GX4002 Datasheet, PDF (25/74 Pages) Gennum Corporation – Dynamic on-chip power management control

SDO0
SDI1
Recovered
Clock
HEye Monitor
Ch0 CDR (10G/14G)
Retimed
Data
Input
Data
Peak
Detector
VEye
Monitor
Ch0 EQ
0
1
Ch0 Driver
Peak
Detector
VEye
Monitor
Ch1 LA
0
LBCH0OUTEN = 1
1
0
0
1
1
CH0PLLPOLINV
LBCH0OUTCH1DATA = 1
Ch0Clk
PRBS 7
PRBS 7
Generator Checker
Ch1Clk
1
0
LBCH1INEN = 0
1
0 _{CH1PLLBYPASS = 1 (Mode 1)}
CH1PLLBYPASS = 0 (Mode 2)
1
0
0
Ch1 Driver
1
SDO1
Input
Data
Retimed
Data
Ch1 CDR (10G/14G)
HEye Monitor
Recovered
Clock
Mode 1: SDI1 => LA => LD => SDO0
Mode 2: SDI1 => LA => Ch1 CDR => LD => SDO0
Standard data path:
can be enabled in crosspoint mode
SDI0
Figure 3-6: Crosspoint Modes 1 & 2
Recovered
Clock
HEye Monitor
Ch0 CDR (10G/14G)
Retimed
Data
Input
Data
LBCH0INEN = 1
0
1
Peak
Detector
VEye
Monitor
Ch0 EQ
SDI0
SDO0
SDI1
Ch0 Driver
Peak
Detector
VEye
Monitor
Ch1 LA
LBCH0OUTEN = 0
0
0
1
1
CHPLLPOLINV
0
CH0PLLBYPASS = 0 1
Ch0Clk
PRBS 7
Generator
PRBS 7
Checker
Ch1Clk
LBCH0INCH1DATA = 1
1
0 _{CH1PLLBYPASS = 1 (Mode 3)}
CH1PLLBYPASS = 0 (Mode 4)
1
0
LBCH1INEN = 0
Input
Data
Retimed
Data
Ch1 CDR (10G/14G)
HEye Monitor
Recovered
Clock
1
0
Ch1 Driver
SDO1
0
1
Mode 3: SDI1 => LA => Ch0 CDR => LD => SDO0
Mode 4: SDI1 => LA => Ch1 CDR => Ch0 CDR => LD => SDO0
Standard data path:
can be enabled in crosspoint mode
Figure 3-7: Crosspoint Modes 3 & 4
GX4002 2x2 14.025Gb/s Crosspoint Switch with Trace
Equalization and Output De-Emphasis
Data Sheet
55972 - 0
March 2012
25 of 74
Proprietary & Confidential