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5.10
SPI
The conga-SA7 offers two SPI interfaces:
•
an eSPI for general purpose SPI devices
•
SPI0 for on-module or carrier board flash device
Note
SPI0 can optionally be rerouted for general purpose SPI devices (assembly option).
5.11
I2C
The conga-SA7 offers two I2C interfaces:
•
general purpose I2C
•
power management I2C
These interfaces are implemented through the congatec board controller and accessed through the congatec CGOS driver and API. The
controller provides a fast-mode multi-master I2C bus that has maximum I2C bandwidth.
5.12
Power Control
The conga-SA7 operates only with 5 V input voltage. Its power-up sequence is described below:
1. The 5 V input voltage (VDD_IN) supplied to the carrier board powers the conga-SA7.
2. The conga-SA7 enables its power circuits if the VIN_PWR_BAD# signal is high.
3. Depending on the carrier board design and configuration, the conga-SA7 detects a power button event (PWRBTN#) if implemented.
4. The conga-SA7 enables the carrier board power by asserting CARRIER_PWR_ON (SUS_S5#) and CARRIER_STBY# (SUS_S3#).
5. The conga-SA7 releases the RESET_OUT# and starts the boot process.
