4-5
WRT-808A (U)
IC
Pin No. Signal Name I/O
Description
2
ALO
IN
Audio Level Indicator (Ref.)
3
—
IN
Setting Destination
4
AVss
—
Ground
5
—
—
Ground
7
X1
IN
Clock Input (32.768 kHz)
8
Vss1
—
Ground
9
Osc1
IN
Clock Input (4.0 MHz)
11
Vss2
—
Ground
12
RES
IN
Reset (L: reset)
13
—
—
Ground
14
—
—
Ground
15
—
—
Ground
17
—
—
Ground
18
—
—
Ground
19
IRQ0
—
Power supply (
+
5 V)
22
TV-1
IN
TV SW-1
23
TV-2
IN
TV SW-2
24
TV-4
IN
TV SW-4
25
TV-8
IN
TV SW-8
26
CH-1
IN
CH SW-1
27
CH-2
IN
CH SW-2
28
CH-4
IN
CH SW-4
29
CH-8
IN
CH SW-8
CPU Pin Description : IC501
HD6473644W
Pin No. Signal Name I/O
Description
38
TEST
IN
TEST (L: test)
42
Vcc
IN
Power supply (
+
5 V)
49
AFM
OUT
Audio Mute Cntrol (Mute on: H)
50
ID
—
—
51
LVD
OUT
Battery Alarm On/Off (On: H)
52
Poff
IN
Power off detection (Off: L)
54
LEDAR
OUT
Audio Peek Level Ind.
(Red On: L)
55
LEDAG
OUT
Audio Reference Level Ind.
(Green On: L)
56
LEDBT
OUT
Battery Ind. (Red On: L)
57
LED
OUT
Power Ind. (Green On: L)
59
—
—
Ground
64
CK
OUT
Clock for PLL
65
LAT
OUT
PLL latch
66
RFM
OUT
RF Mute Control (Mute on: H)
68
LD
IN
Lock detection for PLL (Lock: L)
70
DATA
OUT
Data for PLL
72
Avcc
IN
Power supply (
+
5 V)
73
APO
IN
Audio Level Indicator (Peek)
75
—
IN
Setting destination
76
—
IN
Setting destination
77
—
IN
Setting destination
78
BAT
IN
Battery detection
NC: 1, 6, 10, 16, 20, 21, 30 to 37, 39 to 41, 43 to 48, 53, 58,
60 to 63, 67, 69, 71, 74, 79, 80
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
V
CC
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
GND
GND
—TOP VIEW—