Teac V-970X - 8 IC Block Diagrams; µPD7566 CS and TC74 HC154 P ICs

V-970X/R-919X
8 IC BLOCK DIAGRAMS
ICFAvASAVIFGA
uPD7566CS
INTO/POO
cL
CLOCK 5 TIMER/ a TEST
CONTROL EVENT COUNTER CONTROL
= PORTO POO/INTO (1)
BUFFER Pol/vret @)
PORT I
(—_Jeurrer = [4] Pio/cino~P13/cin3
/COMPARATOR @-©
PORTS
LATCH [ 3_) Pao-pez @-@
eUErer Tbe PESICL2) ©
PROGRAM MEMORY Soar e
INSTRUCTION
Latch [2 )P90,91 @,@
BUFFER
8
1024x8 BITS DECODER
PORTIO
csé«s kK} catch 4) ptoo-Pi0s @-@
BUFFER
DATA MEMORY
64x4 BITS
ticle STANDBY PORT S{
CONTROL (__} LATCH PILO=PII3 @@)—
GENERATOR BUFFER me, @-@
cud cL2ipas) Yoo Vsg_ «RESET
© @ e ®
TC74HC154P
Yo Vec SELECTED
OUTPUT (L)
Yi A
Y2 B
Y3 c
¥4 D
Y5 G2
Y6 Gi
Y7 vis
Y8 Yi4
Y9 Y13
Yio Yi2
GND Yi
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