Service manual

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MD-R2
IC901 RH-iX0237AFZZ: System Control Microcomputer (IX0237AW) (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.
1* P77/AN7 KEY1 Output Not used
2 P76/AN6 KEY2 Input Key entry
3 P75/AN5 KEY3 Input Key entry
4* P74/AN4 — Output Not used
5 P73/AN3 INI Input Initial setting entry
6 P72/AN2 JOG_AD Input Jog dial entry
7*,8* P71/AN1,P70/AN0 — Output Not used
9* PB3 — Output Not used
10 PB2/DA DIG SEL1 Output Digital signal selector selection signal
11* P57/SRDY3/AN15 DIG SEL2 Output Not used
12* P56/SCLK3/AN14 — Output Not used
13* P55/SOUT3/AN13 — Output Not used
14 P54/SIN3/AN12 DAC_MODE Output Externally provided DAC/ADC serial interface mode signal
15 P52/SRDY2/AN11 DAC_CLK/EX Output Externally provided DAC/ADC serial interface clock signal
16 P52/SCLK2/AN10 DAC_DATA/EX Output Externally provided DAC/ADC serial interface clock signal
17* P51/SOUT2/AN9 — Output Not used
18 P50/SIN2/AN8 DFS0/DFS1 Input EMPHASIS information from MD
19 P67/SRDY1/CS/ DSTRB Input MD serial interface strobe signal
SCLK12
20 P66/SCLK1 DSCK Output MD serial interface clock signal
21 P65/SOUT1 K-DATA Output MD serial interface transmission signal
22 P64/SIN1 MD-DATA Input MD serial interface reception signal
23 P63/CNTR1 MD-LO/EJ Output MD loading power voltage selection signal
24* P62/CNTR0 — Output Not used
25* P61/PWM — Output Not used
26* P60 — Output Not used
27* P47/T3OUT — Output Not used
28* P46/T1OUT — Output Not used
29 P45/INT1/2CR P IN Input Power failure detection
30* P44/INT4 P.CNT Output Power control
31 P41 P-OUT Output MD power failure detection signal
32 P42/INT2 RX-IN Input Remote control loght reception signal
33 P41 P-MUTE Output Audio mute control signal
34 P40/INT0 — Input GND
35 RESET RESET Input RESET signal entry
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 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
65-72 P37/SEG31- S31-S25 Output Segment for FL drive
P30/SEG25