參數(shù)資料
型號(hào)： GS1532-CF
廠商： Gennum Corporation
英文描述： GS1532 HD-LINX-TM II Multi-Rate Serializer
中文描述： GS1532的HD - LINX進(jìn)程，商標(biāo)第二多速率串行器
文件頁(yè)數(shù)： 30/52頁(yè)
文件大?。?/td> 512K
代理商： GS1532-CF
GS1532 Data Sheet
21498 - 6
June 2005
30 of 52
3.6 Additional Processing Functions
The GS1532 contains an additional data processing block which is available in
SMPTE mode only, (see
SMPTE Mode on page 27
).
3.6.1 Input Data Blank
The video input data may be 'blanked' by the GS1532. In this mode, all input video
data except TRS words are set to the appropriate blanking levels by the device.
Both the horizontal and vertical ancillary data spaces will also be set to blanking
levels.
This function is enabled by setting the BLANK pin LOW.
3.6.2 Automatic Video Standard Detection
The GS1532 can detect the input video standard by using the timing parameters
extracted from the received TRS ID words or supplied H, V, and F timing signals
(see
Internal Flywheel on page 27
). This information is presented to the host
interface via the VIDEO_STANDARD register (
Table 3-2
).
Total samples per line, active samples per line, total lines per field/frame and active
lines per field/frame are also calculated and presented to the host interface via the
RASTER_STRUCTURE registers (
Table 3-3
). These line and sample count
registers are updated once per frame at the end of line 12. This is in addition to the
information contained in the VIDEO_STANDARD register.
After device reset, the four RASTER_STRUCTURE registers default to zero.
Table 3-2: Host Interface Description for Video Standard Register
Register Name
Bit
Name
Description
R/W
Default
VIDEO_STANDARD
Address: 004h
15
–
Not Used.
–
–
14-10
VD_STD[4:0]
Video Data Standard (see
Table 3-4
).
R
0
9
INT_PROG
Interlace/Progressive: Set LOW if detected video
standard is PROGRESSIVE and is set HIGH if it is
INTERLACED.
R
0
8
STD_LOCK
Standard Lock: Set HIGH when flywheel has
achieved full synchronization.
R
0
7-0
–
Not Used.
–
–
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