GS2971A Datasheet, PDF (15/152 Pages) Gennum Corporation – Integrated audio clock generator

Table 1-1:Pin Descriptions (Continued)
Pin
Number
H5
H6
H7
H8
J1, K1
J2
J3
J4
J5
J6, K6
Name
Timing
Type
Description
TIM_861
XTAL_OUT
20bit/10bit
IOPROC_EN/DIS
SDO, SDO
SDO_EN/DIS
AOUT_1/2
ACLK
AOUT_5/6
XTAL2, XTAL1
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Used to select CEA-861 timing mode.
When TIM_861 is HIGH, the device outputs CEA 861 timing signals
(HSYNC/VSYNC/DE) instead of H:V:F digital timing signals.
Digital
Output
Buffered 27MHz crystal output. Can be used to cascade the crystal
signal.
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Used to select the output bus width.
HIGH = 20-bit, LOW = 10-bit.
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Used to enable or disable audio and video processing features.
When IOPROC_EN is HIGH, the audio and video processing features
of the device are enabled. When IOPROC_EN is LOW, the processing
features of the device are disabled, and the device is in a
low-latency operating mode.
Output
Serial Data Output Signal.
50Ω CML buffer for interfacing to an external cable driver.
Serial digital output signal operating at 2.97Gb/s, 2.97/1.001Gb/s,
1.485Gb/s, 1.485/1.001Gb/s and 270Mb/s.
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Used to enable/disable the serial digital output stage.
When SDO_EN/DIS is LOW, the serial digital output signals, SDO and
SDO, are both pulled HIGH.
When SDO_EN/DIS is HIGH, the serial digital output signals, SDO and
SDO, are enabled.
Output
Serial Audio Output; Channels 1 and 2.
Please refer to the Output Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Output
64fs sample clock for audio.
Please refer to the Output Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Output
Serial Audio Output; Channels 5 and 6.
Please refer to the Output Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Analog Input Input connection for 27MHz crystal.
GS2971A 3Gb/s, HD, SD SDI Receiver
Data Sheet
54311 - 2
September 2012
15 of 152