Pioneer DEH-1900R/XU/EW5 Service Manual page 51

5
- Pin Functions (PN5009A)
Pin No. Pin Name
1 SWVDD
2 ILMPW
3-6 NC
7 FLMD0
8 VDD
9 M_REGC
10 F_REGC
11 VSS
reset
12
13,14 NC
15 SYSPW
16 CDRESET
17 BRST
18 BRXEN
19 BSRQ
20 BSI/TSI
21 BSO
22 BSCK/TSCK
23 DPDT/SELFDO
24 KEYDT/SELFDI
NC
25
26 TELIN
27-30 NC
31 EVSS
32 EVDD
src
33
dsens
34
asens
35
bsens
36
37 NC
38 BU_SIB
39 BU_SOB
40 BU_SCK
41 BU_A0
42 BU_STB
43 BU_HSFLG
44 MUTE
45,46 BU_MODE1,0
47 PWROFF
48 RESETOUT
49 BU_REGC
50 BU_VDD
51,52 BU_X2,1
53 BU_VSS
54 PLL_GND
55 PLL_VDD
BU_RESET
56
57 DVDD3
58 DGND2
59 L_OUT
60 R_OUT
61 COMP
62 SL
63 AVDD2
5
6
Function and Operation
I/O Format
Power supply output for display microcomputer
O C
O C Illumination power output
Not used
Self-rewriting applied voltage input 0(self mode : H)
I
VDD
Regulator output capacitance stabilizing connection of masked ROM built-in item
Regulator output capacitance stabilizing connection of flash memory built-in item
GND
I System reset input
Not used
System power output
O C
CD mechanism RESET output
O C
P-BUS : Reset output
O C
P-BUS : Reception enable input/output
I/O C
P-BUS : Service request input
I C
I C P-BUS : Serial data input/Test data input
P-BUS : Serial data output
O C
P-BUS : Serial clock output/Test data clock synchronizer output
I/O C
Data output for display microcomputer/Data output for self-writing
O N
Key data input from display microcomputer/Data input for self-writing
I C
Not used
Cellular phone mute input
I C
Not used
GHC for external
VDD for external
Source key
I C
Detach sense input
I C
I C ACC sense input
Backup sense input
I C
Not used
Data reception from backup circuit
I C
Data sending to backup circuit
O C
Communication clock with microcomputer for backup circuit
I/O C
Backup circuit register control
O C
O C Backup circuit register control
Clock timer signal polling from backup circuit
I C
O System mute output
VSS fixed(mode specification terminal for backup circuit test)
I C
External power-off control
O
Reset signal output for microcomputer
O
Regulator output capacitance stabilizing connection for backup circuit(1.5 V)
I Power supply for backup circuit(3.3 V)
Input of oscillator circuit for clock timer(4.718 59 MHz)
I
GND for backup circuit
I
Terminal for TUNER only
I
Terminal for TUNER only
I
I Backup circuit reset input
Terminal for TUNER only
Terminal for TUNER only
Terminal for TUNER only
Terminal for TUNER only
Terminal for TUNER only
Terminal for TUNER only
Terminal for TUNER only
DEH-1900R/XU/EW5
6
7
7
8
A
B
C
D
E
F
51
8