52
1
2
3
4
1
2
3
4
F
E
D
C
B
A
DEH-2237ZF/X1R/UC
7.2 PARTS
7.2.1 IC
-
Pin Functions (PD5756A)
Pin No.
Pin Name
I/O
Format
Function and Operation
1
PDO
O
C
Tuner : PLL data output
2
pck
O
C
Tuner : PLL serial clock output
3
BLPWR
O
LCD back light power output
4
ILMOUT
O
Illumination D/A output
5
LCDDT
O
C
LCD driver : Data output
6
PWMIN
I
Illumination PWM input
7
LCDCLK
O
C
LCD driver : Clock output
8
BYTE
GND
9
CNVSS
GND
10
SUBCLKI
I
Sub clock input
11
SUBCLKO
O
Sub clock output
12
reset
I
Reset input
13
XOUT
O
Crystal oscillating element connection pin
14
VSS
GND
15
XIN
I
Crystal oscillating element connection pin
16
VCC
Power supply terminal
17
NMI
I
Not used
18
SD
I
Tuner : PLL station detector input
19
ilmint
I
Illumination interrupt input
20
rotint
I
Rotary encoder interrupt input
21
asens
I
ACC power sense input
22
LCDCE
O
C
LCD driver : Chip enable output
23
lcdinh
O
C
LCD driver : Inhibit output
24
LEDPWM
Not used
25
SPEED
I
SPEED pulse input
26
romcs
O
C
ROM correction chip select output
27
bsens
I
Back up power sense input
28
bsck
O
C
P-BUS : Serial clock output
29
BSI
I
P-BUS : Serial data input
30
BSO
O
N
P-BUS : Serial data output
31
ATXD
O
C
ACP-BUS : ACP data output
32
ARXD
I
ACP-BUS : ACP data input
33
evce@
O
C
Electronic volume : Chip enable output 2
33
evce
O
C
Electronic volume : Chip enable output 1
35
EDT
O
C
Electronic volume : Interface Data output
36
clock
I
Clock defeat input
37
ELCK
O
C
Electronic volume : Clock output
38,39
NC
Not used
40
BRXEN
I/O
/C
P-BUS : Communication enable input / output
41
bsrq
I
P-BUS : Request input
42
brst
I
P-BUS : Reset input
43
RSPSW
O
C
Rear speaker switch output
44
SWVDD
O
C
LCD driver : Power supply control output
45
epce
O
C
Diagnosis EEPROM : Chip enable output
46
PLLCE
O
C
Tuner : PLL chip enable output
47
st
I
Tuner : Stereo input
48
LOCL
O
C
Tuner : Local low output
49
pllce@
O
C
Tuner : PLL chip enable output 2
50-54
kdt$-kdt)
I
Key data input 4-0
55
RMUTE
O
C
Rear mute output
56
TESTIN
I
Test program mode input
57-61
kst%-kst!
O
N
Key strobe output 5-1
62
VCC
Power supply terminal
63
kst)
O
N
Key strobe output 0
64
VSS
GND
65
clipin
I
Clip detector input
66
rpain
I
Reverse perking aid input
Summary of Contents for DEH-2237ZF X1R/UC
Page 5: ...5 6 7 8 F E D C B A 5 6 7 8 DEH 2237ZF X1R UC 5 ...
Page 18: ...18 B A CN604 105mA 8V KL KL 1 2 3 4 1 2 3 4 F E D C B A DEH 2237ZF X1R UC 3 3 KEYBOARD UNIT ...
Page 26: ...26 A A MOTHER UNIT 1 1 2 3 4 1 2 3 4 F E D C B A DEH 2237ZF X1R UC ...
Page 27: ...27 A SIDE B 1 5 6 7 8 F E D C B A 5 6 7 8 DEH 2237ZF X1R UC ...
Page 29: ...B B KEYBOARD UNIT SIDE B A CN604 29 5 6 7 8 F E D C B A 5 6 7 8 DEH 2237ZF X1R UC ...
Page 31: ...31 C C CD CONTROL UNIT SIDE B CLAMP 8EJ 5 6 7 8 F E D C B A 5 6 7 8 DEH 2237ZF X1R UC ...
