Sony NW-S21 / NW-S23 Service Manual ▷ View online
17
NW-S21/S23
•
IC Pin Function Description
MAIN BOARD IC400 CXR704060-201GA (SYSTEM CONTROLLER, D/A CONVERTER)
Pin No.
Pin Name
I/O
Description
1
VDIO0
—
Power supply terminal (+2.8V) (for I/O interface)
2 to 9
A12 to A19
O
Address signal output to the NOR flash memory/S-RAM
10 to 13
PN4 to PN7
I
Not used
14
DVSS7
—
Ground terminal
15 to 22
FAD0 to FAD7
I/O
Two-way data bus with the NAND flash memory
23
FCLE
O
Command latch enable signal output to the NAND flash memory
24
FALE
O
Address latch enable signal output to the NAND flash memory
25
VDIODF
—
Power supply terminal (+2.8V) (for internal flash memory interface)
26
XFWE
O
Write signal output to the NAND flash memory
27
XFRE
O
Read signal output to the NAND flash memory
28
XFWP
O
Write protect signal output to the NAND flash memory
29
XFCE0
O
Chip enable signal output to the NAND flash memory
30
FRB0
I
Ready/busy selection signal input from the NAND flash memory “L”: busy, “H”: ready
31
XFCE1
O
Chip enable signal output terminal Not used
32
FRB1
I
Ready/busy selection signal input terminal Not used
33, 34
PP0, PR1
I
Not used
35
DVDD0
—
Power supply terminal (+1.2V)
36
DVSS1
—
Ground terminal
37
VDIO1
—
Power supply terminal (+2.8V) (for I/O interface)
38 to 53
D0 to D15
I/O
Two-way data bus with the NOR flash memory/S-RAM
54 to 56
PA0 to PA2
I
Not used
57
XSCK0
O
Serial clock signal output to the liquid crystal display unit
58
SO0
O
Serial data output to the liquid crystal display unit
59
PC2
O
Power on/off control signal output terminal “H”: power on
60
XSCS0
O
Chip select signal output to the liquid crystal display unit
61
DVSS2
—
Ground terminal
62
VDIO2
—
Power supply terminal (+2.8V) (for I/O interface)
63
KDI
I
Serial data input terminal Not used
64
KRB
I
Ready/busy selection signal input terminal Not used
65
KCLK
O
Serial clock signal output terminal Not used
66
KCS
O
Chip select signal output terminal Not used
67
KDO
O
Serial data output terminal Not used
68
TRST
I
Reset signal input terminal for scan test Not used
69
TXD0
O
Transmit data output terminal Not used
70
RXD0
I
Receive data input terminal Not used
71
TXD1
O
Transmit data output terminal Not used
72
RXD1
I
Receive data input terminal Not used
73
XSCK1
O
Serial clock signal output to the real time clock
74
SO1
O
Serial data output to the real time clock
75
SI1
I
Serial data input from the real time clock
76
XSCS1
O
Chip select signal output to the real time clock
77
XOUT
O
Main oscillation output terminal Not used
78
DVDD1
—
Power supply terminal (+1.2V)
79
DVSS3
—
Ground terminal
80
VDIO3
—
Power supply terminal (+2.8V) (for I/O interface)
18
NW-S21/S23
Pin No.
Pin Name
I/O
Description
81
INT3
I
GROUP key input terminal
82
PF1
I/O
Not used
83
INT4
I
Play/stop key input terminal
84
PF3
O
Muting on/off control signal output to the headphone amplifier “L”: muting on
85
BEEP
O
Beep signal output terminal
86
PG0
I/O
Not used
87
INT5
I
HOLD key input terminal “L”: hold on
88, 89
PG2, PG3
I/O
Not used
90 to 93
TEST2, TEST3,
TEST0, TEST1
I
Input terminal for the test mode setting Not used
94
TACK
O
Bus response signal output terminal Not used
95
EVA
I
EVA/flash mode selection signal input terminal Not used
96
AVSAD
—
Ground terminal (for A/D converter)
97
AVDAD
—
Power supply terminal (+2.3V) (for A/D converter)
98 to 101
AN0 to AN3
I
Analog signal input terminal Not used
102, 103
AN4, AN5
I
Key input terminal (A/D input)
104, 105
INT8, INT9
I
Key wake up signal input terminal
106
XRST
I
System reset signal input terminal “L”: reset
107
RAMBK
I
RAM back up control signal input terminal Not used
108
VDBK
—
Power supply terminal (+1.2V) (for RAM back up)
109
TDI
I
Serial data input terminal (for JTAG) Not used
110
TMS
I
Test mode control signal input terminal (for JTAG) Not used
111
TCK
I
Serial clock signal input terminal (for JTAG) Not used
112
TRST
I
Reset signal input terminal (for JTAG) Not used
113
TDO
O
Serial data output terminal (for JTAG) Not used
114
VDIOJT
—
Power supply terminal (+2.8V) (for JTAG)
115
DVDD2
—
Power supply terminal (+1.2V)
116
DVSS4
—
Ground terminal
117
VDIO4
—
Power supply terminal (+2.8V) (for I/O interface)
118 to 125
PD0 to PD7
I/O
Not used
126
VBUS
I
USB power signal (USB connect detection signal) input from the USB connector
127
VDIOUS
—
Power supply terminal (+3.3V) (for USB transceiver)
128
UDM
I/O
USB data (–) input/output terminal
129
UDP
I/O
USB data (+) input/output terminal
130
TRON
O
UDP pull up resistor connect control signal output terminal
131
AVSDA
—
Ground terminal (for internal D/A converter)
132
VREFER
O
Reference voltage output terminal (R-ch)
133
AOUTR
O
Analog audio signal output to the headphone amplifier (R-ch)
134
AOUTL
O
Analog audio signal output to the headphone amplifier (L-ch)
135
VREFL
O
Reference voltage output terminal (L-ch)
136
AVDDA
—
Power supply terminal (+2.3V) (for internal D/A converter)
137
XTAL
O
Main system clock output terminal (22.5792 MHz)
138
EXTAL
I
Main system clock input terminal (22.5792 MHz)
139
AVDMO
—
Power supply terminal (+2.3V) (for main system clock oscillator)
140
AVSOSC
—
Ground terminal (for main and sub system clock oscillator)
141
TX
O
Sub system clock output terminal (20 MHz)
142
ETX
I
Sub system clock input terminal (20 MHz)
19
NW-S21/S23
Pin No.
Pin Name
I/O
Description
143
AVDUO
—
Power supply terminal (+2.8V) (for sub system clock oscillator)
144
AVSPLL
—
Ground terminal (for PLL)
145
AVDPLL
—
Power supply terminal (+2.8V) (for PLL analog system)
146 to 153
PQ0 to PQ7
I/O
Not used
154
DVSS8
—
Ground terminal
155
VDIO7
—
Power supply terminal (+2.8V) (for I/O interface)
156
PR0
O
Address signal output to the liquid crystal display unit
157 to 159
PR1 to PR3
I/O
Not used
160
PR4
O
Liquid crystal display back light on/off control signal output to the EL driver
“H”: back light on
“H”: back light on
161 to 163
PR5 to PR7
I/O
Not used
164
DVSS9
—
Ground terminal
165
VDIOMS
—
Power supply terminal (+2.8V) (for memory stick interface)
166
MSDIO
I/O
Two-way data bus with the memory stick interface Not used
167
MSBS
O
Bus state signal output to the memory stick interface Not used
168
MSSCLK
O
Serial clock signal output to the memory stick interface Not used
169
XMSINS
I
Card detection signal input from the memory stick interface Not used
170, 171
PI7, PI0
I/O
Not used
172
PI1
O
LED drive signal output of the ACCESS indicator “H”: LED on
173
PI2
O
Liquid crystal display back light on/off control signal output to the EL driver
“H”: back light on
“H”: back light on
174
PI3
O
Power on/off control signal output for NAND flash memory “H”: power on
175
PI4
I/O
Not used
176
PI5
O
Reset signal output to the liquid crystal display unit “L”: reset
177
PI6
I
Not used
178
DVDD3
—
Power supply terminal (+1.2V)
179
DVSS5
—
Ground terminal
180
VDIO5
—
Power supply terminal (+2.8V) (for I/O interface)
181
PJ0
I/O
Not used
182
XRE
O
Read signal output to the NOR flash memory/S-RAM
183
XLB
O
Lower byte access strobe signal output to the NOR flash memory/S-RAM
184
XUB
O
Upper byte access strobe signal output to the NOR flash memory/S-RAM
185
XWE
O
Write signal output to the NOR flash memory/S-RAM
186
XCS0
O
Chip select signal output to the NOR flash memory
187
XCS1
O
Chip select signal output to the S-RAM
188
XBOOT
I
Boot mode selection signal input terminal Not used
189
XMS/SIO
I
Boot source selection signal input terminal Not used
190 to 193
PK4 to PK7
I/O
Not used
194
DVSS6
—
Ground terminal
195
VDIO6
—
Power supply terminal (+2.8V) (for I/O interface)
196 to 207
A0 to A11
O
Address signal output to the NOR flash memory/S-RAM
208
DVSS0
—
Ground terminal
20
NW-S21/S23
SECTION 6
EXPLODED VIEW
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
2-186-988-01 KNOB (HOLD)
2
2-186-979-01 BUTTON (MENU)
3
2-348-130-01 SCREW (1.6X8)
4
3-326-560-21 RING (DIA. 2.5XDIA. 4.5), O
5
2-186-989-01 LEVER (HOLD)
6
3-318-201-81 SCREW (B) (1.4X8), TAPPING
7
2-187-116-01 BUTTON (PLAY/STOP)
8
2-186-994-01 COVER (PLAY/STOP)
9
3-318-382-91 SCREW (1.7X2.5), TAPPING
10
3-669-481-06 PIN (DIA 1X6), PARALLEL
11
3-247-180-01 SCREW (1.4X3)
12
2-546-558-01 SPACER (BATTERY)
13
2-188-392-01 ATTACHMENT (CASE)
14
2-548-411-01 SHEET (CAP), ADHESIVE
16
X-2048-940-1 CASE (REAR (SERVICE)) SUB ASSY
17
2-345-263-01 SHEET (COVER P/S), ADHESIVE
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Accessories are given in the last of the
electrical parts list.
electrical parts list.
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
3
4
1
2
14
3
5
6
9
8
7
13
16
12
10
17
11
case (front) block
6-1.
CASE (FRONT) BLOCK
Click on the first or last page to see other NW-S21 / NW-S23 service manuals if exist.