Hello, TI Experts,
We have a question about "RX-check-box" of PINMUX-TOOL for AM335x.
We found related E2E thread as below.
http://e2e.ti.com/support/arm/sitara_arm/f/791/t/515012
http://e2e.ti.com/support/arm/sitara_arm/f/791/t/383189
From this E2E thread, our understanding is as follows;
- The RXACTIVE bit is just an enable pin to the input buffer.(It is NOT for direction control.)
- Rx-check-box is the Input Enable value for the PAD (RXACTIVE bit).
- For INPUT-pin, the input buffer should be enabled by checking Rx-check-box.
- For INOUT-pin, the input buffer should be enabled by checking Rx-check-box.
- For OUTPUT-pin, enabling the input buffer is not mandatory,
unless specific instructions are given from the datasheet or guidelines like below.
http://processors.wiki.ti.com/index.php/AM335x_Schematic_Checklist#MMC
- Even if Rx-check-box is checked, the output pin function works properly.
- Rx-check-box is recommended to be un-checked for leakage point of view in general.
Is this understanding correct?
Best regards
