JAJSON9 May 2022 DP83TC813R-Q1 , DP83TC813S-Q1
PRODUCTION DATA
xMII Loopback is the shallowest loop through the PHY. It is a useful test mode to validate communications between the MAC and the PHY. When in xMII Loopback, data transmitted from a connected MAC on the TX path is internally looped back in the DP83TC813 to the RX pins where it can be checked by the MAC. There is no link indication when in xMII loopback.
Write register 0x0000 = 0x6100
Data will be generated externally on the MAC TX pins.
Use the following register settings to enable checker depending on the MAC interface mode.
Data can be verified at MAC interface RX pins.
Data can also be checked internally by reading registers 0x063C, 0x063D, 0x063E
Not applicable as data will be generated externally on the MAC interface TX pins.
Not applicable as PRBS stream checker works with only internal PRBS generator.
Generated data will be going to cable side.