GS2972 Datasheet, PDF (11/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin
Number
Name
Timing
B3, A2, A1,
B2, B1, C2,
C1, C3, D1,
D2
DIN[19:10]
Synch-
A3
F/DE
ronous
with
PCLK
Type
Input
Input
Description
PARALLEL DATA BUS.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
20-bit mode
20BIT/10BIT = HIGH
Data Stream 1/Luma data input in
SMPTE mode (SMPTE_BYPASS = HIGH)
Data input in data through mode
(SMPTE_BYPASS = LOW)
10-bit mode
20BIT/10BIT = LOW
Multiplexed Data Stream 1/Luma and
Data Stream 2/Chroma data input in
SMPTE mode
(SMPTE_BYPASS = HIGH)
Data input in data through mode
(SMPTE_BYPASS = LOW)
DVB-ASI data input in DVB-ASI mode
(SMPTE_BYPASS = LOW)
(DVB_ASI = HIGH)
PARALLEL DATA TIMING.
Please refer to the Input Logic parameters in the DC Electrical
Characteristics table for logic level threshold and compatibility.
TIM_861 = LOW:
Used to indicate the ODD / EVEN field of the video signal when
DETECT_TRS is set LOW. The device will set the F bit in all outgoing
TRS signals for the entire period that the F input signal is HIGH
(IOPROC_EN/DIS must also be HIGH).
The F signal should be set HIGH for the entire period of field 2 and
should be set LOW for all lines in field 1 and for all lines in
progressive scan systems.
The F signal is ignored when DETECT_TRS = HIGH.
TIM_861 = HIGH:
The DE signal is used to indicate the active video period when
DETECT_TRS is LOW. DE is HIGH for active data and LOW for
blanking. See Section 4.3 and Section 4.3.2 for timing details.
The DE signal is ignored when DETECT_TRS = HIGH.
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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