Sharp MD-X7H Service Manual page 118

MD-X8H
IC901 RH-iX2679AFZZ:System Control Micon(iX2679AF) (2/3)
Pin No. Terminal Name
33 TRAY SW-A
34 TRAY SW-B
35 TRAY SW-C
36 TRAY SW-D
37 —
38 MAIN CLK
39 MAIN CLK
40 —
41* Not used
42 Not used
43 RESET
44 RX IN
45 Power failure
detection
46 NAME IN
47 DATA IN/OUT
48 CLK IN/OUT
49 PROTECT
50 DSTB
51 —
52 —
53 KEY0
54 KEY1
55 KEY2
56 KEY3
57 Spare
58 Initial setting
59 SPAN selection
60 VSM
61 —
62 SD
63 Illumination ON/ P131
OFF switching
64 Not used
65 232C-IN
66 232C-OUT
67 V. LOAD
68 M-DATA
69 K-DATA
70 DSCK
71 MIC detection
72 RWC
73 SQOUT
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Port Name Input/Output
P124 Input
P125 Input
P126 Input
P127 Input
VDD —
X2 —
X1 Input
VSS —
XT2 —
XT1 Input
RESET Input
INTP0 Input
INTP1 Input
INTP2 Input
INTP3 Input/Output
INTP4 Input/Output
INTP5 Input
INTP6 Input
AVDD —
AVREFO Input
AN10 Input
AN11 Input
AN12 Input
AN13 Input
AN14 Input
AN15 Input
P16 Input
AN17 Input
AVSS —
P130 Input
Output
AVREF1 Input
RXD2 Input
TXD2 Output
P72 Output
SI1 Input
SO1 Output
SCK1 Output
P23 Input
P24 Output
SI0 Input
Main tray OPEN completion detection switch input
H: OPEN completion state when SW is OFF.
L: Other state when SW is ON. This switch provides the CLOSE function
when the tray lid is pressed.
Main tray CLOSE completion detection switch input
L: CLOSE completion state when SW is ON
H: Other state when SW is OFF
Sub-tray placing completion detection switch input
L: Placing completion state when SW is ON
H: Other state when SW is OFF.
Sub-tray SET completion detection switch input
H: SET completion state when SW is OFF
L: Other state when SW is ON.
To be connected to ADD
16 MHz crystal
16 MHz crystal
Ground potential To be connected to VSS
SUB CLK not used To be opened
SUB CLK not used To be connected to VSS
Reset input
Remote controller input
Power failure detection input Power failure = L
TEXT input from external MD
Data input/output from and to keyboard
Clock input/output from and to keyboard
Power amplifier stage abnormality detection input Abnormal state = 1
Strobe input from MD microcomputer Interruption input
A/D converter analog power To be connected to VDD
A/D converter reference voltage input Wiring separately from VDD
A/D input of key - 0
A/D input of key - 1
A/D input of key - 2
A/D input of key - 3
To be connected to VSS
Destination setting with A/D value
Tuner span selection
Input of electric field intensity in RDS ASPM state by using A/D value
A/D converter ground potential To be connected to VSS
SD input in case of TUNER AUTO SCAN
Illumination in ON state: H output
Illumination in OFF state: L output
D/A converter reference voltage input To be connected to VDD
Serial data input in UART mode
Data operation from external personal computer through PC card
Serial data output in UART mode
Data sending from external personal computer through PC card
Selection of 7.5V/5V line voltage supplied to MD
H is set to set the 7.5V line only when MD is set to LOAD or EJECT mode.
Serial data input from MD microcomputer
Serial data output to MD microcomputer
Serial clock output to MD microcomputer
MIC jack insertion detection input
READ/WRITE control output to CD DSP element
Serial input of sub-code data Q from CD DSP
– 82 –
Function
L: MIC connected, H: Not connected