參數(shù)資料
型號(hào)： VPX322XE
廠商： MICRONAS SEMICONDUCTOR HOLDING AG
英文描述： Video Pixel Decoders
中文描述： 視頻解碼器像素
文件頁數(shù)： 33/92頁
文件大小： 567K
代理商： VPX322XE
ADVANCE INFORMATION
VPX 322xE
33
Micronas
The number of useful data bytes at the output is pro-
grammable and should be set accordingly to the se-
lected teletext standard. To get
“
n
”
data bytes, the value
“
n+1
”
has to be programmed, because of the additional
framing code byte.
In case of dump mode, byte numbers
“
1
”
and
“
2
”
are also
valid for lines without detected text data. They are then
followed by 62 dummy bytes.
Table 2
–
11:
Slicer Output Format
Byte
Number
Byte
Format
Bit
Format
1
line number
high
b[7:3] frame counter
b[2]
odd field
b[1:0] line number[9:8]
2
line number low
b[7:0] line number[7:0]
3
framing code
b[7:0] as transmitted
4
1st data byte
b[7:0] as transmitted
.
...
...
byte_cnt+2
last data byte
b[7:0] as transmitted
.
dummy byte
b[7:0] 00000000
.
...
...
64
dummy byte
b[7:0] 00000000
Table 2
–
12:
Slicer Programming (shaded values are hard wired)
Programmable
Parameter
I2C Register
(hex)
Main Service
Side Services
e.g. WST
VPS
WSS
CAPTION
text reception
C9
on/off
on/off
on/off
on/off
TV standard
C9
pal/ntsc
pal
pal
ntsc
TV lines
C9
vbi/full field
16
23
21
bit rate
C1, C2
702
506
506
102
reference
BB, BC, BD
27 55 55
51 55 55
f8 3c 78
c2 aa a0
mask
B8, B9, BA
00 00 03
00 00 00
00 00 00
00 00 1f
tolerance
CE
01 01 01
01 01 01
01 01 01
01 01 01
byte_cnt
CF
43
28
14
5
64 byte mode
CF
on/off
dump mode
CF
on/off
adaption
C7
on/off
off
soft error correction
C7
on/off
off
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