lc7872e Sanyo Semiconductor Corporation, lc7872e Datasheet - Page 16

• Manufacturer Part Number: lc7872e
• Description: Cd Graphics Decoder
• Manufacturer: Sanyo Semiconductor Corporation

2. 19-byte input command (MGC write)
3. 19-byte output command (packed data readout)
Address (F4h): lsb
Control item:
Data:
This command is executed on the CE falling edge.
Address (F5h): lsb
Check flags:
Data:
Note that when it is not necessary to read out all 19 bytes, the readout can be interrupted at any point in byte units.
(In particular, this command can be used to read out only the check flags.)
A = Set to 1 when the following 18 bytes are guaranteed and furthermore this is the first data item read out.
(The readout operation must be completed within 1.1 ms.)
B = 0: Command execution in progress
C = VBLANK:Set to 1 during the vertical blanking period
D = Disk identifier flag
Q = QF0 and QF1 (Q error correction flags)
P = PF0 and PF1 (P error correction flags)
1: Command wait state
0: CD
1: CD-G
lsb
lsb
lsb
lsb
[ 0 0 1 0 1 1 1 1 ]
[ 1 - - - - - - - ]
[ - - WV U T S R ]
[ 1 0 1 0 1 1 1 1 ]
[ A B C D Q Q P P ]
[ - - WV U T S R ]
msb
msb
msb; R to W is the subcode input.
msb
msb
msb
LC7872E
No. 4868-16/17