QT2022/32 - Data Sheet: DS3051
Bit
PMA Vendor Specific 1.C001h
0
1
2
txlock, RO
1=Fiber transmit PLL in lock
sync_err, RO/LH
1=recovered clock rate error
TXPLLOUT Output Frequency Select
This pin reverses the sense of the XFP input for determining TXPLLOUT frequency. See Table 8 on page 35.
0 = normal (default)
1 = reversed.
3
4
TXPLLOUT Output Enable
In conjunction with 1.C001h.7, enables or disables the TXPLLOUT output driver. See Table 7 on page 35.
PMA network loopback mode, RW
0=disable network loopback (default)
1=enable network loopback
5
PMA Network Loopback Data Override, RW
1= Transmit Data (default)
0= Transmit Idles
130
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