Service manual

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MD-R3
1 P77/AN7-P75/AN5 KEY1-KEY3 Input Key input
4* P74/AN4 — Input Not used
5 P73/AN3 INI Input Initial setting read-in
6 P72/AN2 JOG_AD Input Jog dial read-in
7 P71/AN1 MLAS Output CD_SRV interface latch signal
8 P70/AN0 MCK Output CD_DSP serial interface clock signal
9 PB3 MLAD Output CD_DSP interface latch signal
10 PB2/DA MSD/DIG SEL Output Also used for CD_DSP serial interface command data/Q codes
and digital signal selector switching signals
11 P57/SRDY3/AN15 JP1 Output SRV_IC jump brake control signal for the CD
12 P56/SCLK3/AN14 PUIN Input CD pick-up position detection
13 P55/SOUT3/AN13 LOCKDRD Input Read-in the frame synchronous signal/disc rotary state signal
from the CD DSP
14 P54/SIN3/AN12 DAC_MODE Output External DAC/ADC serial interface mode signal
15 P53/SRDY2/AN11 DAC_CLK/EX_SCK Output Also used for the external DAC/ADC serial interface clock signal
and the serial/parallel IC serial interface clock signal
16 P52/SCLK2/AN10 DAC_DATA/EX_DATA Output Also used for the external DAC/ADC serial interface clock signal
and the serial/parallel IC serial interface data signal
17 P51/SOUT2/AN9 EX_LCK Output Also used for the serial/parallel IC serial interface latch signal
18 P50/SIN2/AN8 DFS0/DFS1 Input EMPHASIS information from the MD
19 P67/SRDY1/CS/ DSTRB Input Serial interface strobe signal for the MD
SCLK12
20 P66/SCLK1 DSCK Output Serial interface clock signal for the MD
21 P65/SOUT1 K-DATA Output Serial interface transmission data for the MD
22 P64/SIN1 MD-DATA Input Serial interface reception data for the MD
23 P63/CNTR1 MD-LO/EJ Output MD loading supply voltage switching signal
24 P62/CNTR0 D-OUT Input Track count signal/FSOK signal from the CD SRV_IC
25 P61/PWM CH CMND Output Serial interface transmission data for the CD changer
26 P60 CH DATA Input Serial interface reception data for the CD changer
27 P47/T3OUT CH RDY Input Serial interface ready signal for the CD changer
28 P46/T1OUT CH CLK Output Serial interface clock signal for the CD changer
29 P45/INT1/2CR P IN Input Power failure detection
30* P44/INT4 PCNT Output Power control signal
31 P43/INT3 P-OUT Output Power failure detection signal to the MD
32 P42/INT2 RX IN Input Remote control optical reception signal
33 P41 P-MUTE Output Audio mute control signal
34 P40/INT0 SBQS Input CD sub-code Q read-out interrupt signal
35 RESET RESET Input Read-in for the RESET signal
36 PB1/Xcin Xcin Input Sub clock IN connection (32.7k)
37 PB0/Xcout Xcout Output Sub clock OUT connection (32.7k)
38 Xin Xin Input Main clock IN connection (8M)
39 Xout Xout Output Main clock OUT connection (8M)
40 VSS VSS Input GND
41 P27 SERCH Output CD-to-MD SEARCH monitor signal
42 P26 LOAD Input MD loading detection
43 P25 S-ID Output CD-to-MD start ID signal
44 P24 MD RESET Output RESET signal to the MD
45-54 P23/DIG19- UDIG0-UDIG9 Output Digit for FL drive
P12/DIG10
55,56 P11/SEG41/DIG9, UDIG10,UDIG11 Output Digit for FL drive
P10/SEG40/DIG8
57-60 P07/SEG39/DIG7- UDIG12-UDIG15 Output Digit for FL drive
P04/SEG36/DIG4
61-64 P05/SEG35/DIG3- S35-S32 Output Segment for FL drive
P00/SEG33/DIG0
IC901 RH-iX0240AWZZ: System Control Microcomputer (IX0240AW) (1/2)
FUNCTION TABLE OF IC
Pin No.
FunctionPort Name
Input/Output
Terminal Name
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.