Kusintha kwa Microsemi SmartDesign MSS GPIO
SmartFusion Microcontroller Subsystem (MSS) imapereka GPIO hard peripheral (APB_1 subbus) yokhala ndi ma GPIO 32 osinthika. Khalidwe lenileni la GPIO iliyonse (zolowera, zotuluka ndi zotulutsa zimathandizira kuwongolera zolembetsa, kusokoneza modes, etc.) zitha kufotokozedwa pamlingo wogwiritsa ntchito SmartFusion MSS GPIO Driver yoperekedwa ndi Actel. Komabe, muyenera kufotokozera ngati GPIO imalumikizidwa mwachindunji ndi pad yakunja (MSS I/O) kapena ku nsalu ya FPGA. Gawo ili la kasinthidwe kachipangizo kachitidwe kachitidwe ka MSS GPIO configurator ndipo likufotokozedwa mu chikalata ichi.
Kuti mumve zambiri za zotumphukira zolimba za MSS GPIO, chonde onani za Actel SmartFusion Microcontroller Subsystem User's Guide.
Zosankha Zolumikizana
MSS I/O Pad - Sankhani njira iyi kuti muwonetse kuti GPIO yosankhidwa idzalumikizidwa ndi pad yodzipatulira yakunja (MSS I/O). Muyenera kusankha mtundu wa buffer ya I/O - INBUF, OUTBUF, TRIBUFF ndi BIBUF - yomwe idzafotokozere momwe MSS I/O pad ikukonzedwa. Dziwani kuti njirayi singakhalepo ngati MSS I/O ikugwiritsidwa ntchito kale ndi zotumphukira zina kapena nsalu (onani gawo la MSS I/O Sharing kuti mumve zambiri)
Nsalu - Sankhani njira iyi kuti muwonetse kuti GPIO yosankhidwa idzalumikizidwa ndi nsalu ya FPGA. Muyenera kusankha ngati mukufuna kuti ma GPI (Input), GPO (Output) kapena onse a GPI ndi GPO (Input/Output) atulutsidwe kuti alumikizike kunsalu. Dziwani kuti zolembera za GPIO sizingatulutsidwe pansalu pamene chisankhochi chasankhidwa. Komanso, ma GPI olumikizidwa kunsalu amatha kusokoneza malingaliro a ogwiritsa ntchito ngati kusokoneza koyenera kutha kukhazikitsidwa moyenera ndi pulogalamu yanu (ntchito zoyambitsa dalaivala za MSS GPIO).
Kugawana kwa MSS I/O
Mu kamangidwe ka SmartFusion MSS I/Os amagawidwa pakati pa zotumphukira ziwiri za MSS kapena pakati pa zotumphukira za MSS ndi nsalu ya FPGA. Ma MSS GPIO sangathe kulumikiza ku MSS I/O inayake ngati ma I/O awa alumikizidwa kale ndi zotumphukira za MSS kapena ku nsalu ya FPGA. GPIO configurator imapereka mayankho achindunji ngati GPIO ikhoza kulumikizidwa ndi MSS I/O kapena ayi.
GPIO[31:16]
GPIO[31:16] adapangidwa m'magulu omwe akuwonetsa kuti ndi zotumphukira za MSS zomwe akugawana nazo ma MSS I/Os. Ngati chotumphukira chikugwiritsidwa ntchito (chothandizidwa pa chinsalu cha MSS), ndiye kuti menyu yotsitsa ya MSS I/O Pad imakhala imvi kwa ma GPIO omwe amagawana nawo ndipo chithunzi cha Info chikuwonetsedwa pafupi ndi menyu yotsitsa. Chizindikiro cha Info chikuwonetsa kuti njira ya MSS I / O siyingasankhidwe chifukwa idagwiritsidwa ntchito kale ndi zotumphukira za MSS kapena, kutengera phukusi lomwe lasankhidwa, osamangidwa.
Example 1
SPI_0, SPI_1, I2C_0, I2C_1, UART_0 ndi UART_1 ndiwoyatsidwa mumzere wa MSS.
- GPIO[31:16] sichitha kulumikizidwa ku MSS I/O. Zindikirani mindandanda ya imvi ndi zithunzi za Info (Chithunzi 1-1).
- GPIO[31:15] ikhoza kulumikizidwabe ndi nsalu ya FPGA. Mu example, GPIO[31] yolumikizidwa ku nsalu ngati Chotuluka ndi GPIO[30] ngati Cholowetsa.
Example 2
I2C_0 ndi I2C_1 ndizozimitsidwa mumsewu wa MSS.
- GPIO[31:30] ndi GPIO[23:22] akhoza kulumikizidwa ku MSS I/O (monga momwe tawonetsera pa Chithunzi 1-2).
- Mu example, onse a GPIO[31] ndi GPIO[30] alumikizidwa ku MSS I/O ngati madoko a Output.
- Mu example, GPIO[23] yolumikizidwa ku MSS I/O ngati doko lolowera ndipo GPIO[22] yolumikizidwa ndi MSS I/O ngati doko la Bidirectional.
- GPIO[29:24,21:16] sichitha kulumikizidwa ku MSS I/O. Zindikirani mindandanda ya imvi ndi zithunzi za Info.
- GPIO[29:24,21:16] ikhoza kulumikizidwabe ndi nsalu ya FPGA. Mu example, onse a GPIO[29] ndi GPIO[28] alumikizidwa ku nsalu ngati madoko olowera.
GPIO[15:0]
GPIO[15:0] gawani ma MSS I/Os omwe angakonzedwe kuti alumikizane ndi nsalu ya FPGA (kusintha kwamtsogoloku kutha kuchitidwa pogwiritsa ntchito MSS I/O Configurator). Ngati MSS I/O yakonzedwa kuti ilumikizane ndi nsalu ya FPGA, ndiye kuti menyu yotsitsa ya MSS I/O Pad imakhala yotuwa chifukwa cha ma GPIO omwe amagawana nawo ndipo chithunzi cha Info chimawonetsedwa pafupi ndi menyu yotsitsa. Chizindikiro cha Info chikuwonetsa kuti njira ya MSS I / O siyingasankhidwe chifukwa idagwiritsidwa ntchito kale kapena, kutengera phukusi lomwe lasankhidwa, losamangidwa.
Dziwani kuti mawu a buluu mu kasinthidwe amawunikira dzina la pini ya phukusi la MSS I/O iliyonse yolumikizidwa ndi GPIO. Izi ndizothandiza pokonzekera masanjidwe a board.
Example
Kuti muwonetse bwino momwe masinthidwe a MSS I / O ndi GPIO [15:0] masanjidwe amaphatikizidwira, Chithunzi 1-3 chikuwonetsa onse okonza mbali ndi mbali ndi makonzedwe awa:
- MSS I/O[15] imagwiritsidwa ntchito ngati doko la INBUF lolumikizidwa ndi nsalu ya FPGA. Chifukwa chake, GPIO[15] sichitha kulumikizidwa ndi MSS I/O.
- GPIO[5] yolumikizidwa ku MSS I/O ngati Zolowetsa. Chifukwa chake MSS I/O[5] singagwiritsidwe ntchito kulumikiza ku nsalu ya FPGA.
- GPIO[3] yolumikizidwa ndi nsalu ya FPGA ngati Chotuluka. Chifukwa chake MSS I/O[3] singagwiritsidwe ntchito kulumikiza ku nsalu ya FPGA.
Kufotokozera kwa Port
Table 2-1 • GPIO Port Description
| Dzina la Port | Mayendedwe | PAD? | Kufotokozera |
| GPIO_ _MWA | In | Inde | Dzina la doko la GPIO pamene GPIO[index] yakhazikitsidwa ngati MSS I/O Zolowetsa
doko |
| GPIO_ _OUT | Kutuluka | Inde | Dzina la doko la GPIO pamene GPIO[index] yakhazikitsidwa ngati MSS I/O Zotulutsa
doko |
| GPIO_ _TRI | Kutuluka | Inde | Dzina la doko la GPIO pamene GPIO[index] yakhazikitsidwa ngati MSS I/O
Tristate doko |
| GPIO_ _BI | Inu | Inde | Dzina la doko la GPIO pamene GPIO[index] yakhazikitsidwa ngati MSS I/O Bidirectional doko |
| F2M_GPI_ | In | Ayi | Dzina la doko la GPIO pamene GPIO[index] yakonzedwa kuti igwirizane ndi nsalu ya FPGA ngati Zolowetsa doko (F2M ikuwonetsa kuti chizindikirocho chikuchokera pansalu kupita ku MSS) |
| M2F_GPO_ | In | Ayi | Dzina la doko la GPIO pamene GPIO[index] yakonzedwa kuti igwirizane ndi nsalu ya FPGA ngati Zotulutsa doko (M2F ikuwonetsa kuti chizindikirocho chimachokera ku MSS kupita ku nsalu) |
Zindikirani:
- Madoko a PAD amakwezedwa okha pamwamba pamakonzedwe onse.
- Madoko omwe si a PAD akuyenera kukwezedwa pamanja mpaka pamlingo wapamwamba kuchokera pazithunzi za MSS configurator kuti zipezeke ngati gawo lotsatira lautsogoleri.
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Kusintha kwa Microsemi SmartDesign MSS GPIO [pdf] Buku Logwiritsa Ntchito SmartDesign MSS GPIO, Configuration, SmartDesign MSS GPIO Configuration, SmartDesign MSS |
