GS2962 Datasheet, PDF (26/82 Pages) Gennum Corporation – Integrated Narrow-Bandwidth PLL

4. Detailed Description
4.1 Functional Overview
The GS2962 is a multi-rate Transmitter with integrated SMPTE digital video processing
and an integrated Cable Driver. It provides a complete transmit solution at 2.970Gb/s,
2.970/1.001Gb/s, 1.485Gb/s, 1.485/1.001Gb/s or 270Mb/s.
The device has four basic modes of operation that must be set through external device
pins: SMPTE mode, DVB-ASI mode, Data-Through mode and Standby mode.
In SMPTE mode, the device will accept 10-bit multiplexed or 20-bit demultiplexed
SMPTE compliant data. By default, the device's additional processing features will be
enabled in this mode.
In DVB-ASI mode, the GS2962 will accept an 8-bit parallel DVB-ASI compliant transport
stream on DIN[17:10]. The serial output data stream will be 8b/10b encoded with
stuffing characters added as per the standard.
Data-Through mode allows for the serializing of data not conforming to SMPTE or
DVB-ASI streams. No additional processing will be done in this mode.
In addition, the device may be put into Standby, to reduce power consumption.
The serial digital output features a high-impedance mode and adjustable signal swing.
The output slew rate is automatically set by the RATE_SEL0 and RATE_SEL1 pin setting.
The GS2962 provides several data processing functions; including generic ANC
insertion, SMPTE 352M and EDH data packet generation and insertion, automatic video
standards detection, and TRS, CRC, ANC data checksum, and line number calculation
and insertion. These features are all enabled/disabled collectively using the external I/O
processing pin, but may be individually disabled via internal registers accessible
through the GSPI host interface.
Finally, the GS2962 contains a JTAG interface for boundary scan test implementations.
GS2962 3G/HD/SD-SDI Serializer with Complete
SMPTE Video Support
Data Sheet
48005 - 7
October 2010
26 of 82