QT2022/32 - Data Sheet: DS3051
13.1 PMA/PMD Internal Control Registers (Device 1)
Bit
PMA/PMD Control 1 Register 1.0
0
PMA Loop Back, RW
0 = Disable PMA Loopback, default
1 = Enable PMA Loopback
1
2
Reserved, RO
Speed Selection, RO
0 = operation at 10 Gb/s
3
4
5
6
Speed Selection, RO
0 = operation at 10 Gb/s
Speed Selection, RO
0 = operation at 10 Gb/s
Speed Selection, RO
0 = operation at 10 Gb/s
Speed Selection, RO
1 = operation at 10 Gb/s and above
7:10
11
Reserved, RO
Low power mode, RW
0 = Normal operation, default
1 = low power mode.
PMA power down enabled will power down the whole device with the exception of MDIO access. A reset must be applied to
exit power down mode.
12
13
Reserved, RO
Speed Selection, RO
1 = operation at 10 Gb/s and above
14
15
Reserved, RO
PMA/PMD Reset, R/W, SC
0 = Normal operation, default
1 = Reset PMA circuits
118
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