GS2970A Datasheet, PDF (15/150 Pages) Gennum Corporation – Integrated audio clock generator

Table 1-1:Pin Descriptions (Continued)
Pin
Number
H7
H8
J1, K1
J2
J3
J4
J5
J6, K6
K2
K3
Name
Timing
Type
Description
20bit/10bit
IOPROC_EN/DIS
SDO, SDO
SDO_EN/DIS
AOUT_1/2
ACLK
AOUT_5/6
XTAL2, XTAL1
STANDBY
AOUT_3/4
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in theDC 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.
Input
CONTROL SIGNAL INPUT
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
When this pin is set HIGH, the device is placed in a power-saving
mode. No data processing occurs, and the digital I/Os are powered
down.
In this mode, the serial digital output signals, SDO and SDO, are
both pulled HIGH.
Output
Serial Audio Output; Channels 3 and 4.
Please refer to the Output Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
GS2970A 3Gb/s, HD, SD SDI Receiver
Data Sheet
54244 - 2
September 2012
15 of 150