GS3471 datasheet(103/179 Pages) SEMTECH

Part #	GS3471

Description	3G, HD, SD SDI Receiver, with Integrated Adaptive Cable Equalizer

PDF	179 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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103 / 179 page

GS3471

Final Data Sheet Rev.4

PDS-060498

September 2017

103 of 179

Semtech

www.semtech.com

4.23 JTAG Test Operation

When the JTAG_EN/DIS pin of the GS3471 is set HIGH, test mode is enabled.

The JTAG can be used as a stand-alone in-circuit ATE (Automatic Test Equipment) during

PCB assembly.

When the JTAG tests are applied by ATE, care must be taken to disable any other devices

driving the digital I/O pins. If the tests are to be applied only at ATE, this can be

accomplished with tri-state buffers used in conjunction with the JTAG_EN/DIS input

signal. This is shown in Figure .

Scan coverage is limited to digital pins only. There is no scan coverage for analog pins

DDO/DDO, RBIAS, LF, CT0, and CT1.

The JTAG_EN/DIS pin must be held LOW during scan and therefore has no scan

coverage.

Please contact your Semtech representative to obtain the BSDL model for the GS3471.

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GS3471 Datasheet(PDF) 103 Page - Semtech Corporation