Read Sony ICD-MS1 Service Manual online
– 39 –
5-7.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC722 HD64F7198RVBP16 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
XEPCS
O
Chip select signal output to the EEPROM (IC723) “L” active
2
XLCDCS
O
Chip select signal output to the liquid crystal display module (LCD720) “L” active
3
VCC
—
Power supply terminal (+3.3V)
4
PA23
O
Not used (open)
5
SRCS
O
Chip enable signal output to the static RAM (IC727) “L” active
6
PA21
O
Not used (open)
7
PA20
O
Not used (open)
8
VSS
—
Ground terminal
9
MSINS
I
Memory stick insert detection signal input terminal
“L”: memory stick in, “H”: memory stick out
“L”: memory stick in, “H”: memory stick out
10
XRD
O
Output enable signal output to the static RAM (IC727) “L” active
11
MSBS
O
Serial bus state signal output to the memory stick
12
MSDIO
I/O
Serial data input/output with the memory stick
13
MSCLK
O
Serial clock signal output to the memory stick
14
XUB
O
Data bite control signal output to the static RAM (IC727) “L” active
15
XLB
O
Data bite control signal output to the static RAM (IC727) “L” active
16
XWAIT
I
Not used (open)
17
RTCCE
O
Chip enable signal output to the real time clock (IC721) “H” active
18
PA4
O
Not used (open)
19
PA0
O
Not used (open)
20
DSPTX
O
Playback serial data output to the ADPCM (IC164)
21
DSPRX
I
Recording serial data input from the ADPCM (IC164)
22
VCC
—
Power supply terminal (+3.3V)
23
VSS
—
Ground terminal
24
LCDDO
O
Serial data output to the liquid crystal display module (LCD720)
25
LCDDI
I
Serial data input from the liquid crystal display module (LCD720)
26
VSS
—
Ground terminal
27
VCC
—
Power supply terminal (+3.3V)
28
PB17
O
Not used (open)
29
PB16
O
Not used (open)
30
RDWR
O
Read/write data output to the static RAM (IC727) “L”: write data , “H”: read data
31
WAKEMSK2
O
X (R) sync control signal output terminal
32
WAKEMSK
O
X (R) sync control signal output terminal
33
VSS
—
Ground terminal
34
KEYCTL3
O
Key send signal output to the key matrix Not used (open)
35 to 37
KEYCTL2 to
KEYCTL0
O
Key send signal output to the key matrix
38
MICPOW
O
Power supply on/off control signal output to the mic amplifier (IC161)
“H”: power on (rec mode)
“H”: power on (rec mode)
39
VCC
—
Power supply terminal (+3.3V)
40
AMPOW
O
Power supply on/off control signal output to the power amplifier (IC168) “H”: power on
41
SPOWER
O
Power supply on/off control signal output to the ADPCM (IC164) “H”: power on
42
MSPOW
O
Power supply on/off control signal output to the memory stick “H”: power on
43
VSS
—
Ground terminal
44 to 50
A17 to A11
O
Address signal output to the static RAM (IC727)
51
VSS
—
Ground terminal
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