Arcam DiVA AVR250 - Main Board U102: P89 C669 FA; Main Board U103: 24 C08; Multi-Ch Board U406-U417: NJM5532 M; RS232 Board U204: MAX232 D

AVR250 SURROUND SOUND RECEIVER
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MAIN BOARD
U102: P89C669FA
MAIN BOARD
U103: 24C08
VCC
8
7
4
6
5
3
2
1
GND
WP
SCL
LOAD
LOAD INC
DATA WORD
ADDR/COUNTER
Y DEC
X DEC
R/W
COMP
SERIAL
CONTROL
LOGIC
EN
H.V. PUMP/TIMING
DATA RECOVERY
EEPROM
SERIAL MUX
D
OUT
/ACK
LOGIC
DEVICE
ADDRESS
COMPARATOR
START
STOP
LOGIC
SDA
A
2
A
1
A
0
D
IN
D
OUT
HIGH PERFORMANCE
80C51 CPU
96 kB
CODE FLASH
2 kB
DATA RAM
PORT 3
PORT 2
PORT 1 PORT 0
OSCILLATOR
CRYSTAL OR
RESONATOR
UART 0
BAUD RATE
GENERATOR
UART 1
TIMER 0 TIMER 1
WATCHDOG
TIMER
I
2
C
TIMER2
internal
bus
PCA
(PROGRAMMABLE
COUNTER ARRAY)
1OUTPUT A
2
A
INVERTING A
3NON INVERTING A
OUTPUT B
INVERTING B
NON INVERTING B4V-
8V+
7
6
5
-+
B
-+
MULTI-CH BOARD
U406-U417: NJM5532M
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
V
CC
GND
T1OUT
R1IN
C2+
C1-
V+
C1+
R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
V-
C2-
RS232 BOARD
U204: MAX232D