參數(shù)資料
型號(hào)： TMC22053A
廠商： Fairchild Semiconductor Corporation
英文描述： 8-Bit Digital Video Decoder(8位數(shù)字視頻譯碼器)
中文描述： 8位數(shù)字視頻解碼器（8位數(shù)字視頻譯碼器）
文件頁(yè)數(shù)： 60/84頁(yè)
文件大?。?/td> 420K
代理商： TMC22053A
TMC22x5yA
PRODUCT SPECIFICATION
60
DHSYNC are referenced to the input data (0HFLAT) and not
the output of the LSTORE1, i.e. 1HFLAT.
The duration of the DVSYNC signal is fixed to one line and
the duration of the DHSYNC signal is 64 clock periods.
Both these signals are generated by the internal horizontal
and vertical state machines.
The falling edge of these signals relative to the data matches
the requirements of the TMC22x91 family of digital encod-
ers.
AVOUT Active Video (Output Pin)
The decoder produces an active video signal starting 4 PCK
before the programmed start of active video and ending 4
PCK after the programmed end of active video. This signal is
used in both the video mixer (TMC22x8x) family and the
digital encoder (TMC22x9x) family. The end points of this
signal are flagged by the internally generated SAV and EAV
signals.
VBLK (Vertical Blanking Period)
**
The vertical blanking period conforms to the CCIR 656
specification for D1 component data streams. This signal is
decoded from the line ident, LID
4-0
, and is active low.
Table 18. Vertical Blanking Period
BBLK (Vertical Burst Blanking Period)
The vertical burst blanking blanks the lines with no burst
from the burst phase locked loop. This signal is controlled by
the video standard and the field count. The burst blanking
signal is active low.
**
Signal is available over the microprocessor data bus.
Table 19. Vertical Burst Blanking Period
LID
4-0
List of Line Idents
The line numbers required to produce all the decoder control
signals are summarized in
Internal field no
0,2
Internal line no
0 - 5
260 & 261
0 - 6
260 - 262
0 - 21
310 & 311
0 - 22
311 & 312
0 - 5
260 & 261
0 - 6
260 & 262
NTSC
1,3
PAL
0, 2, 4, & 6
1, 3, 5, & 7
PAL-M
0, 2, 4, & 6
1, 3, 5, & 7
Internal field no
0,2
Internal line no
0 - 5
259 - 261
0 - 6
260 - 262
0 - 5
309 - 311
0 - 5
309 - 312
0 - 4
310 & 311
0 - 6
310 - 312
0 - 7
259 - 261
0 - 7
259 - 262
0 - 6
258 & 261
0 - 6
260 - 262
NTSC
1,3
PAL
0 & 4
1 & 5
2 & 6
3 & 7
PAL-M
0 & 4
1 & 5
2 & 6
3 & 7
Table 20. Table of Line Idents, LID[4:0]
Line no:
0
1 - 4
5
6
7
8
9 - 16
17
18
19 - 21
22
23
24
25 - 257
258
259
LID
4-0
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
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