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DP83640 Append RX Timestamp



I'm having a bit of difficulty setting up the PHY to append RX timestamps at the end of received PTP event messages.

I'm setting the following flags:

RXCFG3:
 TS_APPEND
 TS_INSERT

RXCFG4:
 TS_SEC_EN
 TS_SEC_LEN = 0x3
 RXTS_NS_OFF = 0x0
 RXTS_SEC_OFF = 0x0

I'm assuming sync bytes (48 downto 45) will be seconds and (52 downto 49) will be ns, but they appear to be garbage...

Tx,

Brad