MAIN BOARD IC501 MB90574PMT-G-266-BND (MASTER CONTROLLER)

Pin No.

Pin Name

I/O

 

 

Description

 

 

 

 

 

 

 

 

 

 

1

TUNON

O

 

Tuner system power supply on/off control signal output to the BA4908 (IC671)

 

“H”: tuner power on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

ANT CUT

O

 

Tuner system power supply on/off control signal output terminal “H”: tuner power on

 

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

BUSON

O

 

Bus on/off control signal output to the MD mechanism controller (IC501) and SONY bus

 

interface (IC701) “L”: bus on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 to 6

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

 

7

ILLON

O

 

Power on/off control signal output of the illumination LED and liquid crystal display driver

 

(IC901)

“H”: power on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

VCC

 

Power supply terminal (+5V)

 

 

9

E2P SIO

I/O

 

Two-way data E2P bus with the FM/AM tuner unit (TU1)

 

 

 

 

 

 

 

 

 

 

 

10

E2P CKO

O

 

E2P bus clock signal output to the FM/AM tuner unit (TU1)

 

 

 

 

 

 

 

 

 

 

11

SYSRST

O

 

System reset signal output to the MD mechanism controller (IC501) and SONY bus interface

 

(IC701)

“L”: reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

DOORSW

I

 

Front panel open/close detection signal input terminal

 

 

 

“L” is input when the front panel is closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

LCDSO

O

 

Serial data output to the liquid crystal display driver (IC901)

 

 

14

LCDCKO

O

 

Serial data transfer clock signal output to the liquid crystal display driver (IC901)

 

 

 

 

 

 

 

 

15

LCDCE

O

 

Chip enable signal output to the liquid crystal display driver (IC901)

“H” active

 

 

 

 

 

 

 

 

 

16

 

BEEP

O

 

Beep sound drive signal output to the power amplifier (IC611)

 

 

 

 

 

 

 

 

 

 

 

17

 

UNISI

I

 

Serial data input from the SONY bus interface (IC701)

 

 

 

 

 

 

 

 

 

 

18

UNISO

O

 

Serial data output to the SONY bus interface (IC701)

 

 

19

UNICKO

O

 

Serial clock signal output to the MD mechanism controller (IC501) and SONY bus interface

 

(IC701)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

UNICKI

I

 

Serial clock signal input from the MD mechanism controller (IC501) (for SONY bus)

 

 

 

 

 

 

 

 

 

21

CD MD

I

 

Setting terminal for the internal mechanism CD or MD

 

 

 

“L”: CD, “H”: MD (fixed at “H” in this set)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

FLASHW

I

 

Internal flash memory data write mode detection signal input terminal

“L”: data write mode

 

Not used

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

24

SIRCS

I

 

Sircs remote control signal input from the remote control receiver (IC951)

25 to 28

 

NCO

O

 

Not used (open)

 

 

29

DOORIND

O

 

LED drive signal output of the MD disc slot illumination and Z indicator (LED810, LSW810)

 

“H”: LED on “H” is output to turn on LED when front panel is opened

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30, 31

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

32

NS MASK

O

 

Discharge control signal output for the noise detection circuit “H”: discharge

 

 

 

 

 

 

 

 

 

33

 

VSS

 

Ground terminal

 

 

 

 

 

 

 

 

 

 

 

34

 

C

 

Connected to coupling capacitor for the power supply

 

 

 

 

 

 

 

 

A/D converter power control signal output terminal

 

 

35

AD ON

O

 

When the KEYACK (pin uh) that controls reference voltage power for key A/D conversion input

 

 

 

 

 

 

is active, “L” is output from this terminal to enable the input

 

 

 

 

 

 

 

 

 

36

REIN0

I

 

 

 

 

 

Dial pulse input of the rotary encoder (RE901)

 

 

 

 

 

 

 

 

(for VOLUME/BASS/TREBLE/BALANCE/FADER control)

 

 

37

REIN1

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

38

DVCC

 

Power supply terminal (+5V) (for D/A converter)

 

 

39

 

DVSS

 

Ground terminal (for D/A converter)

 

 

40, 41

 

NCO

O

 

Not used (open)

 

 

42

AVCC

 

Power supply terminal (+5V) (for analog system)

 

 

 

 

 

 

 

 

 

 

 

 

46

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Sony MDX-C6500RX Buson, Illon, E2P SIO, E2P CKO, Sysrst, Doorsw, Lcdso, Lcdcko, Lcdce, Beep, Flashw, Sircs, NS Mask, REIN0

MDX-C6500R, MDX-C6500RX specifications

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