, hlahloba CM33LOCKED bit.
- Tlosa PLL0/1 ka ho hlakola karolo ea SCR PLLEN.
3.3 Tlosa le ho tima keiti ea oache mekhoa ea IP e sa sebelisoeng le karohano ea SRAM
Bakeng sa sebaka sa RTD, li-switches tse 'maloa tsa matla li ka tima/tseba (sheba Karolo ea 7):
- PS0: CM33 core, peripherals, le EdgeLock enclave
- PS1: Fusion DSP mantlha
- PS14: Fusion AON
- PS15: eFuse
Ho SDK, mosebelisi a ka letsetsa UPOWER_PowerOffSwitches(upower_ps_mask_t mask) le UPOWER_PowerOn Switches(upower_ps_mask_t mask) ho tima le ho bula li-module ha ho hlokahala. Letlapa la 7 le bonts'a boleng ba liparamente tsa mask.
Bakeng sa li-peripherals tsa CM33 (IP module) tse sa sebelisoeng, li tlohele e le boemo ba ho tima (boleng bo bocha), kapa u bo tima ka ho hlakola biti ea eona e nolofalitsoeng, joalo ka LPI2C MCR master enable bit. Etsa bonnete ba hore karolo ea taolo ea oache ea PCC e hlakotsoe, mohlalaample, PCC1.PCC_LPI2C0[CGC] hanyane. Sebakeng sa RTD, lioache tsohle tsa IP li ka koaheloa kapa tsa kengoa ke li-module tsa oache tsa PCC.
Karohano ea memori e boetse ke mohopolo oa ho boloka matla haeba mehopolo eo e sa sebelisoe. Ho SDK, mosebelisi a ka letsetsa UPOWER_PowerOffMemPart(uint32_t mask0, uint32_t mask1) le UPOWER_PowerOnMemPart(uint32_t mask0, uint32_t mask1) ho tima le ho bula likarolo tsa memori ha ho hlokahala. Lethathamo la 8 e bonts'a boleng ba liparamente tsa mask0/1.
3.4 Ho kenya mokhoa oa matla a tlase
Pele o kenya mekhoa ea matla a tlase (ho robala / boroko bo tebileng / matla a tlase), mehato e mengata e tlameha ho etsoa ho netefatsa hore tšebeliso ea matla e tlase ka mekhoa eo:
- Litlhophiso tse akaretsang tsa PAD mojuleng oa SIM
Ho na le mefuta e 'meli ea li-PAD tsa I/O ka hare ho SoC: FSGPIO (PTA/B/E/F) le HSGPIO (PTC/D). Ho boloka matla tlas'a mokhoa oa matla a tlase, mosebelisi o lokela ho:
- Tlosa ts'ebetso ea mats'eliso bakeng sa HSGPIO ka ho hlakola karoloana ea COMPE lirejiseteng tsa PTC/D_COMPCELL.
- Fokotsa mefuta ea ts'ebetso ea I/O bakeng sa FSGPIO, e sebetsang ka har'a 1.8 V ka ho beha PTx_OPERATION_RANGE bit ho
DGO_GP10/11 ea RTD_SEC_SIM le DGO_GP4/5 ea APD_SIM. Ho EVK, PTB e sebetsa bakeng sa 1.8 V. Mosebelisi o lokela ho fokotsa lebelo la ts'ebetso ea PTB ho 1.8 V ka ho beha RTD_SEC_SIM[DGO_GP11] = 0x1. - Tlosa li-pin tsa I/O ka ho beha PAD mux ho ts'ebetso ea analog hi-Z Ntle le lithakhisa tse sebelisoang ke GPIO ho tsoha kapa ts'ebetso ea module ka mekhoa ea matla a tlase, lithapo tse ling kaofela tsa PTA/B/C li lokela ho hlophisoa ho mosebetsi oa analog high-Z ho boloka matla. Ho hlakola li-mux bits ho li-rejistara tsa IOMUX0.PCR0_PTA/B/Cx ho ka fihlela sena. Ho SDK, mosebelisi a ka abela 0 ka kotloloho linthong tse hlophisitsoeng tse ka tlase:
PTA: IOMUXC0->PCR0_IOMUXCARRAY0[x] PTB: IOMUXC0->PCR0_IOMUXCARRAY1[x] PTC: IOMUXC0->PCR0_IOMUXCARRAY2[x] Bakeng sa mohlalaample, IOMUXC0->PCR0_IOMUXCARRY0[1] = 0 e ka tima PTA1.
Hlokomela: Kaha PMIC e tlameha ho hlophisoa ka I2C (PTB10/11) nakong ea phetoho ea mokhoa oa matla, u ke ke ua tima liphini tsena.
Ho boloka phini ea I/O e sebetsa joalo ka mohloli oa ho tsosa, litlhophiso tse ka tlase li lokela ho etsoa bakeng sa mekhoa e fapaneng ea matla:
- Mokhoa oa ho theola matla:
1. Numella pinana ea phini liregiseng tsa WUU0 PE1/PE2.
2. Lokisa pin mux ho IOMUXC0->PCR0_IOMUXCARRYx ho WUU0_Pxx mosebetsi.Bakeng sa lintlha, sheba tafole ea I / Osignal e kentsoeng ho i.MX 8ULP Processor Reference Manual (tokomane i.MX8ULPRM).
- Mokhoa oa ho robala / oa ho robala ka botebo: Hlophisa lirekoto tsa taolo ea tšitiso ea sehlopha sa GPIO (GPIOx-> ICR) ka nepo. - Bontša li-PLL - Fetola lioache tsa mantlha / libese ho FRO kapa LPO.
- Hlophisa PMIC ho lokisa phallo ea motlakasetage bakeng sa mekhoa e tlaase ea matla
i.MX 8ULP e tšehetsa ho lokisoa ha VDD_DIG0/1/2 seporo sa motlakase voltage kapa ka kotloloho tima liporo tse ling (feela tšehetso switch tima LSW1 VDD_PTC ho EVK ea hajoale le SDK tlas'a mekhoa ea ho theola matla) nakong ea phetoho ea mekhoa ea matla. Ho theola molumotage ka mekhoa e tlaase ea matla e ka fokotsa tšebeliso ea matla ka tsela e atlehang.
Ho tima liporo tse ling ho ka khaola motlakase ka kotloloho ho boloka matla. Lethathamo la 5 le bonts'a voltaglikarolo tsa VDD_DIG0/1 tlas'a mekhoa e fapaneng ea matla (VDD_DIG2 e tlameletsoe le DIG1 botong ea EVK. E ka fetoloa mmoho le VDD_DIG1).
Letlapa la 5. Phallo ea motlakase voltage tlas'a mekhoa e fapaneng ea matla
Seporo sa motlakase E sebetsa Robala Boroko bo tebileng Matla tlase VDD_DIGO 1.05 V 1.05 V 0.73 V 0.65 V VDD_DIG1 1.05 V 1.05 V 0.73 V 0.73 V Ho theola molumo oa lentsoetage ea liporo tsa motlakase, mosebelisi o lokela ho bolella uPower mokhoa oa ho lokisa PMIC nakong ea phetoho ea matla ka ho kenyelletsa lintho tsa ps_rtd_pmic_reg_data_cfgs_t sebopeho ho pwr_sys_cfg->ps_rtd_ pmic_reg_data_cfg[] array. Nka PCA9460 PMIC ho EVK joalo ka example ka tlase:
1. Kenya mokhoa oa ho theola matla:
a. Ka tlase BUCK2 (VDD_DIG0) ho isa ho 0.65 V.
b. Tima LSW1 bakeng sa phepelo ea motlakase ea PTC I/O.
2. Tsoa ka mokhoa oa ho theola matla:
a. Phahamisa BUCK2 (VDD_DIG0) ho khutlela ho 1.0 V.
b. Bulela LSW1 bakeng sa phepelo ea motlakase ea PTC I/O.
Ka sebopeho, setho sa power_mode se hlalosa mekhoa ea matla e lebeletsoeng bakeng sa tlhophiso ena ea PMIC, mohlalaample, PD_RTD_PWR_MODE, ho bolelang hore tlhophiso ena e sebelisoa ha mokhoa oa matla o fetisetsoa ho theola matla. I2c_addr ke aterese ea ngoliso ka har'a PMIC, 'me i2c_data ke boleng ba rejisetara e tlamehang ho hlophisoa.
Bakeng sa boitsebiso bo eketsehileng mabapi le aterese ea ngoliso le li-bits, sheba PCA9460, Power Management IC bakeng sa i.MX 8ULP Data Sheet (tokomane PCA9460DS). - Seta uPower bakeng sa switch ea motlakase, switch ea partition ea memori, le tlhophiso ea PAD:
Bakeng sa libopeho tsena tse peli bakeng sa phetoho ea mokhoa oa matla, bua ka lpm.c ho power_mode_switch demo.
Mosebelisi a ka boloka li-setting tseo li sa sebetsoa ntle le haeba ho hlokahala litlhophiso tse ling joalo ka, ho tima / ho tima, li-module tse ling tsa IP, le pokello ea memori. Basebelisi ba ka bulela/ tima li-switches tsa motlakase ka ho seta swt_board[0]: SWT_BOARD(ho bulela/tima likotoana, limaske). Tlhaloso ea li-bits e ka fumanoa ho Lethathamo la 7. Matla a ho bulela / ho tima mohopolo o ka etsoa ka ho seta swt_mem[0]: SWT_MEM(SRAM Ctrl array bits, SRAM peripheral bits, limaske). Tlhaloso ea li-bits e ka fumanoa ho Lethathamo la 8.
Bakeng sa lintlha tse ling mabapi le litlhophiso tsa phetoho ea mokhoa oa matla oa uPower, sheba ho UPower Firmware User's Guide (tokomane PHAHAMAFWUG). - Letsetsa uPower bakeng sa phetoho ea motlakase. Nka mokhoa oa ho theola motlakase joalo ka mohlalaample, bua ka mosebetsi oa LPM_SystemPowerDown(void) ho SDK power_mode_switch demo.
Kamora hore sistimi e tsohe ho tsoa mefuteng e tlase ea matla, mosebelisi o tlameha ho khutlisa litlhophiso tsohle tsa ngoliso pele a kena. Bakeng sa mohlalaample, ho litlhophiso tsa IOMUXC, mosebelisi a ka sebelisa static array variable ho boloka boleng ba PCR0 eohle le ho e khutlisa.
Sebaka sa APD se sebetsa le LPAV
Nka NXP Linux tokollo e le example sistimi e sebetsang bakeng sa domain name ea APD.
4.1 Kenya RTD borokong
Ho boloka sebaka sa RTD ka mokhoa oa Boroko ho ka boloka hoo e ka bang 20 mW ~ 40 mW ha e bapisoa le mokhoa o sebetsang. Hape, etsa bonnete ba hore lithakhisa tsa GPIO tse sa sebelisoeng li tima.
4.2 Tlosa IP e sa sebelisoeng le likhoele ho Linux DTS (sefate sa sesebelisoa)
Thibela node ea sesebelisoa e ka qoba ho matlafatsa sesebelisoa sena kapa ho senya oache ea eona. Bakeng sa mohlalaample, ho tima GPU3D mohloling oa sefate sa sesebelisoa (DTS):
Ho thibela sesebelisoa sa matla sa PS7 hore se se ke sa bulela, tima GPU3D. Haeba DCNano, MIPI DSI/CSI, le GPU2D kaofela li holofetse, PLL4 ha e sebetse.
Ho qoba ho nolofalletsa I/O PAD bakeng sa lithakhisa tseo, tima lithakhisa tse sa sebelisoeng ho pinctrl node.
4.3 Sebelisa DVFS
i.MX 8ULP Linux e tšehetsa voltage le likarolo tsa ho lekanya khafetsa, tse tsejoang ka molao e le DVFS lipolaneteng tse ling tsa i.MX. Molumotaglikarolo tsa e/frequency scaling ha li sebelisoe ka matla ho software. Mosebelisi o tlameha ho fetoha a sebelisa Linux kernel sysfs. Ho sebelisa VFS, kenya imx8ulp-evk-nd.dtb joalo ka sefate sa kamehla sa sesebelisoa ho qala sistimi. Ebe u kenya mokhoa oa libese tse tlase ka:
Kernel e etsa liphetoho tse latelang:
- Fokotsa maqhubu a mantlha a DDR ho tloha ho 528 MHz ho isa ho 96 MHz.
- Fokotsa oache ea APD NIC ho 192 MHz ka ho sebelisa FRO joalo ka mohloli oa oache ho fapana le PLL.
- Fokotsa oache ea LPAV AXI ho 192 MHz ka ho sebelisa FRO joalo ka mohloli oa oache ho fapana le PLL.
- Fokotsa oache ea A35 cpu ho isa ho 500 MHz.
- Fokotsa seporo sa motlakase sa BUCK3 (VDD_DIG1/2) voltage ho 1.0 V ho tloha 1.1 V.
Tsoa 'me u khutlele tseleng ea libese tse phahameng:
4.4 Sebelisa mokhoa oa ho khanna ka lebitso (VDD_DIG1/2 1.0 V)
i.MX 8ULP SoC e sebetsa ka mokhoa o fetelletseng ka mokhoa oa kamehla oa U-Boot le kernel. Haeba ts'ebetso e phahameng e se tlhokahalo ea mantlha, mosebelisi a ka tsamaisa SoC ka mokhoa o ikhethileng oa drive boot ho boloka matla. Ke tlhophiso e tsitsitseng; mosebelisi ha a khone ho fetola molumo ka matlatage kapa frequency ka mor'a ho qala.
U-Boot: Haha U-Boot ka tlhophiso ea imx8ulp_evk_nd_defconfig. E etsa liphetoho tse latelang:
- Fokotsa seporo sa motlakase sa VDD_DIG1/2 (BUCK3) ho isa ho 1.0 V ha u qala.
- Hlophisa oache ea DDR ho 266 MHz sebakeng sa 528 MHz.
- Fokotsa oache ea LPAV/APD NIC ho isa ho 192 MHz.
- Fokotsa oache ea mantlha ea A35 ho isa ho 750 MHz.
Kernel: load imx8ulp-evk-nd.dtb booting. E fokotsa oache ea GPU2D/3D ho fihla ho 200 MHz, HiFi4 DSP core
oache ho 260 MHz, uSDHC0 ho 194 MHz, le uSDHC1/2 ho 97 MHz.
RTD domain name e sebetsa le LPAV
Nka "ponts'o ea kamehla" joalo ka mohlalaample, e fumaneha ka lengolo lena la kopo. Tabeng ena, RTD e fihlella sebali sa ponts'o sa DCNano ho bonts'a litaba ho PSRAM. Bakeng sa lintlha tse ling, sheba khoutu e hokeletsoeng lengolong lena la kopo.
5.1 Numella sebaka sa LPAV
Kamora hore Linux e emise, sebaka sa AP le LPAV se kena ka mokhoa oa Power-down. RTD e tlameha ho nka beng ba sebaka sa LPAV ho tsoa ho APD pele:
- SIM_RTD_SEC.SYSCTRL0[LPAV_MASTER_CTRL] = 0 // e beha RTD hore e be sebaka se ka sehloohong sa LPAV
- SIM_RTC_SEC.LPAV_MASTER_ALLOC_CTRL = 0 // e abela LPAV master IP ho RTD
- SIM_RTC_SEC.LPAV_SLAVE_ALLOC_CTRL = 0 // e abela LPAV lekhoba IP ho RTD
Ebe, qala hape matla a mantlha a VDD_DIG2 (BUCK3) a sebaka sa LPAV ho 1.05 V kapa 1.1 V ho netefatsa hore li-IP tsohle tse ho LPAV li sebetsa hantle ka uPower upwr_vtm_pmic_config() API.
Qetellong, ntša sebaka sa LPAV ho tloha ho Power-down mode ho ea ho mokhoa o sebetsang:
Tabeng ea tšebeliso e lulang e le teng, mosebelisi o tlameha ho bulela tse latelang ho etsa hore phaephe eohle ea ponts'o e sebetse:
- Sesebelisoa sa matla sa MIPI-DSI
- Likarolo tsa memori tsa sebali sa ponts'o sa DCNano
- MIPI-DSI
- FlexSPI FIFO buffers
5.3 Hlophisa lioache
Sebaka sa LPAV se na le PLL e le 'ngoe feela bakeng sa mehloli ea oache. Kahoo mosebelisi o tlameha ho e nolofalletsa le PFD ea eona ho khanna li-IP.
Numella PLL4 ka PFD le PFDDIV ea eona
Khetha PLL4 PFD0DIV1 e le mohloli oa oache oa DCNano 'me u nolofatse oache ea eona ho PCC:
Kamora hore sesebelisoa sa motlakase se buloe 'me lioache li se li lokile, mosebelisi a ka sebelisa likhanni tsa SDK ho fihlella le ho laola li-IP tsa domain ea LPAV.
Letlapa la 6 le thathamisa litokomane tse ling le lisebelisoa tseo ho ka buuoang ka tsona bakeng sa tlhaiso-leseling e batsi. Tse ling tsa litokomane tse thathamisitsoeng ka tlase li ka fumaneha feela tlas'a tumellano ea ho se senole (NDA). Ho kopa phihlello ea litokomane tsena, ikopanye le moenjiniere oa likopo tsa lehae (FAE) kapa moemeli oa thekiso.
Letlapa la 6. Litokomane / lisebelisoa tse amanang
| Tokomane | Sehokelo/mokhoa oa ho kena |
| PCA9460, Power Management IC bakeng sa i.MX 8ULP Data Sheet (document PCA9460DS) | PCA9460DS |
| Tataiso ea mosebelisi ea uPower Firmware (tokomane UPOWERFWUG) | PHAHAMAFWUG |
| i.MX 8ULP Reference Manual (tokomane i.MX8 ULPRM) Ikopanye le moenjiniere oa lits'ebetso tsa sebaka sa NXP (Moemeli. | Ikopanye le moenjiniere oa lits'ebetso tsa sebaka sa NXP (FAE) kapa moemeli oa thekiso. |
| i.MX 8ULP Applications Processor—Lihlahisoa tsa Indasteri (tokomane IMX8ULPIEC) | Ikopanye le moenjiniere oa lits'ebetso tsa sebaka sa NXP (FAE) kapa moemeli oa thekiso. |
| MCUXpresso SDK Sehahi | https://mcuxpresso.nxp.com/en/welcome |
Sehlomathiso
Lethathamo la 7 e bonts'a lebitso, nomoro e utloahalang, le biti bakeng sa li-switches tsa matla.
Letlapa la 7. Liphetoho tsa Matla
| Mosebetsi | Phetoho ea matla a utloahalang | Bit |
| CM33 | PSO | 0 |
| Fusion | PS1 | 1 |
| A35[0] Koko | PS2 | 2 |
| A35[1] Koko | PS3 | 3 |
| Mercury L2 Cache [1] | PS4 | 4 |
| NIC e potlakileng / Mercury | PS5 | 5 |
| Phetolelo ea APD | PS6 | 6 |
| GPU3D | PS7 | 7 |
| HiFi4 | PS8 | 8 |
| Molaoli oa DDR | PS9 | 9 |
| PXP, EPDC | PS13 | 10 |
| MIPI-DSI | PS14 | 11 |
| MIPI CSI | PS15 | 12 |
| NIC AV / Periph | PS16 | 13 |
| Fusion AO | PS17 | 14 |
| FUSE | PS18 | 15 |
| uPower | PS19 | 16 |
Lethathamo la 8 e bonts'a karoloana le lebitso la selaolo se seng le se seng sa karohano ea memori.
Letlapa la 8. Memori partition ctrls
| SRAM CTRL ARRAY_O (APD/LPAV) MaskO |
SRAM CTRL ARRAY_1 (RTD) Mask1 |
||
| Bit | Mehopolo ea laoloa | Bit | Mehopolo ea laoloa |
| 0 | CA35 Core 0 L1 cache | 0 | Casper RAM |
| 1 | CA35 Core 1 L1 cache | 1 | DMAO RAM |
| 2 | L2 Cache 0 | 2 | FIexCAN RAM |
| 3 | L2 Cache 1 | 3 | FIexSPIO FIFO, Buffer |
| 4 | L2 Cache lehlatsipa/tag | 4 | FlexSPI1 FIFO, Buffer |
| 5 | CAAM Sireletsehile RAM | 5 | Cache ea CM33 |
| 6 | RAM ea DMA1 | 6 | RAM ea PowerQuad |
| 7 | FlexSPI2 FIFO, Buffer | 7 | RAM ea ETF |
| 8 | SRAMO | 8 | Sentinel PKC, Data RAM1, Inst RAMO/1 |
| 9 | AD ROM | 9 | Sentinel ROM |
| 10 | USBO TX/RX RAM | 10 | uPower IRAM/DRAM |
| 11 | uSDHCO FIFO RAM | 11 | uPower ROM |
| 12 | uSDHC1 FIFO RAM | 12 | CM33 ROM |
| 13 | uSDHC2 FIFO le USB1 TX/RX RAM | 13 | Karolo ea SSRAM 0 |
| 14 | RAM ea GIC | 14 | Karolo ea SSRAM 1 |
| 15 | ENET TX FIXO | 15 | Karolo ea SSRAM 2,3,4 |
| 16 | E bolokiloe (Brainshift) | 16 | Karolo ea SSRAM 5 |
| 17 | Tokiso ea DCNano Tile2Linear le RGB | 17 | Karolo ea SSRAM 6 |
| 18 | DCNano Cursor le FIFO | 18 | Karolo ea SSRAM 7_a (128 kB) |
| 19 | EPDC LUT | 19 | Karolo ea SSRAM 7_b (64 kB) |
| 20 | EPDC FIFO | 20 | Karolo ea SSRAM 7_c (64 kB) |
| 21 | RAM ea DMA2 | 21 | Sentinel Data RAM0, Inst RAM2 |
| 22 | GPU2D RAM Sehlopha sa 1 | 22 | Reserved |
| 23 | GPU2D RAM Sehlopha sa 2 | 23 | |
| 24 | GPU3D RAM Sehlopha sa 1 | 24 | |
| 25 | GPU3D RAM Sehlopha sa 2 | 25 | |
| 26 | HIFI4 Cache, IRAM, DRAM | 26 | |
| 27 | ISI Buffers | 27 | |
| 28 | MIPI-CSI FIFO | 28 | |
| 29 | MIPI-DSI FIFO | 29 | |
| 30 | PXP Cache, Buffers | 30 | |
| 31 | SRAM1 | 31 | |
Ela hloko mabapi le khoutu ea mohloli tokomaneng
Exampkhoutu e bontšitsoeng tokomaneng ena e na le litokelo tse latelang tsa litokelo tsa molao le laesense ea BSD-3-Clause:
Copyright YYYY NXP Kabo bocha le tšebeliso ea mohloli le mefuta ea binary, e nang le liphetoho kapa ntle le eona, e lumelletsoe hafeela maemo a latelang a phethiloe:
- Kabo-bocha ea khoutu ea mohloli e tlameha ho boloka tsebiso e kaholimo ea litokelo, lenane lena la maemo le boitlamo bo latelang.
- Liphatlalatso ka mokhoa oa binary li tlameha ho hlahisa tsebiso e kaholimo ea litokelo, lenane lena la maemo le boits'oaro bo latelang bo hlahang litokomaneng le/kapa lisebelisoa tse ling li tlameha ho fanoa mabapi le kabo.
- Ha ho na lebitso la mong'a litokelo kapa mabitso a bafani ba eona le ka sebelisoang ho ts'ehetsa kapa ho khothaletsa lihlahisoa tse tsoang ho software ena ntle le tumello e tsoang pele.
SOFTWARE ENA E FUMANA KE BATHO BA TSOANG LE BAASEHI "JOALOKAHA HO LE" LE LITEISETSO TSE FELENG KAPA TSE BONANG, HO kenyeletsoa, EMPA EMPA HO FUMANA, LITEKISO TSA MOTHO OA THEKISO LE HO LOKELA HO SEBELISA LEBAKA LE KHETHANG. IN HA HO KETSAHALO EA TLA HO COPYRIGHT HOLDER KAPA BATHO BA TLA NA BA TLAS'A BAKENG SA LITABA TSA KA HO TSOHLE, TSOHLE, TSA TLOAELO, KHETHEHILENG, MOHLALA, KAPA LITABA TSA LITS'ITSO (Ho kenyeletsoa, EMPA E SE KE UA LIMELISO HO, theko ea thepa, ts'ebeliso ea thepa; KAPA TŠITISO EA LIKHOEBO) LE HOJA E BAKILE LE HO KA KHOPOLO EFE KA EFE EA MOLAMO, E KA BA KA KONTERAKANENG, MOLATO OO O Tletseng, KAPA TORT (HO KENYA LE BOHLOKOA KAPA HO BANG) E HLAHANG KA TSELA EFE KA TENG HO TŠEBELETSO EA SOFTWARE ENA, LE HAEBA KELETSO.
Nalane ea ntlafatso
Lethathamo la 9 e akaretsa liphetoho tse entsoeng tokomaneng ena ho tloha ha e qala ho lokolloa.
Lethathamo la 9. Histori ea ntlafatso
| Nomoro ea ntlafatso | Letsatsi | Liphetoho tse kholo |
| 0 | La 30 Motšeanong 2023 | Tokollo ea pele |
Boitsebiso ba molao
10.1 Litlhaloso
Moralo - Boemo ba moralo oa tokomane bo bontša hore litaba li ntse li le tlas'a ts'ebetso ea ka hareview le ho latela tumello ea molao, e ka bakang liphetoho kapa ho eketsoa. Li-Semiconductors tsa NXP ha li fane ka boemeli kapa litiisetso mabapi le ho nepahala kapa botlalo ba tlhahisoleseling e kenyellelitsoeng tokomaneng ea tokomane mme e ke ke ea ba le boikarabello bakeng sa litlamorao tsa ts'ebeliso ea tlhaiso-leseling e joalo.
10.2 Boitlhotlhollo
Tiisetso e fokolang le melato - Litaba tse tokomaneng ena ho lumeloa hore li nepahetse ebile lia tšepahala. Leha ho le joalo, li-Semiconductors tsa NXP ha li fane ka litlatsetso kapa litiisetso, tse hlahisitsoeng kapa tse boletsoeng, mabapi le ho nepahala kapa botlalo ba tlhahisoleseling e joalo mme e ke ke ea ba le boikarabello bakeng sa litlamorao tsa ts'ebeliso ea tlhahisoleseling e joalo. Li-Semiconductors tsa NXP ha li nke boikarabello bakeng sa litaba tse tokomaneng ena haeba li fanoe ke mohloli oa tlhahisoleseling kantle ho li-Semiconductors tsa NXP.
Ha ho ketsahalo e tla tlameha ho jara li-Semiconductors tsa NXP bakeng sa ts'enyehelo efe kapa efe e sa tobang, e sa lebelloang, ea kotlo, e khethehileng kapa ea litlamorao (ho kenyeletsoa - ntle le meeli, phaello e lahlehileng, chelete e lahlehileng, tšitiso ea khoebo, litšenyehelo tse amanang le ho tlosoa kapa ho nkeloa sebaka ha lihlahisoa leha e le life kapa litefello tsa ho sebetsa bocha) ha se lits'enyehelo tse joalo li ipapisitse le tort (ho kenyeletsoa bohlasoa), tiisetso, tlolo ea konteraka kapa khopolo efe kapa efe ea molao.
Ho sa tsotellehe litšenyehelo leha e le life tseo moreki a ka bang le tsona ka lebaka leha e le lefe, kakaretso ea NXP Semiconductors' le boikarabelo bo eketsehileng ho bareki bakeng sa lihlahisoa tse hlalositsoeng mona li tla fokotsoa ho latela Melao le lipehelo tsa thekiso ea khoebo ea NXP Semiconductors.
Tokelo ea ho etsa liphetoho - Li-Semiconductors tsa NXP li na le tokelo ea ho etsa liphetoho tlhahisoleseling e phatlalalitsoeng tokomaneng ena, ho kenyeletsoa ntle le meeli le litlhaloso tsa sehlahisoa, ka nako efe kapa efe ntle le tsebiso. Tokomane ena e nka sebaka sa tlhahisoleseling eohle e fanoeng pele ho phatlalatsoa.
E loketse ho sebelisoa - Lihlahisoa tsa li-Semiconductors tsa NXP ha lia etsoa, tsa lumelloa kapa ha lia lumelloa hore li tšoanelehe bakeng sa ts'ehetso ea bophelo, lits'ebetso tsa bohlokoa tsa bophelo kapa ts'ireletso kapa lisebelisoa, kapa lits'ebetsong moo ho hloleha kapa ho se sebetse hantle ha sehlahisoa sa NXP Semiconductors ho ka lebelloang ho fella ka kotsi ya motho, lefu kapa tshenyo e kgolo ya thepa kapa tikoloho. Li-Semiconductors tsa NXP le bafani ba eona ha ba amohele boikarabelo ba ho kenyelletsa le / kapa tšebeliso ea lihlahisoa tsa NXP Semiconductors thepa kapa likopo tse joalo, kahoo ho kenyelletsoa le / kapa tšebeliso e joalo e kotsing ea moreki ka boeena.
Lisebelisoa - Lisebelisoa tse hlalositsoeng mona bakeng sa efe kapa efe ea lihlahisoa tsena li etselitsoe merero ea litšoantšo feela. Li-Semiconductors tsa NXP ha li fane ka boemeli kapa tiisetso ea hore lits'ebetso tse joalo li tla tšoaneleha bakeng sa ts'ebeliso e boletsoeng ntle le liteko tse ling kapa phetoho.
Bareki ba ikarabella bakeng sa moralo le ts'ebetso ea lits'ebetso le lihlahisoa tsa bona ba sebelisa lihlahisoa tsa NXP Semiconductors, 'me NXP Semiconductors ha e amohele boikarabello bakeng sa thuso leha e le efe ka likopo kapa moralo oa sehlahisoa sa bareki. Ke boikarabelo ba moreki feela ho fumana hore na sehlahisoa sa NXP Semiconductors se loketse le hore se loketse lits'ebetso tsa moreki le lihlahisoa tse reriloeng, hammoho le ts'ebeliso e reriloeng le ts'ebeliso ea bareki ba motho oa boraro. Bareki ba tlameha ho fana ka litšireletso tse nepahetseng tsa moralo le ts'ebetso ho fokotsa likotsi tse amanang le lits'ebetso le lihlahisoa tsa bona.
Li-Semiconductors tsa NXP ha li amohele sekoloto leha e le sefe se amanang le ho se be teng, tšenyo, litšenyehelo kapa bothata bo ipapisitseng le bofokoli bofe kapa bofe kapa bofokoli ba lits'ebetso kapa lihlahisoa tsa moreki, kapa kopo kapa ts'ebeliso ea bareki ba motho oa boraro. Moreki o na le boikarabello ba ho etsa liteko tsohle tse hlokahalang bakeng sa lits'ebetso le lihlahisoa tsa moreki a sebelisa lihlahisoa tsa NXP Semiconductors ho qoba ho se be teng ha lits'ebetso le lihlahisoa kapa ts'ebeliso kapa ts'ebeliso ea bareki ba motho oa boraro. NXP ha e amohele melato leha e le efe tabeng ena.
Melao le lipehelo tsa thekiso ea khoebo - Lihlahisoa tsa NXP Semiconductors li rekisoa ho latela lipehelo le maemo a kakaretso a thekiso ea khoebo, joalo ka ha e phatlalalitsoe ho http://www.nxp.com/profile/ lipehelo, ntle le haeba ho lumellanoe ka mokhoa o mong tumellanong e nepahetseng e ngotsoeng ea motho ka mong. Haeba tumellano ea motho ka mong e phetheloa ho tla sebetsa feela lipehelo le maemo a tumellano e amehang. Ka hona, li-Semiconductors tsa NXP li hanyetsa ka ho hlaka ho sebelisa lipehelo le lipehelo tse akaretsang tsa moreki mabapi le ho rekoa ha lihlahisoa tsa NXP Semiconductors ke moreki.
Taolo ea kantle ho naha - Tokomane ena hammoho le (li) lintho tse hlalositsoeng mona li ka ipapisa le melaoana ea taolo ea kantle ho naha. Ho romela kantle ho naha ho ka hloka tumello ea pele ho tsoa ho balaoli ba nang le bokhoni.
E loketse ho sebelisoa lihlahisoa tse tšoanelehang tseo e seng tsa likoloi - Ntle le haeba leqephe lena la data le bolela ka ho hlaka hore sehlahisoa sena se khethehileng sa NXP Semiconductors se na le likoloi tse tšoanelehang, sehlahisoa ha sea tšoaneleha bakeng sa tšebeliso ea likoloi. Ha e tšoanelehe kapa hona ho lekoa ho latela tlhahlobo ea likoloi kapa litlhoko tsa kopo. Li-Semiconductors tsa NXP ha li amohele boikarabelo ba ho kenyelletsa le/kapa tšebeliso ea lihlahisoa tse tšoanelehang tseo e seng tsa likoloi ho thepa ea likoloi kapa likopo.
Haeba moreki a sebelisa sehlahisoa ho rala le ho sebelisoa lits'ebetsong tsa likoloi ho latela maemo le maemo a likoloi, moreki (a) o tla sebelisa sehlahisoa ntle le tiisetso ea sehlahisoa sa NXP Semiconductors bakeng sa lits'ebetso tse joalo tsa koloi, ts'ebeliso le litlhaloso, le ( b) Neng kapa neng ha moreki a sebelisa sehlahisoa bakeng sa lits'ebetso tsa likoloi ho feta lintlha tsa NXP Semiconductors' ts'ebeliso e joalo e tla ba kotsing ea moreki ka boeena, 'me (c) moreki o lefella li-NXP Semiconductors ka botlalo bakeng sa melato efe kapa efe, tšenyo kapa liqoso tsa sehlahisoa tse hlōlehileng ka lebaka la moralo le ts'ebeliso ea bareki. sehlahisoa sa lisebelisoa tsa likoloi ho feta tiisetso e tloaelehileng ea NXP Semiconductors le litlhaloso tsa sehlahisoa sa NXP Semiconductors.
Liphetolelo — Phetolelo e seng ea Senyesemane (e fetoletsoeng) ea tokomane, ho kenyeletsoa le litaba tsa molao tse tokomaneng eo, ke tsa tšupiso feela. Phetolelo ea Senyesemane e tla sebetsa haeba ho ka ba le phapang lipakeng tsa liphetolelo tse fetoletsoeng le tsa Senyesemane.
Tshireletso - Moreki oa utloisisa hore lihlahisoa tsohle tsa NXP li ka ba tlas'a bofokoli bo sa tsejoeng kapa li ka ts'ehetsa maemo a ts'ireletso kapa litlhaloso tse nang le mefokolo e tsejoang. Moreki o ikarabella bakeng sa moralo le ts'ebetso ea lits'ebetso le lihlahisoa tsa hae bophelong bohle ba bona ho fokotsa litlamorao tsa bofokoli bona lits'ebetsong le lihlahisoa tsa moreki. Boikarabello ba moreki bo boetse bo fetela ho litheknoloji tse ling tse bulehileng le/kapa tsa botho tse tšehetsoeng ke lihlahisoa tsa NXP hore li sebelisoe lits'ebetsong tsa bareki. NXP ha e amohele boikarabelo ba ho ba kotsing. Moreki o lokela ho lekola lintlafatso tsa ts'ireletso khafetsa ho tsoa ho NXP le ho li latela ka nepo.
Moreki o tla khetha lihlahisoa tse nang le likarolo tsa ts'ireletso tse kopanang hantle le melao, melaoana, le maemo a ts'ebeliso e reriloeng mme a etse liqeto tsa mantlha tsa moralo mabapi le lihlahisoa tsa hae mme o na le boikarabello ba ho latela litlhoko tsohle tsa molao, tsa tsamaiso le ts'ireletso mabapi le lihlahisoa tsa hae, ho sa tsotelehe. ea tlhahisoleseling efe kapa efe kapa tšehetso e ka fanoang ke NXP.
NXP e na le Sehlopha sa Karabelo ea Ketsahalo ea Ts'ireletso ea Lihlahisoa (PSIRT) (e fumaneha ho PSIRT@nxp.com) e laolang lipatlisiso, tlaleho, le tokollo ea tharollo ho bofokoli ba ts'ireletso ea lihlahisoa tsa NXP.
NXP BV - NXP BV ha se khamphani e sebetsang mme ha e aba kapa ho rekisa lihlahisoa.
Matšoao a khoebo
Tlhokomeliso: Mefuta eohle e boletsoeng, mabitso a lihlahisoa, mabitso a lits'ebeletso, le matšoao a khoebo ke thepa ea beng ba tsona ka ho fapana.
NXP - letshwao la mantswe le logo ke matshwao a kgwebo a NXP BV
AMBA, Arm, Arm7, Arm7TDMI, Arm9, Arm11, Artisan, big.LITTLE, Cordio, CoreLink, CoreSight, Cortex, DesignStart, DynamIQ, Jazelle, Keil, Mali, Mbed, Mbed Enabled, NEON, POP, RealView, SecurCore, Socrates, Thumb, TrustZone, ULINK, ULINK2, ULINK-ME, ULINKPLUS, ULINKpro, μVision, Versatile — ke matshwao a kgwebo le/kapa matshwao a kgwebo a ngodisitsweng a Arm Limited (kapa ditsiane tsa yona kapa dikhamphani tse hodisang) tsa US le/kapa dibakeng tse ding. Theknoloji e amanang le eona e ka sireletsoa ke litokelo tsa molao, litokelo tsa litokelo, meralo le liphiri tsa khoebo. Litokelo tsohle li sirelelitsoe.
EdgeLock - ke lets'oao la khoebo la NXP BV
i.MX - ke lets'oao la khoebo la NXP BV
Ka kopo hlokomela hore litsebiso tsa bohlokoa mabapi le tokomane ena le lihlahisoa tse hlalositsoeng mona, li kenyelelitsoe karolong ea 'Legal information'.
© 2023 NXP BV
Ho fumana lintlha tse ling, ka kopo etela: http://www.nxp.com
Litokelo tsohle li sirelelitsoe.
Letsatsi la ho lokolloa: 30 May 2023
ID ea litokomane: AN13951
"NXP Semiconductors"
AN13951
Ho ntlafatsa Tšebeliso ea Matla bakeng sa i.MX 8ULP
Litokomane / Lisebelisoa
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NXP AN13951 Optimizing Power Consumption for i.MX 8ULP [pdf] Bukana ea Mosebelisi AN13951, AN13951 Optimizing Power Consumption for i.MX 8ULP, Optimizing Power Consumption for i.MX 8ULP, Power Consumption for i.MX 8ULP, Consumption for i.MX 8ULP, i.MX 8ULP |
