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GX4002 Datasheet, PDF (68/74 Pages) Gennum Corporation – Dynamic on-chip power management control
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Table 7-1: Configuration and Status Register Map (Continued)
Register Name
CH1RDET_REG2
RSVD
RSVD
RSVD
CH1SDO_REG1
Register
Addressd
Parameter Name
CH1RATEDETRATEPER
73
RSVD
74
RSVD
75
RSVD
76
RSVD
CH1SDOSWING*
77
CH1SDOSWING
CH1SDO_REG2
CH1SDOPERTCTRL*
78
CH1SDOPECTRL*
RSVD
CH1SDOPERTCTRL
Bit
Position
Access
3:0
RW
7:4
RW
7:0
RW
7:0
RW
7:0
RW
3:0
RW
7:4
RW
1:0
RW
4:2
RW
7:5
RW
1:0
RW
CH1SDO_REG3
CH1SDOPECTRL
79
CH1SDOMUTE
4:2
RW
5:5
RW
CH1SDOAUTOMUTEEN
6:6
RW
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
CH1SDOPWRDNONMUTE
80
RSVD
81
RSVD
82
RSVD
83
RSVD
84
RSVD
85
RSVD
86
RSVD
87
RSVD
88
RSVD
7:7
RW
7:0
RW
7:0
RW
7:0
RW
7:0
RW
70
RW
7:5
RW
7:0
RW
7:0
RW
7:0
RW
SDO0_REG10
89
CH0SWINGSETLO
7:0
RW
NOTE: * Indicates bits for lower data rates (below 10G operation)
Reset Valueb
1000
0000
00000000
00000000
00000000
1010
1010
00
000
000
00
000
0
1
1
0000000
0000000
00000000
00000100
00000010
00000100
10000010
00101111
01010000
00000000
Valid
Ranged
Function
0-15
0-15
0-255
0-255
0-255
0-15
0-15
0-3
0-7
0-7
0-3
0-31
0-1
0-1
0-1
0-255
0-255
0-255
0-255
0-255
0-255
0-255
0-255
0-255
0-255
Rate detector rate period (0.3µs to 13ms, 100µs
default).
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Driver swing.
0-15: 100-850mVppd, default=10: 600mV.
Valid for below 10G operation.
Driver swing.
0-15: 100-850mVppd, default=10: 600mV.
Valid for 10G to 14G operation.
Rise time control.
0:18ps, 1 & 2:22ps, 3: 30ps for 450mVppd
swing. Valid for below 10G operation.
Pre-emphasis amplitude.
0: 1.3dB, 7: 6dB for 450mVppd swing.
Valid for below 10G operation.
Reserved. Do not change.
Rise time control.
0:18ps, 1 & 2:22ps, 3: 30ps for 450mVppd
swing.
Valid for 10G to 14G operation.
Pre-emphasis amplitude.
0: 1.3dB, 7: 6dB for 450mVppd swing.
Valid for 10G to 14G operation.
When HIGH, mutes driver and maintains
common mode when not in auto mute mode.
When HIGH, enables muting the driver upon
LOS.
When HIGH, enables power-down on mute for
output stage.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Reserved. Do not change.
Ch0 swing setting LSB. 0x0 = 0mVppd, 0xC8 =
400mVppd, 0x190 = 800mVppd swing.
Valid for below 10G operation.
GX4002 2x2 14.025Gb/s Crosspoint Switch with Trace
Equalization and Output De-Emphasis
Data Sheet
55972 - 0
March 2012
68 of 74
Proprietary & Confidential
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