GS2972 Datasheet, PDF (14/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name
Timing
Type
E3, E4
RATE_SEL0,
RATE_SEL1
Input
Description
CONTROL SIGNAL INPUT.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Used to configure the operating data rate.
RATE_SEL0
0
RATE_SEL1
0
Data Rate
1.485 or 1.485/1.001Gb/s
0
1
2.97 or 2.97/1.001Gb/s
1
X
270Mb/s
E7
TDI
E8
TMS
E10
CD_VDD
F1, F2, H1,
H2, J1, J2,
K1, K2, J3,
K3
DIN[9:0]
Input
COMMUNICATION SIGNAL INPUT.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Dedicated JTAG pin.
Test data in.
This pin is used to shift JTAG test data into the device when the
JTAG/HOST pin is LOW.
Input
COMMUNICATION SIGNAL INPUT.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
Dedicated JTAG pin.
Test mode start.
This pin is JTAG Test Mode Start, used to control the operation of
the JTAG test when the JTAG/HOST pin is LOW.
Input Power
Power for the serial digital cable driver. Connect to +3.3V DC
analog.
PARALLEL DATA BUS.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
In 10-bit mode, these pins are not used.
Input
20-bit mode
20BIT/10BIT = HIGH
Data Stream 2/Chroma data input in
SMPTE mode SMPTE_BYPASS = HIGH
DVB_ASI = LOW
Data input in data through mode
SMPTE_BYPASS = LOW
DVB_ASI = LOW
Not Used in DVB-ASI mode
SMPTE_BYPASS = LOW
DVB_ASI = HIGH
10-bit mode
20BIT/10BIT = LOW
High impedance.
GS2972 3G/HD/SD-SDI Serializer with Complete
SMPTE Audio & Video Support
Final Data Sheet Rev. 9
GENDOC-047479 September 2013
www.semtech.com
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