Read Sony NW-S4 Service Manual online
22
NW-S4
Pin No.
Pin Name
I/O
Description
51
HINT
O
Interrupt request signal output terminal Not used (open)
52
CVDD
—
Power supply terminal (+1.5V)
53
BFSX0
O
LR frame signal output to the D/A converter (IC302)
54
BFSX2
O
Chip select signal output to the EEPROM (IC603)
55
HRDY
O
Ready signal output terminal Not used (open)
56
DVDD
—
Power supply terminal (+3.2V)
57
DVSS
—
Ground terminal
58
HD0
O
Enable signal output to the flash ROM (IC602)
59
BDX0
O
Serial data transmit signal output to the D/A converter (IC302)
60
BDX2
O
Serial data transmit signal output to the EEPROM (IC603) and CPU (IC801)
61
IACK
O
Interrupt request signal output terminal Not used (open)
62
HBIL
—
Not used (fixed at “H”)
63
NMI
I
Nonmaskable interrupt request signal input terminal Not used (fixed at “H”)
64
INT0
I
Interrupt request signal input terminal Not used (fixed at “H”)
65
INT1
I
Interrupt request signal input from the CPU (IC801)
66
INT2
I
Interrupt request signal input from the USB controller (IC901)
67
INT3
I
Interrupt request signal input terminal (connected to pin y; (BDX2))
68
CVDD
—
Power supply terminal (+1.5V)
69
HD1
O
Enable signal output to the flash ROM (IC602)
70
CVSS
—
Ground terminal
71
BCLKX1
O
Serial clock signal output to the D/A converter (IC302)
72
DVSS
—
Ground terminal
73
BFSX1
O
Serial data receive signal output terminal Not used (fixed at “H”)
74
BDX1
O
Serial data transmit signal output terminal Not used (open)
75
DVDD
—
Power supply terminal (+3.2V)
76
DVSS
—
Ground terminal
77
CLKMD1
I
Clock mode signal output terminal Not used (fixed at “L”)
78
CLKMD2
I
Clock mode signal output terminal Not used (fixed at “H”)
79
CLKMD3
I
Clock mode signal output terminal Not used (fixed at “L”)
80
HPI16
—
Not used (fixed at “L”)
81
HD2
O
Reset signal output to the USB controller (IC901) “L”: reset
82
TOUT
O
Timer signal output terminal Not used (open)
83
EMU0
I
Emulator signal input terminal Not used (open)
84
EMU1/OFF
O
Emulator signal output terminal Not used (open)
85
TDO
O
Test data signal output terminal Not used (open)
86
TDI
I
Test data signal input terminal Not used (open)
87
TRST
I
Test reset signal input terminal Not used (open)
88
TCK
I
Test clock input terminal Not used (open)
89
TMS
I
Test mode select signal input terminal Not used (open)
90
CVSS
—
Ground terminal
91
CVDD
—
Power supply terminal (+1.5V)
92
HPIENA
I
HPI module select signal input terminal Not used (fixed at “L”)
93
DVSS
—
Ground terminal
94
CLKOUT
O
Master clock output terminal Not used (open)
95
HD3
O
USB ON/OFF control signal output terminal “L”: ON
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