Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN
Hello TI’ers,
We are working with the TMS570LC4357 and trying to configure ECLK pins for GPIO functionality.
Our requirement is:
- Use ECLK2 as a digital output (GIO)
- Use ECLK1 as a digital input
However, we are facing an issue where:
- ECLK1 can be configured and used as a digital output successfully
- ECLK2 is not toggling (not getting set/reset)
Below is the configuration we are using:
systemREG1->SYSPC1 = 0U; // GIO mode
systemREG1->SYSPC2 = 3U; // Configure ECLK1 and ECLK2 as output
systemREG1->SYSPC3 = 0U; // Initial value = 0
systemREG1->SYSPC5 = 3U; // Set high
systemREG1->SYSPC6 = 3U; // Set low
Observations:
- ECLK1 behaves as expected when configured as output
- ECLK2 does not respond to set/reset operations
Could you please help with:
- Whether ECLK2 can be reliably used as a GIO output?
- Any additional register configuration required for ECLK2?
- If there are any pin multiplexing or hardware limitations specific to ECLK2?
Thanks in advance for your support.




