Sony Walkman NW-MS6, Руководство по обслуживанию

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31
NW-MS6
5-12. IC PIN FUNCTION DESCRIPTION
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MAIN BOARD IC7001 CXD9534BGG (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 to 7 D6 to D0 I/O
Two-way data bus with the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
(IC8000)
8 VDDIO1 — Power supply terminal (+2.8V)
9 VSSIO1 —
Ground terminal
10 to 18 A18 to A10 O
Address signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
(IC8000)
19 VDDIO1 —
Power supply terminal (+2.8V)
20 to 28 A9 to A1 O
Address signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
(IC8000)
29 A0 O
Address signal output terminal Not used (open)
30 VSSIO1 —
Ground terminal
31 VDDIO1 —
Power supply terminal (+2.8V)
32 MCLK O
Not used (open)
33 XRW O
Not used (open)
34, 35 MAS1, MAS0 O
Not used (open)
36 XOPC O
Not used (open)
37 XMREQ O
Not used (open)
38 VSSCORE —
Ground terminal
39 VDDCORE —
Power supply terminal (+1.8V)
40 XWAIT O
Not used (open)
41 XRSTOUT O
Reset signal output terminal “L”: reset Not used (open)
42, 43 BS1, BS0 O
Not used (open)
44 XOE O
Output enable signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
(IC8000) “L” active
45 XWE O
Write enable signal output to the flash memory (IC5000), S-RAM (IC5600) and CXD1859GA
(IC8000) “L” active
46 XUB O
Write enable signal output to the S-RAM (IC5600) (upper byte) “L” active
47 XLB O
Write enable signal output to the S-RAM (IC5600) (lower byte) “L” active
48 XCS1 O
Chip select signal output to the demultiplexer (IC5800)
49 XCS0 O
Chip select signal output to the flash memory (IC5000)
50 PWM3 O
Not used (open)
51 PWM2 O
Beep sound control signal output
52, 53 PWM1, PWM0 O
Not used (open)
54 VSSIO1 —
Ground terminal
55 to 59 GIOE7 to GIOE3 I
Key input from the console unit
60 RTC CS O
Chip select signal output to the RV5C348A (IC1001)
61 SAM RST O
Reset signal output to the CXD1859GA (IC8000)
62 HPBB1, 2 O
Bass boost level control signal output to the headphone amplifier (IC3200)
63 VDDIO1 —
Power supply terminal (+2.8V)
64 ATCRO O
System wake up signal output to the WAKE0 (pin
u;
)
65 VSSIO1 —
Ground terminal
66 WAKE4 I
System wake up signal from the reset signal generator (IC9007)
Input the signal, when inserts the rechargeable battery
67 WAKE3 I
System wake up signal from the CXD1859GA (IC8000) or voltage detector (IC9002)
Input the signal, when input the USB power
68 WAKE2 I
Interrupt request signal input from the CXD1859GA (IC8000)