Pioneer DEH-P3950MP Service Manual page 57

5
- Pin Functions (PN5011A)
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
27 ASENBO
28 IPPW
29 IPTX
30 IPRX
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
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
Slave ACC sense output
O C
O C IPBUS : Driver power supply control output
IPBUS : Data output
O C
IPBUS : Data input
I C
GHC for external
VDD for external
I C Source key
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
I/O C Communication clock with microcomputer for backup circuit
Backup circuit register control
O C
O C Backup circuit register control
Clock timer signal polling from backup circuit
I C
System mute output
O C
VSS fixed(mode specification terminal for backup circuit test)
I
External power-off control
O
O Reset signal output for microcomputer
Regulator output capacitance stabilizing connection for backup circuit(1.5 V)
Power supply for backup circuit(3.3 V)
I
Input of oscillator circuit for clock timer(4.718 59 MHz)
I
GND for backup circuit
I
I Terminal for TUNER only
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
DEH-P3950MP/XU/ES
6
7
7
8
A
B
C
D
E
F
57
8