參數(shù)資料
型號： VPX3224D
廠商： Electronic Theatre Controls, Inc.
英文描述： Video Pixel Decoders
中文描述： 視頻解碼器像素
文件頁數(shù)： 30/92頁
文件大小： 672K
代理商： VPX3224D
PRELIMINARY DATA SHEET
VPX 3225D, VPX 3224D
30
Micronas
2.12. Data Slicer
The data slicer is only available on VPX 3225D. Soft-
ware drivers accessing the slicer I
2
C registers should
therefore check the VPX part number.
2.12.1. Slicer Features
– 8-bit digital FBAS input
– 8-bit unbuffered ascii data output
– internal sync separation
– PAL and NTSC operation
– VBI and full-field mode
– automatic slicer adaptation
– text reception down to 30% eyeheight
– soft error correction
– simultaneous decoding of 4 different text services
main service:
programmable
side service:
VPS in line 16
side service:
CAPTION in line 21
side service:
WSS in line 23
– programmable text parameters for main service
bit rate
clock run-in
framing code
error tolerance
number of data bytes
– operation controlled by I
2
C registers
2.12.2. Data Broadcast Systems
Table 2–11 gives an overview of the most popular data
broadcast systems throughout the world. The data slicer
of the VPX 3225D can be programmed to acquire the dif-
ferent data systems via a set of I
2
C registers.
The various data broadcast systems are specified by a
limited set of parameters:
– line multiplex (VBI)
– bit rate
– modulation
– start timing
– clock run-in (CRI)
– framing code (FRC)
– number of data bytes
Table 2–11:
Data Broadcast Systems
Text
System
TV
Standard
TV
Lines
Bitrate
Modulation
Timing
CRI
FRC
No.
Bytes
WST
PAL
6–22
6.937500Mbit/s
NRZ
10.3
μ
s
’5555’x
’27’x
42
VPS
PAL
16
2.500000Mbit/s
Bi-Phase
12.5
μ
s
’5555’x
’51’x
13
WSS
PAL
23
0.833333Mbit/s
Bi-Phase
11.0
μ
s
’3c78’x
’f8’x
11
Caption
PAL
21
1.006993Mbit/s
NRZ
10.5
μ
s
’aaa0’x
’c2’x
4
VITC
PAL
6–22
1.812500Mbit/s
NRZ
11.2
μ
s
9
Antiope
SECAM
6–22
6.203125Mbit/s
NRZ
10.5
μ
s
’5555’x
’e7’x
37
WST
NTSC
10–21
5.727272Mbit/s
NRZ
9.6
μ
s
’5555’x
’27’x
34
NABTS
NTSC
10–21
5.727272Mbit/s
NRZ
10.5
μ
s
’5555’x
’e7’x
33
Caption
NTSC
21
1.006993Mbit/s
NRZ
10.5
μ
s
’aaa0’x
’c2’x
4
2xCaption
NTSC
10–21
1.006993Mbit/s
NRZ
10.5
μ
s
’2aa0’x
’b7’x
4
VITC
NTSC
10–21
1.812500Mbit/s
NRZ
11.2
μ
s
9
CGMS
NTSC
20
0.450450Mbit/s
NRZ
11
μ
s
’10’b
–
3
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VPX3224D-C3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microprocessor
VPX3224E 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Pixel Decoders
VPX3225D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video Pixel Decoders
VPX3225D-C3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microprocessor
VPX3225E 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Pixel Decoders
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