Tool/software:
I have a question concerning the TI System Configuration Tool. When I select my peripherals to generate the pinmux settings, there is a "Rx" option for each pin. What does that option represent?
Here is a screenshot to illustrate what I'm talking about:
For the GPMC, all the pins should be bidirectional. Should it not be configured as RX?
Thanks!
Hello Eden,
For the GPMC, all the pins should be bidirectional. Should it not be configured as RX?
Actually, for the GPMC NAND interface, AD0 to AD7 lines are only data lines and all are input to SOC.
And there are no address line concept for NAND memories, and it is just command and read based-methodology for NAND memories.
For example, we need to read data one page approximately 4KB and the page size will be different based on vendor.
Now, from the SOC side, we need to send an address command which includes some of the row and column selections and after that NAND devices will send data to SOC.
This is how NAND memory works . In this method, all data lines are input to SOC. So, it enabled RX.
When you enable RX - >, Pin should be configured as input.
If you look at the datasheet of AM64X for GPMC_ADO pin, and it supports both Input and output.
But in NAND device interface type, it can be used only as input and that's reason it was configured as RX mode.
Regards,
Anil.
