Harman Kardon HD7725 - Page 38

HD7725
IC401 : M957-243
Microcomputer
Clock Clock
input input Pull-down
Clock Clock {for far Reset voltage
input output timer timer Timing input, put oY ov) (OY)
ce | ss CNVss
iN. XauT Xow Xcour output RESET Vp
Timer count source
Glock generating circuit
Program : Instruction
RAM
counter
E i
register
256
bytes
PCR(6)
is
decoder
Instruction
Address bus
i : Control signal
_
:
a:
‘thm
vt and = A f Processor Index
logical art a status register register
unit PS (8) (8)
PM Cheat
: ct
ANN INT2 INT:
. Ae
Output port PO Output port P1 VO port P2 VO port P3 Output port P4 HO port PS VO port Pé
IC601 : SM5840CP
8 fs Digital Filter
LRCI DIN BCKI
SYSTEM
CLOCK
INPUT
INTERFACE
i FILTER OPERATIONAL &
ATTENUATION OPERATIONAL
BLOCK
{
TIMING CONTROL
do0rssMns
DEEMPHASIS &
SOFTMUTE CONTROL OUTPUT
INTER-
Vss Voo Owié Ow20
35