Avls Switch - Sony NW-S4 Service Manual

NW-S4
• MAIN BOARD IC801 HD6433800A02FP (CPU)
Pin No. Pin Name
1 IRQ1
2 X1
3 X2
4 VSS
5 OSC2
6 OSC1
7 TEST
8 RES
9 P31
10 P32
11 P33
12, 13 P34, P35
14 P36
15 P37
16 VCC
17 V1
18 V2
19 V3
20, 21 COM4, COM3
22, 23 COM2, COM1
24, 25 SEG25, SEG24
26 to 40 SEG23 to SEG9
41 WKP7
42 WKP6
43 WKP5
44 WKP4
45 WKP3
46 WKP2
47 WKP1
48 WKP0
49 P90
50 to 54 P91 to P95
55 VSS
56 IRQACE
57 SCK
58 RXD
59 TXD
60 IRQ0
61 AVCC
62 AN0
63, 64 PB1, PB2
24
I/O
I Voltage detect input terminal
I
Sub system clock input terminal (32.768kHz)
O
Sub system clock output terminal (32.768kHz)
— Ground terminal
O Main system clock output terminal (8MHz)
I Main system clock input terminal (8MHz)
I Test mode signal input terminal Not used (fixed at "L" )
System reset signal input from the reset signal generator (IC802)
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
—
Not used (open)
O Power supply (V2) ON/OFF control signal output terminal "L": ON
O Interrupt request signal output to the digital signal processor (IC601)
—
Not used (fixed at "L" )
Reset signal output to the digital signal processor (IC601) and EEPROM (IC603)
O
"L": reset
O Power supply (VCORE) ON/OFF control signal output terminal "L": ON
— Power supply terminal (+3.2V)
— Power supply terminal for the liquid crystal display (open in this set)
— Power supply terminal for the liquid crystal display (connected to pin ql (V3))
— Power supply terminal for the liquid crystal display (connected to pin qk (V2))
O Common signal output to the liquid crystal display Not used (open)
O Common signal output to the liquid crystal display (LCD901)
O Segment signal output to the liquid crystal display Not used (open)
O Segment signal output to the liquid crystal display (LCD901)
I USB connection detect signal input terminal
I AVLS switch (S807) input terminal "L": NORM
. key (S806) input terminal
I
I > key (S805) input terminal
Nx key (S804) input terminal
I
I SHIFT key (S803) input terminal
I VOL - key (S802) input terminal
I VOL + key (S801) input terminal
O LCD back light (D803 toD805) ON/OFF control signal output terminal "H": LED ON
—
Not used (open)
— Ground terminal
I Interrupt request signal input terminal Not used (fixed at "L" )
I Serial clock signal input from the digital signal processor (IC601)
I Serial data receive signal input from the digital signal processor (IC601)
O Serial data transmit signal output to the digital signal processor (IC601)
I Serial clock signal input from the digital signal processor (IC601)
— Power supply terminal (+3.2V) (for the analog)
I Battery voltage detect input terminal
I Not used (fixed at "L" )
Description
"L": reset