AM623: Switch Ethernet RGMII mode to RMII mode

Koichiro Tashiro

Part Number: AM623
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi,

My customer wants to evaluate CPSW RMII mode.
Currently, he is able to use RGMII mode and want to know how to change it to RMII by minimum register changes.
According TRM, there are ENET1_CTRL(table 14-3467) and ENET2_CTRL(Table 14-3469).
And bit[2:1] are used for mode selection.
010b => RGMII
001b=> RMII

The customer should change these bits to 001b and PINMUX for RMII?
Are there any other configurations should be changed? Of course PINMUX is changed to use RMII.

Thanks and regards,
Koichiro Tashiro

6 months ago

0 Ashwani Goel 6 months ago

TI__Mastermind 25530 points

Hi Koichiro Tashiro,

Thanks for your query.

Koichiro Tashiro said:
The customer should change these bits to 001b and PINMUX for RMII?
Are there any other configurations should be changed? Of course PINMUX is changed to use RMII.

I will check on this and get back to you.

RMII interface has "Internal Clock Source" or "(External Clock Source" mentioned here ?