42
KEH-P4800,P4850
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Pin Functions(PD4973A)
Pin No.
Pin Name
I/O
Format
Function and Operation
1
ASENBO
O
C
Slave power supply control output
2
NC
Not used
3
ADPW
O
C
A/D converter power output
4
AVSS
GND
5
swvdd
O
C
Grille power supply control output
6
st
I
FM stereo input
7
AVREF1
D/A converter standard voltage
8
KYDT
I
Grille MicroComputer data input
9
DPDT
O
C
Grille MicroComputer data output
10
NC
Not used
11
TUNPDI
I
PLL IC data input
12
TUNPDO
O
C
PLL IC data output
13
TUNPCK
O
C
PLL IC clock output
14
TUNPCE
O
C
PLL IC chip enable output
15,16
NC
Not used
17
TX
O
C
IP BUS data output
18,19
NC
Not used
20
DIMMER
O
C
Dimmer select output
21
DRELAY
O
C
Detach alarm relay output
22
VST
O
C
Strobe pulse output for electronic volume
23
VCK
O
C
Clock output for electronic volume
24
VDT
O
C
Data output for electronic volume
25
LCDPW
O
C
LCD back light power supply control output
26
ILMPW
O
C
Illumination power supply control output
27
DRSENS
I
Door open/close sense input
28
DRSYS
O
C
Door system select output
29
FM
O
C
FM power control output
30
AM
O
C
AM power control output
31
CM
O
C
Cassette mechanism capstan motor control output
32
NC
Not used
33
VSS
GND
34
SC2
O
C
Cassette mechanism sub motor control output
35
SC1
O
C
Cassette mechanism sub motor control output
36
MSIN
I
Cassette mechanism MS sense input
37
RIMUTE
O
N
RI output port
38
mtlsw
I
Metal sense input
39
dled
O
N
Alarm LED output
40
n
/R
O
C
Normal reverse output
41
PLAY
O
C
Tape MS filter select output
42
loadsw
I
Tape loading input
43
POS
I
Cassette mechanism position sense input
44
RES
I
Cassette mechanism reverse end sense input
45
PEE
O
C
Beep tone output
46
NES
I
Cassette mechanism forward end sense input
47
NC
Not used
48
STBY
O
C
Stand-by output
49–52
NC
Not used
53
SD
I
SD input
54
mute
O
C
Mute output
55
SYSPW
O
C
System power supply control output
56–59
NC
Not used
60
RESET
I
Reset input
61
RX
I
IP BUS data input
62
NC
Not used
63
dsens
I
Grille detach sense input
64
TELIN
I
TEL mute signal input
65
asens
I
ACC power sense input
66
bsens
I
Back up power sense input
67
CLKIN
I
Clock input
Summary of Contents for KEH-P4800
Page 2: ...4 KEH P4800 P4850 2 2 EXTERIOR ...
Page 13: ...15 KEH P4800 P4850 5 6 7 8 A B C D 5 6 7 8 B ER UNIT IFC A ...
Page 15: ...ER UNIT IFC 17 KEH P4800 P4850 5 6 7 8 A B C D 5 6 7 8 B A ...
Page 16: ...18 KEH P4800 P4850 A 1 2 3 4 B C D 1 2 3 4 CAW1543 3 3 KEYBOARD UNIT C ...
Page 30: ...41 KEH P4800 P4850 7 GENERAL INFORMATION 7 1 PARTS 7 1 1 IC CXA2559Q ...
Page 34: ...45 KEH P4800 P4850 7 1 2 DISPLAY CAW1543 COMMON SEGMENT ...
Page 35: ...47 KEH P4800 P4850 7 3 BLOCK DIAGRAM B A D F E C ...
