Sanyo DC-MCR30, Service Manual

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IC BLOCK DIAGRAM & DESCRIPTION

IC101 TA8132(AM/FM IF+MPX)

IC203 BU1923(RDS/RBDS Decoder)

IC201 TMP87EP26(Micom)

16-bit

Tiner/Counter

Time Base

Timer

Watchdog

Timer

TC1

System Controller

Standby Controller

Timing Generator

High frequ.

Low frequ.

Clock

Generator

TC2

Interrupt Controller

8-bit

Tiner/Counter

Oata Memory

(RAM)

Data Memory

(EEPROM)

Program

Counter

8bit

AD converter

P5

P0

P4

I/O ports

V

AREF

I/O ports (Segment output)

Segment output

Common output

P3

P4

PD

P2

Program Memory

TC3

TC5

Serial

Interfaces

SIO1

SIO2

Register banks

Stack Pointer

Flags

RBS

PSW

LOD Driver

ALU

VDD

VSS

VLC

RESET

BOOT

TEST

XIN

XOUT

MROM

BOOT

Inst. Register

Inst. Decoder

EEPROM

P9

P6

P93/SEG12

to

P90/SEG15

COM3

to

COM0

P22 to P20

P57 to P50

(AIN7) to (AIN0)

P07 to P00

P17 to P10

P36 to P30

P47 to P40

PD2

to

PD0

SEG1

1

to

SEG0

P87/SEG32

to

P80/SEG39

P77/SEG24

to

P70/SEG31

P67/SEG16

to

P60/SEG23

P7

P8

IC301 TC9257F(TUNER PLL)

2 MODULUS

PRESCALER

4bit SWALLOW

COUNTER

POWER ON

RESET

TRI-STATE

BUFFER

TRI-STATE

BUFFER

OUTPUT PORT

ADDRESS

DECODER

OSC

CIRCUIT

PHASE

COMP

ARA

T

O

R

12bit PROGRAMMABLE COUNTER

20bit BINARY COUNTER

UNIVERSAL COUNTER CONTROL

REFERENCE COUNTER

24bit REGISTER

24bit SHIFT REGISTER

24bit REGISTER

MAX

1/ 2

UNLOCK

I/O POR

T

XT

20

DO2

1

XT

19

DO1

2

PERIOD

18

I/O-7/SC

IN

3

CLOCK

17

I/O-8/IF

IN1

4

DATA

16

I/O-9/IF

IN2

5

OT-1

15

GND

6

OT-2

14

FM

IN

7

OT-3

13

AM

IN

8

12

9

11

10

OT-4

V

DD

I/O-5/CLK

I/O-6

TC9257P, TC9257F

Top View

DIP-20PIN / SOP-20PIN

XT

16

DO2/OT-4

1

XT

15

DO1

2

PERIOD

14

I/O-5/IF

IN1

3

CLOCK

13

I/O-6/IF

IN2

4

DATA

12

GND

5

OT-1

11

6

OT-2

10

AM

IN

7

OT-3

9

V

DD

FM

IN

8

TC9256P, TC9256F

Top View

DIP-16PIN / SOP-16PIN

TEST

GATE

AMP

AMP

AMP

OT-4

OT-4

OT-1

OT-3

OT-2

OT-4

RESET

PSC

MODE LF

FM

HF

FM

H

FM

L

XT

1ms

1ms

OSC

4

8

24

22

10

5

5

4

4

15

12

4

DO1

I / O-5 / CLK

I / O-6

I / O-7 / SC

IN

DO2
(DO2 / OT-4)

I / O-9 / IF

IN2

  (I / O-6 / IF

IN2

)

I / O-8 / IF

IN1

  (I / O-5 / IF

IN1

)

GND

V

DD

FM

IN

AM

IN

XT

XT

DATA

CLOCK

PERIOD

(Note)        Mark terminals are not existence in TC9256P, TC9256F.

            Terminal name of TC9256P, TC9256F is shown in parentheses.

            Others are common terminals.

IC402 TC9422F(Volume Control)

GND

2

1

V

DD

28

3

4

5

6

7

8

9

10

11

12

13

14

15

16

27

26

25

24

23

22

21

20

19

18

17

Vref

CK

DATA

STB

32BIT SR

50k  

500

750

50k   

100k

MAIN VR
50k    / 64STEP

13k

13k

1k

BASS VR
50k   /
16STEP

TREBLE VR
50k   /
16STEP

50k   

CAPACITOR FOR
OSCILLATION

GAIN CONTROL
0, 6, 12, 18dB

INPUT
SELECTOR

500  

750  

50k  

100k   

MAIN VR

50k    / 64STEP

13k

13k   

1k

BASS VR

50k   /

16STEP

TREBLE VR

50k    /

16STEP

CAPACITOR FOR

OSCILLATION

GAIN CONTROL

0, 6, 12, 18dB

INPUT

SELECTOR

L-IN1

L-IN2

L-IN3

L-IN4

L-SW-OUT

L-VR-IN

L-B1

L-B2

L-B3

L-Tone-OUT

L-T1

R-IN1

R-IN2

R-IN3

R-IN4

R-SW-OUT

R-VR-IN

R-B1

R-B2

R-B3

R-Tone-OUT

R-T1