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ASTRO VG-871 - SVCHIP4 [20 H 46 H]: V-Chip Data Registration

ASTRO VG-871
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2.39 SVCHIP4 [20H 46H]: V-Chip data registration
Function: This command registers the V-Chip data of the designated program number.
When the program number is 0, it writes the data into the buffer RAM. When
it is 9999, it writes the data into the command work RAM.
Sequence: Type 2
Command:
STX
1 byte
02H
VG4CMD
1 byte
FDH
SVCHIP4
2 bytes
20H 46H
Program number
1 to 4 bytes
“0” to “1000”, “9999”
,
1 byte
2CH (Delimiter)
Mode
1 byte
“0” to “4”
,
1 byte
2CH (Delimiter)
MPAA Rate
1 byte
“0” to “7”
,
1 byte
2CH (Delimiter)
USTV Rate
1 byte
“0” to “7”
,
1 byte
2CH (Delimiter)
USTV Ext. Rate
1 byte
40H to 5FH *1
,
1 byte
2CH (Delimiter)
English Rate
1 byte
“0” to “6”
,
1 byte
2CH (Delimiter)
French Rate
1 byte
“0” to “5”
,
1 byte
2CH (Delimiter)
Interval
1 or 2 bytes
“0” to “60”
ETX
1 byte
03H
Fig. 2-39-1
*1: The contents of the data are as follows:
Bit7
Bit0
0
1
0
FV
V
S
L
D
Low = Off, High = On, Bits 5 to 7 are fixed

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