ZS-X10 - Sony Audio Service Manual (repair manual). Page 33

33

Pin No.

Pin Name

I/O

Description

69

ICO

-

Not used

70

XT1

I

Sub system clock input terminal (32.768 kHz)

71

XT2

O

Sub system clock output terminal (32.768 kHz)

72

VDD

-

Power supply terminal (+3.3V)

73

VSS

-

Ground terminal

74

X1

I

Main system clock input terminal (4.19 MHz)

75

X2

O

Main system clock output terminal (4.19 MHz)

76

RST

I

System reset signal input from the reset signal generator    "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"

77

V-CLK

O

Serial data transfer clock signal output to the electrical volume

78

V-DATA

O

Serial data output to the electrical volume

79

SCL

O

Serial data transfer clock signal output to the EEPROM

80

SDA

I/O

Two-way data bus with the EEPROM