LC895127 Datasheet, PDF (7/8 Pages) Sanyo Semicon Device – 40 x CD-ROM Decoder with SCSI Interface

Block Diagram
LC895127, 895127K
Data bus[0:7]
LC895127
RAM
Data bus[0:15] Address bus[0:21]
*10
CD-DSP
*1
EXCK
*2
CD-DSP I/F
& SYNC
Detector
HOST
*3
*4
Micro
controller
INT0, 1
*5
*6
SWAIT
XTALCK
XTAL
MCK
Each Block
Register
decoder
Clock
generator
&
PLL
Each Block
Sub-code I/F
de-interleve
Address generator
De-scramble &
Buffering
Address generator
ECC & EDC
Address generator
SCSI I/F
Block
Data output input I/F
Address generator
Microcontroller
RAM access
Address generator
CAV-Audio control
Address generator
*1 WFCK, SBSO, SCOR
*2 BCK, SDATA, LRCK, C2PO
*3 DB0 to DB7, DBP, BSY, MSG, SEL, RST, REQ, I/O, C/D
*4 ACK, ATN
*5 RD, WR, SUA0 to SUA6, ZCS, CSCTRL
*6 D0 to D7
*7 IO0 to IO15
*8 RA0 to RA10, RAS1, CAS0, CAS1, OE, UWE, LWE
*9 DBCK, DLRCK, DSDATA
*10 IOP7 to IOP0
Each Block
Bus control
signal
Bus
Arbiter
*7
&
RAM
*8
controller
External
Buffer
DRAM
*9
DAC
A12529
No. 6236-7/8