SmartDesign MSS
Cortex™ -M3 Configuration
User Guide
Introduction
The SmartFusion Microcontroller Subsystem (MSS) contains an ARM Cortex-M3 microcontroller, a lowpower processor that features low gate count, low and predictable interrupt latency, and low-cost debug. It is intended for deeply embedded applications that require fast interrupt response features.
This document describes the ports that are available on the Cortex-M3 core in the SmartDesign MSS Configurator.
For more information about the specific implementation of the Cortex-M3 in the Actel SmartFusion device, please refer to the Actel SmartFusion Microcontroller Subsystem User’s Guide.
Configuration Options
There are no configuration options for the Cortex-M3 core in the SmartDesign MSS Configurator.
Port Description
| Port Name | Direction | PAD? | Description |
| RXEV | In | No | Causes the Cortex-M3 to wake up from a WFE ( wait for event ) instruction. The event input, RXEV, is registered even when not waiting for an event, and so affects the next WFE. |
| TXEV | Out | No | Event transmitted as a result of a Cortex-M3 SEV ( send event ) instruction. This is a single-cycle pulse equal to 1 FCLK period. |
| SLEEP | Out | No | This signal is asserted when the Cortex-M3 is in sleep now or sleep-on-exit mode, and indicates that the clock to the processor can be stopped. |
| DEEPSLEEP | Out | No | This signal is asserted when the Cortex-M3 is in sleep now or sleep-on-exit mode when the SLEEPDEEP bit of the System Control Register is set. |
Note:
Non-PAD ports must be promoted manually to the top level from the MSS configurator canvas to be available as the next level of hierarchy.
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Documents / Resources
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Actel SmartDesign MSS Cortex M3 Configuration [pdf] User Guide SmartDesign MSS Cortex M3 Configuration, SmartDesign MSS, Cortex M3 Configuration, M3 Configuration |
