Sony HCD-DX400, Руководство по обслуживанию, Страница: 22 / 28

HCD-DX400
22
Pin No. Pin Name I/O Description
1 to 4 SW1 to SW4 I General purpose input pins, Not used
5 DOUT O Data output Pin
6 DIN I Data input Pin
7 NC - Not used
8 CLK I Clock input Pin
9 STB I Serial interface strobe Pin
10 to 13 K1 to K4 I Key data input Pins
14 VDD - Logic power supply
15 to 17
SG1/KS1 to
SG11/KS3
O High-Voltage Segment output Pins, Also acts as the Key source
18 to 29
SG4/KS4 to
SG11/KS11
O High-Voltage Segment output Pins
30 SG16 O High-Voltage Segment output Pins, Not used
31, 32
SG17/GR12,
SG18/GR11
O Grid output Pins
33 VDD - Power supply
34 VEE - Pull-Down Level
35, 36
SG19/GR10,
SG20/GR9
O Grid output Pins
37 to 40 GR8 to GR5 O Grid output Pins
41 to 44 GR4 to GR1 O Grid output Pins, Not used
45 VDD - Logic power supply
46 to 50 LED5 to LED1 O LED output Pin, Not used
51 GND - Ground
52 OSC1 I Oscillator input Pin
PANEL BOARD IC1 PT6311 (VFD Driver, Key Scanning)