MN662785TBUC Datasheet, PDF (57/89 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

MN662785TBUC
(E) Q code input for optical digital output signal (TX)
MDATA
Q0 Q1 Q2 ŋŋŋŋŋŋŋ Q77 Q78 Q79
MCLK
ŋŋŋŋŋŋŋŋ
MLD
If the anti-shock memory controller is turned on, Q code data can be set for user data on the optical digital
output signal.
Table 7-1-6 (5)
Command
(HEX)
(B7 to B0)
87
Data
Q0 to Q79
(80 bits)
Symbol
MCQ
Function
Q code input for TX
Internal block
sync signal


CLDCK ɹŋŋŋ
Input timing
Output timing


ɹŋŋŋ


ɹŋŋŋ
16 clocks


ɹŋŋŋ
a


ɹŋŋŋ
16 clocks
ɹŋŋŋ
b


ɹŋŋŋ
16 clocks


ɹŋŋŋ
c
A
The Q code that is input into a-zone is output as bit U data during period A.
Details of bit U
(Q chan_ɹne_-l)_--
0 0 Q0 Q1
ɹ---
Sub code
Sync word
Input data
Q79 Q80 Q81
ɹ---
CRC data (16 bits)
Q95 0 0
Sub code
Sync word
ɹ---
CRC data is generated from the arithmetic operation of input data and added.
Note1) The internal block sync signal is a synchronized with a subcode sync word.
Data input
a
b
c
BLKCK
Output data
A
A
B
C
C
If no Q code is input, the previous value will be kept on hold and bit U will be output. At that time, CRC
data is added with disabling data.
Note2) ɾInterruption is not allowed while the Q code is input, otherwise the wrong bit U will be output.
ɾThe Q code cannot be input into a single block more than once, otherwise the wrong bit U will
be output.
SDD00026AEM
57