ICD-SX20, ICD-SX30, ICD-SX40 - Sony Audio Service Manual (repair manual). Page 30

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30
ICD-SX20/SX30/SX40
• IC7003  MB91F233LLGA-GE1 (CPU) (MAIN BOARD)
Pin No.
1
2
3 to 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 to 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49 to 74
75
76
77 to 82
83 to 86
87
88
89
90
91 to 94
95
96
97
98
99
100
101
I/O
O
O
I/O
O
O
I
O
O
O
O
I
O
O
O
O
O
O
O
I
I
I
I
I
I
I
O
O
O
I
I
I
I
I
O
O
I
O
O
O
Description
Serial clock output for DSP
Command latch enable signal output for FLASH
Data input/output to FLASH and USB
Chip enable signal output for FLASH
System clock control signal output for DSP
32KHz vibration terminal (input)
32KHz vibration terminal (input)
Internal logic backup voltage terminal
Ground terminal
Internal logic voltage terminal
Beep output
Write enable signal output for FLASH
Read enable signal output for FLASH
Address latch enable signal output for FLASH
Ready/Busy signal input from FLASH
Write protect signal output to FLASH
Address signal output to USB control
Chip select signal output to USB control
Read strobe signal output to USB control
Reset signal output to USB control
Low write strobe signal output to USB control
Chip enable signal output for FLASH (Not used)
Analog power supply
Reference voltage terminal
Ground (Analog) terminal
Battery voltage detect signal input
Key 0 A/D input
Key 1 A/D input
Directivity microphone switch signal input
Voice up switch signal input
DPC switch signal input
External microphone detect signal input
Headphone detect signal input
Ground terminal
Voltage terminal
LCD segment output terminal
Voltage terminal
Ground terminal
LCD segment output terminal
LCD common output terminal
Mode input terminal
Mode input terminal (fixed at “L”)
Mode input terminal (fixed at “L”)
CPU external reset signal input
LCD reference voltage terminal
FLASH overwrite RX
FLASH overwrite TX
FLASH power supply control signal output (L:ON)
Serial data input from RTC
Serial data output to RTC, ADC and DAC
Serial clock output to RTC, ADC and DAC
Chip select signal output  to RTC
Pin Name
DSPSCK
FLMCLE
DATA0 to 7
XFLMCS0
DSPSYSCK
X0A32k
X1A32k
VCC3BCK
VSS
VCC3LGC
BEEP
XFLMWE
XFLMRE
XFLMALE
FLMRB
XFLMWP
USBADR0 to 6
XUSBCS
XUSBRD
XUSBRST
XUSBLWR
XFLMCS1
AVCC
AVREF
AVSS
BATT
KEYIN0
KEYIN1
MICSEL
VUPSW
VUPDPC
XMICJACK
HPJACK
VSS
AVCC3IO
SEG0 to 25
DVCC
DVSS
SEG26 to 31
COM0 to 3
MOD2
MOD1
MOD0
XCPURST
LCDV0 to 3
RX
TX
XFLMPWR
AUSIN
AUSOT
AUSCK
RTCCS
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