Sharp CD-C290X Service Manual page 42

CD-C290X
IC701 RH-iX0191AWZZ:System Microcomputer (IX0191AW) (1/2)
Pin No. Port Name
1-7 FIP6-0 FL DRIVER
8 VDD VDD
9 P27 TAPE BIAS
10 P26 TAPE REC
11 P25 T1/T2
12 P24 CD DSP WRQ
13 P23 CD DSP RWC
14 SCK1 CD DSP CQCK
15 SO1 CD DSP COIN
16 SI1 CD DSP SQOUT
17 RESET RESET
18 P74 CD DSP RES
19 P73 CD T/T OPEN/CLOSE
20 AVSS AVSS
21 ANI7 CD UP/DOWN
CD DISC NO
22 ANI6 T2 RUN PLSE
23* ANI5 L-CH CHECK
24* ANI4 R-CH CHECK
25 ANI3 KEY INPUT 3
26 ANI2 KEY INPUT 2
27 ANI1 KEY INPUT 1
28 ANI0 Initial setting input
29 AVDD AVDD
30 AVREF AVREF
31 P04 SRS
32* XT2 —
33 VSS VSS
34 X1 X1
35 X2 X2
36 P37 C
37 P36 C
38 P35 C
39 P34 C
40 P33 CD DRF
41 P32 CD PUIN
42 P31 CD SL+
43 P30 CD SL-
44 P03 POWER
45 P02 TUNER SD
46 INPT1 SYSTEM STOP
47 INPT0 REMOCON
48 IC INTERNALLY
CONECTED
49* P72 P.B MUTE
50 P71 TAPE SOL.
51 P70 TAPE MOTOR
52 VDD VDD
53 P127 MIC MUTE
54* P126 VOL.0 MUTE
55 P125 TAPE F.P.
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name Input/Output
Output
—
Output
Output
Output
Input
Output
Output
Output
Input
Input
Outout
Input
—
Intput
Input
Input/Output
Input/Output
Input
Input
Input
Input
—
—
Input
—
—
Input
Output
2
B CL Output
2 B CE Output
2
B DI Output
2 B DO Input
Input
Input
Output
Output
Output
Input
Input
Input
—
Output
Output
Output
—
Input
Output
Input
Segment Output
Connect with BACK UP VDD
TAPE BIAS ON: H
TAPE REC. ON:L
TAPE2 PLAY:L
CD DSP Write request
CD DSP Read write control
CD DSP Clock
CD DSP Comand
CD DSP Code Q out
Reset Input: L
CD Dsplay Reset
CD Turntable open close
Connect with GND
CD mecha up/down CD disc no
TAPE2 Run pulse
For TEST mode
For TEST mode
Key input 3
Key input 2
Key input 1
Initial setting input
Connect with BACK UP VDD
Connect with UNBACK UP VDD
SRS provided/not provided
Not connect
Connect with GND
MAIN CLOCK 4.19MHz
MAIN CLOCK 4.19NHz
2
C B Bus clock
C 2 B Bus chip enable
2
C B Bus comand
C 2 B Bus data
Data read flug from DSP.
L: Innermost periphery
CD PICKUP Slide motor control.
CD PICKUP Slide motor control.
POWER ON: H
Tuner SD Signal
System Stop Signal
Remote Control Code Input
Connect with GND
P.B MUTE ON: H
TAPE SOL. ON: L
TAPE MOTOR ON: L
Connect with BACK UP VDD
MIC MUTE: L
CD STOP, TAPE STOP state: Mute cancel
VOL.0 MUTE
TAPE FOOL PROOF
– 42 –
Function
REC: L