Revision History
Version
ECR
Date
Changes and / or Modifications
Ability to propagate loss of lock to Ch0FAULT pin
was added.
0
157889
March 2012
Converted document to a Data Sheet. Updates
throughout. Removed typical temperature
monitor accuracy. Removed typical voltage
monitor accuracy. Added AC common-mode
channel characteristics. Added register 101 bits
[5:3] to Table 7-1: Configuration and Status
Register Map.
November
2011
C
157185
Correction to pin 21 and 23 in Table 1-1: Pin
Descriptions.
B
155955
155765
March 2011
A
February 2011
New document.
Contents
Key Features........................................................................................................................................................1
Applications.........................................................................................................................................................1
Description...........................................................................................................................................................1
1. Pin Out...............................................................................................................................................................5
1.1 Pin Assignment ..................................................................................................................................5
1.2 Pin Descriptions ................................................................................................................................6
2. Electrical Characteristics ............................................................................................................................8
2.1 Absolute Maximum Ratings ..........................................................................................................8
2.2 DC Electrical Characteristics ........................................................................................................8
2.2.1 Power Features......................................................................................................................9
2.3 AC Electrical Characteristics ..................................................................................................... 10
2.4 Required Initialization Settings ................................................................................................ 12
3. Detailed Description.................................................................................................................................. 13
3.1 Multirate CDR Functionality ...................................................................................................... 13
3.1.1 Rate Selection and Rate Detection............................................................................... 13
3.1.2 Auto Retimer Bypass ........................................................................................................ 16
3.2 Channel 0 Path (Ch0) .................................................................................................................... 17
3.2.1 Ch0 Equalization................................................................................................................ 17
3.2.2 Ch0 PLL Variable Loop Bandwidth.............................................................................. 18
3.2.3 Channel 0 Output Polarity Invert................................................................................. 18
3.3 Channel 1 Path (Ch1) .................................................................................................................... 19
3.3.1 Integrated Limiting Amplifier ....................................................................................... 19
3.3.2 Ch1 Equalization................................................................................................................ 19
3.3.3 Ch1 PLL Variable Loop Bandwidth.............................................................................. 20
GX4002 2x2 14.025Gb/s Crosspoint Switch with Trace
Equalization and Output De-Emphasis
Data Sheet
3 of 74
Proprietary & Confidential
55972 - 0
March 2012
GENNUM [ GENNUM CORPORATION ]
