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1C312 Main Microcomputer (CXP80524-091Q)
This Microcomputer generally controls the operation of the equipment while exchanging data with the display microcomputer (IC701) and mechanism/
servo microcomputer (IC311!) in serial communications, including the DAT signal processor (IC307), digital filter (IC363) and other IC.
Micom: Microcomputer
VCO EN
L_MUTE
veneer
DATA_7-4
DATA_3-0
ATT_EXT
DIG/ANA
DTR
OPT/COA
FS32
RAM_SEL
DISP_REQ
SD_SEL
SRV_REQ
CLOCK_SEL
DISP_ACK
DISP_DT_I
DISP_DT_O
DISP_CK
SBSY
SR_DT_IN
SR_DT_OUT
SR_CK
AVss
AVref
BUSY
AU_BUS_IN
Oo
O
oO
Oo
O
oO
Oo
l/O
VO
O
oO
O
O
oO
O
oO
oO
1)
oO
oO
oO
I
oO
VCO Circuit
Line Out
Clock IC
Clock IC
Clock IC
Clock IC
CXD1136Q
CXD1136Q
CXD1136Q
CXD1136Q
CXD2601AQ
Digital 1/0
Display Micom
CXD2601AQ
Mechanism
Micom
Clock IC
CXD2601AQ
je
Micom
Mechanism
Micom
Pull-up
VCO enable out
Line Mute (Active "L")
Not in use
Not in use
Write request (Active "L")
Read request (Active "L")
Address 3-0 (Address BUS)
DATA 7-4 (DATA BUS). Not in use with the equipment
DATA 3-0 (DATA BUS)
Fade attenuator ck externally selected (Active "L'"')
Fade In/Out switching for DIG ("L")/ANA ("H")
Fade In/Out REC switching for ("L")/PB (""H")
Clock for fade In/Out
Audio use ("H")/Data Recorder use ("'L). Becomes "L" in after-recording and
searching.
Switching for Optical ("L")/Coaxial ("'H")
Not in use
Not in use
Request for communication wita the Display Micom ("L" Active)
Request for communication with CXD2601 ("L" Active)
Request for communication with the Mechanism Micom ("'L" Active)
Clock IC chip selected
Microprocessor mode selected (fixed at "L" with the equipment)
System Reset ("L" Active)
Power terminal (GND)
System Clock Output (Not in use)
System Clock Input (9.048 MHz)
ACKnowledge (Active "L")
Serial Input
Serial Output
Serial clock
Subcode sync
Serial Data In
Serial Data Out
Serial clock (In/Out) to Sub Code Interface
GND for A/D
Reference Voltage for A/D (+5 V)
Power Supply for A/D (+5 V)
Not in use
Not in use
Mechanism servo Micom Busy (Active "L")
Not in use
Pe E e e RS a Re
ee a Re e
Ra
aL P
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