Philips Semiconductors
Chinese Character System Teletext
(CCST) decoder
Preliminary specification
SAA5700
Extended commands
The extended commands for the decoder are listed in Table 3.
Table 3 Extended commands
OBJECT
FUNCTION
PARAMETER LENGTH
(BYTES)
PARAMETERS
NAME
ID
(HEX)
NAME
Display
48 set sync mode
set display
position
Processor
52 restart software
Memory and OSD 53 read packet
ID
(HEX)
04
08
06
03
INPUT
1
4
3
1
[+1]
write packet
06
1
+40
OSD mode on
08
0
OSD mode off
0A
0
OSD display
0E
0
clear display page 10
0
OUTPUT
INPUT
OUTPUT
−
sync mode
none
−
row start, line start none
−
FFFFFCH
none
40
packet number, packet data
[Designation
code]
−
packet number, none
packet data
−
none
none
−
none
none
−
none
none
−
none
none
1997 May 16
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