參數(shù)資料
型號: ADV7183B
廠商: Analog Devices, Inc.
英文描述: Multiformat SDTV Video Decoder
中文描述: 標(biāo)清多格式視頻解碼器
文件頁數(shù): 83/100頁
文件大?。?/td> 844K
代理商: ADV7183B
ADV7183B
Rev. B | Page 83 of 100
Bits
4
x
Comments
Notes
Subaddress
0x97
Register
CGMS2
(Read Only)
Bit Description
CGMS2[7:0]
CGMS data register.
CGMS3[7:0]
CGMS data register.
CCAP1[7:0]
Closed caption data register.
CCAP2[7:0]
Closed caption data register.
LB_LCT[7:0]
Letterbox data register.
7
x
6
x
5
x
3
x
2
x
1
x
0
x
0x98
CGMS3
(Read Only)
x
x
x
x
x
x
x
x
CGMS3[7:4] are
undetermined.
CCAP1[7] contains parity
bit for byte 0.
CCAP2[7] contains parity
bit for byte 0.
Reports the number of
black lines detected at
the top of active video.
Reports the number of
black lines detected in
the bottom half of
active video if subtitles
are detected.
Reports the number of
black lines detected at
the bottom of active
video.
Set as default.
Turn off CRC check.
CGMSD goes high with
valid checksum.
Set as default.
0x99
CCAP1
(Read Only)
x
x
x
x
x
x
x
x
0x9A
CCAP2
(Read Only)
x
x
x
x
x
x
x
x
0x9B
Letterbox 1
(Read Only)
x
x
x
x
x
x
x
x
0x9C
Letterbox 2
(Read Only)
LB_LCM[7:0]
Letterbox data register.
x
x
x
x
x
x
x
x
0x9D
Letterbox 3
(Read Only)
LB_LCB[7:0]
Letterbox data register.
x
x
x
x
x
x
x
x
This feature examines
the active video at the
start and at the end of
each field. It enables
format detection even
if the video is not
accompanied by a
CGMS or WSS
sequence.
Reserved.
CRC_ENABLE. Enable CRC checksum
decoded from CGMS packet to
validate CGMSD.
0
1
0
0
0xB2
CRC
Enable
Write
Register
Reserved
0
0
0
1
1
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