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 

1728 Total Horizontal Clocks per line

Data

Enable

288

1440 Clocks for Active Video

24 126 138 clocks

HSYNC

Field 1: 24 Vertical Blanking Lines

Data

Enable

24

HSYNC

1728 clocks

623 624 625 1 2 3 4 5 6 7

VSYNC

288 Active Vertical Lines per field

264

22 23

310 311 312

Field 2: 25 Vertical Blanking Lines

Data

Enable

1728 clocks

864

HSYNC

310 311 312 313 314 315 316 317 318 319 320

VSYNC

288 Active Vertical Lines per field

264

335 336

623 624 625

Figure 4-8: HSYNC:VSYNC:DE Input Timing 720 (1440) x 576 @ 50

4.4 DVB-ASI mode

The GS1582 operates in DVB-ASI mode when the SMPTE_BYPASS pin is set LOW and

the DVB_ASI and SD/HD pins are set HIGH.

In this mode, all SMPTE processing functions are disabled, and the 8-bit transport stream

data will be 8b/10b encoded prior to serialization.

4.4.1 Control Signal Inputs

In DVB-ASI mode, the DIN19 and DIN18 pins are configured as DVB-ASI control signals

INSSYNCIN and KIN respectively.

When INSSYNCIN is set HIGH, the device will insert K28.5 sync characters into the data

stream. This function is used in system implementations where the GS1582 is preceded

by an external data FIFO. Parallel DVB-ASI data may be clocked into the FIFO at some

rate less than 27MHz. The INSSYNCIN input may then be connected to the FIFO empty

signal, providing a means of padding the data transmission rate to 27MHz. See

Figure 4-9.

GS1582 Multi-Rate Serializer with Cable Driver, Audio

Multiplexer and ClockCleanerTM

Data Sheet

40117 - 4

December 2011

35 of 115

Share Link: