GS1582-IBE3 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

GS1582-IBE3

Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner™

Semtech Corporation 

4. Detailed Description

4.1 Functional Overview

The GS1582 is a multi-rate serializer with an integrated cable driver and embedded

audio multiplexer. When used in conjunction with the external GO1555 Voltage

Controlled Oscillator, a transmit solution at 1.485Gb/s, 1.485/1.001Gb/s or 270Mb/s is

realized.

The device has three basic modes of operation that must be set through external device

pins; SMPTE mode, DVB-ASI mode, and Data-Through mode.

In SMPTE mode, the device will accept 10-bit multiplexed or 20-bit demultiplexed

SMPTE compliant data at both HD and SD signal rates. By default, the device’s additional

processing features, including audio embedding, will be enabled in this mode.

In DVB-ASI mode, the GS1582 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 Standby mode, the device power consumption will be reduced.

The serial digital output features a high impedance mode and adjustable signal swing.

The output slew rate is automatically set by the SD/HD pin setting.

GS1582 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 IO

processing pin, but may be individually disabled via internal registers accessible

through the GSPI host interface.

Finally, the GS1582 contains a JTAG interface for boundary scan test implementations.

4.2 Parallel Data Inputs

Data is clocked into the device on the rising edge of PCLK as shown in Figure 4-1.

The input data format is defined by the setting of the external SD/HD, SMPTE_BYPASS,

and DVB_ASI pins and may be presented in 10-bit or 20-bit format. The input data bus

width is controlled by the 20bit/10bit input pin.

GS1582 Multi-Rate Serializer with Cable Driver, Audio

Multiplexer and ClockCleanerTM

Data Sheet

40117 - 4

December 2011

26 of 115

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