HD49235FS Datasheet, PDF (7/41 Pages) Hitachi Semiconductor – Digital Signal Processor for CD

Block Diagram
HD49235FS
79 78 77 76 75 74
72 25 27 69 68 67 66
SLOCK 80
XRST 1
CNIN 2
SENS 3
DATA 4
CLK 5
XLT 6
QDSEL 65
S1 9
QOK 10
QDATA 11
CKEXT 12
SUBOUT 13
SUBCK 14
CFCKP 15
EMP 16
BIDAT 17
MUTE 18
DAS 19
CKX 20
MPX 21
C2F 22
CLV servo control
Sync protection
Microprocessor
interface
Cmp
EFM
demodula-
tion
Data strobe
+-
VCO
Freq. Div.
64 PDOUT1
62 AMPP
61 AMPM
59 AC
60 AMPO
57 PDOUT2
54 PLLCK
Subcode signal
processing
Data bus
Digital output
Error correction unit
(ECU)
26 TC1
16 k SRAM
RAM control
8 OVFW
Interpolation
Timing
generator
29 30 55 56
70 71
23 24
Rev.2, Aug. 1995, page 7 of 41