Overview - Semtech EB-GS2971 User Manual

Overview

Together with the EB-GS2971 Evaluation Board, this document serves as a guide for
evaluating the GS2971; a Gennum 3Gb/s, HD, SD SDI Receiver, with integrated
equalizer. This document contains four main sections:
1. Evaluation Board User Guide.
2. Evaluation Board Schematics.
3. Evaluation Board Layout.
4. Evaluation Board Bill of Materials
The figure below shows a block diagram of the features and the functions of the
EB-GS2971.
The board includes a power supply, a 3G-SDI input, a 3G-SDI loop-through output, a
GS2971 Receiver, a parallel video output connector, an audio output with four BNCs for
AES audio, a four-pin header for serial audio, a JTAG/GSPI header, a 27MHz crystal, a
DIP switch and some status indication LEDs.
The GS2971 will automatically detect the input signal as SD-SDI, HD-SDI or 3G-SDI. The
input format may also be configured to DVB-ASI or Data-Through mode manually,
through a DIP switch. The deserialized video is available on the parallel output
connector (J16). The extracted audio is available as serial audio or AES on an audio
header (J23), or as buffered AES only audio on the BNC connectors (J19-J22). A serial
digital loop-through output is also available.
The EB-GS2971 also provides a JTAG interface and access to the GS2971's internal
registers via GSPI. A GSPI dongle is included in the kit, to communicate with the GS2971
through a USB connection.The GSPI dongle has the provision to control and monitor an
additional EB2972 board connected to the EB-GS2971.
Power
3G-SDI I/P
GS2971
(Receiver)
DIP Switch
GSPI/JTAG
Header
LEDs
(Lock; Data Error)
Block Diagram of the EB-GS2971
EB-GS2971
Evaluation Board User Guide
52169 - 2 June 2012
3G-SDI
Audio
Loop-Through
Header
CD
(GS2978)
8-ch Audio
AES
Audio Clocks
PCLK
20-bit Video
FVH
GSPI/5V
Audio
O/P
Parallel
Video
O/P
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