Advance Product Information
Subject to Change
VSC7111 Datasheet
Registers
3.4.6
Global Output PE 1
This register configures the pre-emphasis amp 1 (PE 1) value and decay time constant
for all outputs.
Table 31.
Register 56’h: Global Output PE 1
Bit Name
Access Description
Default
00
7:6 Unused
5:3 GPE1LEVEL
R
Unused
R/W
Global PE 1 level
111: Maximum PE
…
000
001: Minimum PE
000: PE Off
2:0 GPE1DECAY
R/W
Global PE 1 decay time constant
111: Slowest decay
…
000
000: Fastest decay
3.4.7
Global Output PE 2
This register configures the pre-emphasis amp 2 (PE 2) value and decay time constant
for all outputs.
Table 32.
Register 57’h: Global Output PE 2
Bit Name
Access Description
Default
00
7:6 Unused
5:3 GPE2LEVEL
R
Unused
R/W
Global PE 2 level
111: Maximum PE
…
000
001: Minimum PE
000: PE Off
2:0 GPE2DECAY
R/W
Global PE 2 decay time constant
111: Slowest decay
…
000
000: Fastest decay
3.4.8
Global Output Level
This register sets the output power level (peak-to-peak differential voltage) for all
outputs.
Table 33.
Register 58’h: Global Output Level
Bit Name
GODPWR_OVRD
Access Description
R/W Allow GODHIGHPOWER to control output driver
Default
7
0
power/bandwidth
1: GODHIGHPOWER register controls the output
driver bandwidth/power
0: LOWPWR pin controls the output driver
bandwidth/power
Revision 2.0
September 2010
Confidential
Page 37
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
