vpx3224d ETC-unknow, vpx3224d Datasheet - Page 32

• Manufacturer Part Number: vpx3224d
• Description: Video Pixel Decoders
• Manufacturer: ETC-unknow

32
VPX 3225D, VPX 3224D
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 2–13: Slicer Programming (shaded values are hard wired)
Programmable
Parameter
Parameter
text reception
TV standard
TV lines
bitrate
reference
mask
tolerance
byte_cnt
64 byte mode
dump mode
adaption
soft error correction
I2C Register
(hex)
(hex)
C9
C9
C9
C1, C2
BB, BC, BD
B8, B9, BA
CE
CF
CF
CF
C7
C7
Main Service
e.g. WST
on/off
pal/ntsc
vbi/full field
702
27 55 55
00 00 03
01 01 01
43
on/off
on/off
Table 2–12: Slicer Output Format
Byte
Number
1
2
3
4
.
byte_cnt+2
.
.
64
VPS
on/off
pal
16
506
51 55 55
00 00 00
01 01 01
28
Byte
Format
line number
high
line number low
framing code
1st data byte
...
last data byte
dummy byte
...
dummy byte
on/off
on/off
Side Services
PRELIMINARY DATA SHEET
WSS
on/off
pal
23
506
f8 3c 78
00 00 00
01 01 01
14
off
off
Bit
Format
b[7:3] frame counter
b[2]
b[1:0] line number[9:8]
b[7:0] line number[7:0]
b[7:0] as transmitted
b[7:0] as transmitted
...
b[7:0] as transmitted
b[7:0] 00000000
...
b[7:0] 00000000
odd field
CAPTION
on/off
ntsc
21
102
c2 aa a0
00 00 1f
01 01 01
5
Micronas