LC897127K Datasheet, PDF (4/14 Pages) Sanyo Semicon Device – SCSI CD-ROM Decoder with On-Chip DVD Interface

Block Diagram
LC897127K
*10
DVD DSP
Data bus[0:7]
LC897127K
RAM
Data bus[0:15] Address bus[0:21]
DVD DSP I/F
Address generator
CD-DSP
*1
EXCK
Sub-code I/F
de-interleve
Address generator
*2
CD-DSP I/F
& SYNC
Detector
De-scramble &
Buffering
Address generator
HOST
*3
*4
Micro
controller
INT0, 1
*5
*6
SWAIT
XTALCK
XTAL
MCK
Each Block
Register
decoder
Clock
generator
&
PLL
Each Block
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
Each Block
Bus control
signal
Bus
Arbiter
&
*7
RAM
controller
*8
&
IF
controller
*9
DRAM
or
ATAPI
I/F IC
or
DMA
I/F IC
DAC
*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, CS, CSCTRL
*6. D0 to D7
*7. IO0 to IO15 (Data bus for both ATAPI and DMA interfaces)
*8. RA0 to RA10, RAS1, RAS0, OE, UWE, LWE
ATAPI interface: SBSO (DMARQ), DBCK (DMACK), DLRCK (DIOR), DSDATA (DIOW)
DMA interface: EXCK (DMARQ), C2PO (DMACK), SDATA (DIOR), BCK (DIOW)
*9. DBCK, DLRCK, DSDATA
*10. HDB7 to HDB0, DRESP, DREQ
See the circuit examples for details on ATAPI and DMA interface IC
connection.
A12551
No. 6251-4/14