GS3140 Datasheet, PDF (3/40 Pages) Semtech Corporation – Multi-Rate Adaptive 3G SDI Equalizer

Revision History
Version
1
0
ECO
025657
024058
PCN
—
—
Date
May 2015
January 2015
Changes and/or Modifications
Converted document from Draft Data Sheet to Final Data Sheet.
New Document.
Contents
1. Pin Out.................................................................................................................................................................5
1.1 GS3140 Pin Assignment ...................................................................................................................5
1.2 GS3140 Pin Descriptions ..................................................................................................................5
2. Electrical Characteristics................................................................................................................................7
2.1 Absolute Maximum Ratings ...........................................................................................................7
2.2 DC Electrical Characteristics ...........................................................................................................7
2.3 AC Electrical Characteristics ............................................................................................................9
3. Input/Output Circuits.................................................................................................................................. 11
4. Detailed Description.................................................................................................................................... 12
4.1 Serial Digital Inputs (SDI/SDI) ...................................................................................................... 12
4.1.1 Upstream Launch Swing Compensation.................................................................... 12
4.2 Automatic (Adaptive) Cable Equalization .............................................................................. 12
4.3 Cable Length Indication ................................................................................................................ 13
4.4 Programmable Squelch Threshold ........................................................................................... 13
4.5 Loss of Signal (LOS) ......................................................................................................................... 14
4.5.1 Programmable LOS Filter ................................................................................................. 14
4.6 Rate Detection .................................................................................................................................. 15
4.7 Interrupt (INT)/ Status Output .................................................................................................... 15
4.8 Power Modes .................................................................................................................................... 15
4.8.1 Bypass...................................................................................................................................... 15
4.8.2 Sleep......................................................................................................................................... 15
4.8.3 Mute ......................................................................................................................................... 16
4.8.4 Sleep-Mute............................................................................................................................. 16
4.8.5 Output Disable ..................................................................................................................... 16
4.9 Serial Digital Output (DDO/DDO) .............................................................................................. 16
4.9.1 Adjustable Output Swing and De-Emphasis............................................................. 17
4.9.2 Output Common Mode Voltage.................................................................................... 18
4.10 Device Reset .................................................................................................................................... 19
4.11 Gennum Serial Peripheral Interface (GSPI) .......................................................................... 19
4.11.1 CS Pin..................................................................................................................................... 19
4.11.2 SDIN Pin................................................................................................................................ 20
4.11.3 SDOUT Pin ........................................................................................................................... 20
4.11.4 SCLK Pin................................................................................................................................ 22
4.11.5 Command Word Description........................................................................................ 22
GS3140
Final Data Sheet
PDS-060939
Rev.1
May 2015
www.semtech.com
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