SAA7392HLM2B View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'SAA7392HLM2B' PDF : 76 Pages View PDF
Philips Semiconductors
Channel encoder/decoder CDR60
Preliminary specification
SAA7392
7.12.2 SUBCODE CONFIGURATION REGISTER 1 (SUBCONFIG1)
Table 96 Subcode Configuration Register 1 (address 23H) - WRITE
7
sri_on
6
p_toggle
5
p_one
4
time1
3
time2
2
copy_alter
1
zero_inc
0
time3
Table 97 Description of SubConfig1 bits
BIT
SYMBOL
DESCRIPTION
7
sri_on If sri_on = 0, then subcode generated by CDR60 for P and Q-channels; R to W
channels are all logic 0’s. If sri_on = 1, then subcode data from SRI except Q-channel
CRC and S0 and S1 bytes. SRI frame sync checking is enabled. SubConfig1 register
bits 1 to 6 do not effect the SRI subcode data.
6
p_toggle If p_toggle = 0, then P-channel takes value of the p_one bit. If p_toggle = 1, then
P-channel is the value of bit 5 of the absolute frame byte in the current Q-code memory
bank.
5
p_one P-channel is the value of this bit. The P-channel takes on a new value of p_one at the
start of a subcode frame.
4
time1 These 3 bits control the incrementing and decrementing of the Q-channel absolute and
3
time2
relative time fields; see Table 98.
0
time3
2
copy_alter If copy_alter = 0, then the copy bit will hold its current value. The copy bit value can be
changed by writing to the Q-code memory control byte via the SubData register. If
copy_alter = 1, then the copy bit in the subcode control byte will alternate every
4 subcode frames. This is accomplished by copying bit 2 of the current Q-code memory
absolute frame byte to the copy bit of the Q-code memory control byte.
1
zero_inc If zero_inc = 0, then all bits of the Q-code memory zero byte will hold. If zero_inc = 1,
then bits 0 to 3 of the current Q-code memory zero byte are incremented modulo 10.
Bits 4 to 7 are unchanged.
Table 98 Selection of Q-channel time fields
time3
0
0
1
1
1
X
time2
0
1
0
0
1
X
time1
0
1
0
1
1
X
Q-CHANNEL TIME FIELD
increment relative and absolute time
increment relative time and hold absolute time
hold relative time and increment absolute time
decrement relative time and increment absolute time
hold relative and absolute time
All other settings are reserved.
2000 Mar 21
48
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