GX4002 Datasheet, PDF (26/74 Pages) Gennum Corporation – Dynamic on-chip power management control

Recovered
Clock
HEye Monitor
Ch0 CDR (10G/14G)
Retimed
Data
Input
Data
LBCH0INEN = 0
0
1
Peak
Detector
VEye
Monitor
Ch0 EQ
SDI0
SDO0
0
0
Ch0 Driver
1
1
Peak
Detector
VEye
Monitor
SDI1
Ch1 LA
1
0
0
CH0PLLBYPASS = 1 (MODE 5)
1
CH0PLLBYPASS = 0 (MODE 6)
Ch0Clk
PRBS 7
Generator
PRBS 7
Checker
Ch1Clk
1
0
Input
Data
Retimed
Data
Ch1 CDR (10G/14G)
HEye Monitor
Recovered
Clock
LBCH1OUTCH0DATA = 1
CH1PLLPOLINV
1
0
1 ^{Ch1 Driver}
0
LBCH1OUTEN = 1
SDO1
Mode 5: SDI0 => EQ => DR => SDO1
Mode 6: SDI0 => EQ => Ch0 CDR => DR => SDO1
Standard data path:
can be enabled in crosspoint mode
Figure 3-8: Crosspoint Modes 5 & 6
Recovered
Clock
HEye Monitor
Ch0 CDR (10G/14G)
Retimed
Data
Input
Data
LBCH0INEN = 0
0
1
Peak
Detector
VEye
Monitor
Ch0 EQ
SDI0
SDO0
Ch0 Driver
0
1
0
1
SDI1
Peak
Detector
VEye
Monitor
LBCH1INCH0DATA = 1
Ch1 LA
1
0
LBCH1INEN = 1
0
CH0PLLBYPASS = 1 (MODE 7) 1
CH0PLLBYPASS = 0 (MODE 8)
Ch0 Clk
PRBS 7
Generator
PRBS 7
Checker
Ch1 Clk
1
0 _{CH1PLLBYPASS = 0}
Input
Data
Retimed
Data
Ch1 CDR (10G/14G)
HEye Monitor
Recovered
Clock
CH1PLLPOLINV
1
0
1
0
LBCH1OUTEN = 0
Ch1 Driver
SDO1
Mode 7: SDI0 => EQ => Ch1 CDR => DR => SDO1
Mode 8: SDI0 => EQ => Ch0 CDR = > Ch1 CDR => DR => SDO1
Standard data path:
can be enabled in crosspoint mode
Figure 3-9: Crosspoint Modes 7 & 8
GX4002 2x2 14.025Gb/s Crosspoint Switch with Trace
Equalization and Output De-Emphasis
Data Sheet
55972 - 0
March 2012
26 of 74
Proprietary & Confidential