Semtech GS3241
The GS3241 is a low-power, multi-rate re-timing Cable Equalizer supporting rates up to 3G HD-SDI. It is designed to equalize and restore signals received over 200m coaxial cable at 3G, compensate for DC content of SMPTE pathological signals, and re-time the incoming data. The device supports ST 424 (3G SDI), ST 292-1 (HD-SDI), and ST 259 (SD-SDI) signals and is optimized for performance at 2.97Gb/s. In addition to standard SMPTE rates, the device also supports re-timing of DVB-ASI at 270Mb/s and MADI at 125Mb/s.
The two trace drivers have highly configurable pre-emphasis and swing controls to compensate for long trace and connector losses.
Overview
Features
- 75Ω cable input interface with on-chip termination
- SMPTE ST 424, ST 292-1 and ST 259 compliant input/output
- Multi-standard operation from 1Mb/s to 2.97Gb/s
- In addition to standard SMPTE rates, the device also supports re-timing of DVB-ASI at 270Mb/s, and MADI at 125Mb/s
- 3D Input Signal Eye Monitor
- PRBS generator and checker
- Automatic cable equalization—typical equalized cable lengths of Belden 1694A cable:
- 190m at 2.97Gb/s
- 260m at 1.485Gb/s
- 450m at 270Mb/s and 125Mb/s
Cable equalizer features:
- Automatic power down on loss of signal
- Programmable carrier detect with squelch threshold adjustment
- Programmable launch swing compensation for non-compliant source
- Manual and automatic cable equalizer bypass
Trace driver features:
- Integrated 100Ω, differential output termination
- E×tends output DC-coupling support with 1.2V to 2.5V output supply range
- Trace driver data output pre-emphasis to compensate for up to 60” FR4 at 2.97Gb/s
- Manual or automatic re-timer bypass
- Manual or automatic mute or disable on LOS
CDR features:
- Manual or automatic rate modes
- Wide Loop bandwidth control
- Re-timing at the following data rates: 125Mb/s, 270Mb/s, 1.485Gb/s, and 2.97Gb/s—this includes the f/1.001 rates
Additional Features:
- Single 1.8V power supply for analog and digital core
- GSPI serial control and monitoring interface
- Four configurable GPIO pins for control or status monitoring
- Wide operating temperature range: -40°C to +85°C
- Small 6mm × 4mm 40-pin QFN
- Pb-free/Halogen-free/RoHS and WEEE compliant package
- Pin compatible with the GS12141, GS12142, and GS12241
Applications
- 190m at 2.97Gb/s
- 260m at 1.485Gb/s
- 450m at 270Mb/s and 125Mb/s
Cable equalizer features:
- Automatic power down on loss of signal
- Programmable carrier detect with squelch threshold adjustment
- Programmable launch swing compensation for non-compliant source
- Manual and automatic cable equalizer bypass
Trace driver features:
- Integrated 100Ω, differential output termination
- E×tends output DC-coupling support with 1.2V to 2.5V output supply range
- Trace driver data output pre-emphasis to compensate for up to 60” FR4 at 2.97Gb/s
- Manual or automatic re-timer bypass
- Manual or automatic mute or disable on LOS
CDR features:
- Manual or automatic rate modes
- Wide Loop bandwidth control
- Re-timing at the following data rates: 125Mb/s, 270Mb/s, 1.485Gb/s, and 2.97Gb/s—this includes the f/1.001 rates
Additional Features:
- Single 1.8V power supply for analog and digital core
- GSPI serial control and monitoring interface
- Four configurable GPIO pins for control or status monitoring
- Wide operating temperature range: -40°C to +85°C
- Small 6mm × 4mm 40-pin QFN
- Pb-free/Halogen-free/RoHS and WEEE compliant package
- Pin compatible with the GS12141, GS12142, and GS12241
SMPTE ST 424, SMPTE ST 292, SMPTE ST 259 and AES10 coaxial cable serial digital interfaces.
Diagrams and Specs
Datasheets and Resources
Datasheets
Technical Notes
- Configuration Loading Procedure
- GS3241 Reliability Qualification Report
- IPC1752-2, Class 6 for: GS3241