Sony SB-V55A, Руководство по обслуживанию

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5 5
SB-V55A
3-1. IC PIN DESCRIPTION
• IC5 M34513 (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 D3 O Output port (LED (D5) light signal output in this set.)
2 D4 O Output port (LED (D6) light signal output in this set.)
3 D5 O Output port (LED (D7) light signal output in this set.)
4 D6/CNTR0 I/O
Clock signal input for event counter and two frequency division signal output of
under flow
5 D7/CNTR1 I/O
Clock signal input for event counter and two frequency division signal output of
under flow
6 P20/SCK I/O Serial clock signal input/output (Connect to ground in this set.)
7 P21/SOUT O Serial data signal output (Connect to ground in this set.)
8 P22/SIN I Serial data signal input (Connect to ground in this set.)
9 RESET I Reset signal input
10 CNVSS — Ground pin
11 XOUT O System clock signal output (4 MHz)
12 XIN I System clock signal input (4 MHz)
13 VSS — Ground pin
14 VDD — Power supply pin
15 VDCE I
Voltage down detection signal input (“H”: operate, “L”: stop)
(Connect to ground in this set.)
16 P30/INT0 I/O Input/output port and interruption signal input
17 P31/INT1 I/O Input/output port and interruption signal input (Not used in this set.)
18 AIN0/CMP0– I
A-D convert analog signal input and voltage comparator signal input
(Connect to ground in this set.)
19 AIN1/CMP0+ I
A-D convert analog signal input and voltage comparator signal input
(Connect to ground in this set.)
20 AIN2/CMP1– I
A-D convert analog signal input and voltage comparator signal input
(Connect to ground in this set.)
21 AIN3/CMP1+ I
A-D convert analog signal input and voltage comparator signal input
(Connect to ground in this set.)
22 P00 I Input port (Signal input of SW1 in this set.)
23 P01 I Input port (Signal input of SW2 in this set.)
24 P02 I Input port (Signal input of SW3 in this set.)
25 P03 I Input port (Signal input of SW4 in this set.)
26 P10 I Input port (Signal input of SW5 in this set.)
27 P11 I Input port (SYNC.DET signal input in this set.)
28 P12 I/O Input/output port (Not used in this set.)
29 P13 O Output port (LED drive selection signal output to Q6 in this set.)
30 D0 O Output port (LED drive selection signal output to Q5 in this set.)
31 D1 O Output port (LED (D3) light signal output in this set.)
32 D2 O Output port (LED (D4) light signal output in this set.)
SECTION 3
DIAGRAMS