Onkyo TX-L55 Service Manual page 41

Q801:MPD780232GC-091-8BT(Sub-micro processor)
No. Symbol I/O Description
1 5V I Positive power supply (+5V)
2 GND I Ground pin
3 CLOCK I Oscillator connection pin
4 CLOCK O Oscillator connection pin
5 FARIC I Not used.
6 ~RESET I System reset pin
7 SUBCL I Transfer clock input pin from main
micro processor
8 SUBSI I Transfer data input pin from main
micro processor
9 SUBSO O
Data input pin to main micro processor
Transfer data ready input pin from main
10 SUBREQ O
micro processor
11 VOLA I Pulse signal input pin from rotary
encoder
12 VOLB I Pulse signal input pin from rotary
encoder
13 STLED I
STANDBY LED control pin
14 LED1
O INPUT UP LED control pin
15 ~IRIN I Not used.
16 LED2 I LISTENNING MODE LED control pin
17 LED3 O INPUT DOWN LED control pin
18 AVSS I Power supply pin for A/D converter
19 K3 I Key input pin 3
20 K2 I Key input pin 2
21 K1 I Key input pin 1
22 K0 I Key input pin 0
23 VSS I Ground pin
24 AVDD I Power supply pin for A/D converter
25 VDD I Positive power supply (+5V)
26 NC ---
Not used.
--- Not used.
27 NC
O
28 P35 Segment output pin P35
29 P34 O Segment output pin P34
30 P33 Segment output pin P33
O
31 P32 Segment output pin P32
O
32 P31 O Segment output pin P31
33 P30 Segment output pin P30
O
34 P29 Segment output pin P29
O
35 P28 Segment output pin P28
O
36 P27 Segment output pin P27
O
37 P26 O Segment output pin P26
38 P25 O Segment output pin P25
39 P24 O Segment output pin P24
40 P23 O Segment output pin P23
No. Symbol I/O Description
41 P22 O Segment output pin P22
O
42 P21 Segment output pin P21
O
43 P20 Segment output pin P20
O
44 P19 Segment output pin P19
45 P18 O Segment output pin P18
46 P17 O Segment output pin P17
47 P16 O Segment output pin P16
48 P15 O Segment output pin P15
O
49 P14 Segment output pin P14
50 P13 Segment output pin P13
O
51 P12 O Segment output pin P12
O
52 P11 Segment output pin P11
53 P10 O Segment output pin P10
O
54 P9 Segment output pin P9
O
55 P8 Segment output pin P8
56 P7 O Segment output pin P7
O
57 P6 Segment output pin P6
58 P5 O Segment output pin P5
59 VDD2 I Positive power supply (+5V)
Negative power supply
60 VDISP I
61 P4 O Segment output pin P4
62 P3 Segment output pin P3
O
O
63 P2 Segment output pin P2
64 P1 Segment output pin P1
O
65 P36 O Segment output pin P36
66 NC Not used.
O
67 14G O Grid output pin 14G
O
68 13G Grid output pin 13G
69 12G O Grid output pin 12G
70 11G O Grid output pin 11G
71 10G O Grid output pin 10G
O
72 9G Grid output pin 9G
73 8G Grid output pin 8G
O
74 7G Grid output pin 7G
O
75 6G O Grid output pin 6G
76 5G Grid output pin 5G
O
77 4G O Grid output pin 4G
O
78 3G Grid output pin 3G
79 2G Grid output pin 2G
O
80 1G Grid output pin 1G
O
TX-L55/LR552