Onkyo TX-SR804, Service Manual

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1
2
3
4
8
7
6
5
Vcc
WP
SCL
SDA
A0
A1
A2
GND
2k Bit EEPROM Array
8bit
8bit
8bit
Address
Decorder
Slave word
address register Data
register
Control circuit
START STOP
ACK
High-voltage
generation circuit
Power voltage
detection
Q8506,Q8606: BR24L02FV-W(256x8 bit EEPROM)
Terminal
Vcc
GND
A0,A1,A2
SCL
SDA
WP
I/O
-
-
I
I
I/O
I
Function
Apply a power source.
Ground terminal
Slave address setting terminal
Serial clock input
Slave and word address.
Serial data input and output
Write protect terminal
BLOCK DIAGRAM AND PIN CONFIGURATION
TERMINAL DESCRIPTION
IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS -48
TX-SR804/804E