Using TSECx SerDes as a SGMII and ECx pins as GPIO in LS1021A

[senoghte]

Hi eyery body
Can I use eTSEC1 or eTSEC2  in SGMII mode beside of using Ethernet Controller Pins that including EC1_GTX_CLK ,
EC1_TX_CLK, EC1_GTX_CLK125 ,EC1_RX_ER, EC1_RXD[0:3] and EC1_TXD[0:3]  as GPIO at the same time?
Regards

[alexander_yakov]

Please look LS1021A Reference Manual, Table 3-1.

For example, pin "EC1_GTX_CLK" alternate functions are:

GPIO3_07
EC1_TX_CLK
SAI2_TX_BCLK
FTM1_EXTCLK

That is - pin EC1_GTX_CLK can be configured as GPIO. This configuration can be done via RCW, please look Table 4-14, fields "EC1", "EC2", "EC3". Note - all pins, listed in one field, can be configured only simultaneously.

The same for other pins in your list.

Have a great day,
Alexander
TIC

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