Denon AVR-550SD

16
AVR-550SD
M66005FP (FRONT: IC901)
14
15
16
CGROM
(35bit x 160)
CGRAM
(35bit x 16)
code
write
data
dot data
write
code
select
timing
clock
59
33
31
24
64
63
62
61
DIG12/
SEG36
DIG13/
SEG37
DIG14/
SEG38
DIG15/
SEG39
SEG00
SEG26
.
.
.
SEG27
SEG34
.
.
.
.
.
.
.
.
.
12
1
DIG00
DIG11
.
.
.
.
.
.
scan pulse
CS
SCK
SDATA
21
20
XIN
XOUT
13
RESET
BLOCK DIAGRAM
.
.
.
.
.
.
.
.
.
18
17
2
P0
P1
19
60
22
32
Vcc1
Vcc2
Vss
V
p
Serial
receive
circuit
Code/
command
control
circuit
Bank 1 : 8bit x 16
Bank 2 : 8bit x 64
Display code RAM
Segment
output
circuit
Segment/
Digit
select/
output
circuit
Digit
output
circuit
Clock
generator
Display
controller
23
SEG35
..
.
.
.
.
.
.
.
.