Pioneer DEH-P840MP Service Manual page 77

*PD5741A
30
31
50
51 80
- Pin Functions (PD5740A)(DEH-P8450MP/XN/ES)
Pin No. Pin Name
1 BSO
bsck
2
3 DUALILM
4 CD5VON
5 VDT
6 VST
7 VCK
8 BYTE
9 VSS
10 TELIN
11 FLPPW
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18,19 NC
20 DALMON
21 IPBUSIN2
22 OELPW
23 SYSPW
24 PEE
25 NC
26 ROMCS
27 ROMCK
28 ROMDATA
29 IPBUSIN
30 IPBUSOUT
31 DPDT1
32 KYDT1
33,34 NC
35 DPDT2
36 KYDT2
37, 38 ROT1, 0
39 PCL
40 SWVDD1
41 DISPPW
42 ILMPW1
43 ILMPW2
44-48 NC
1
100
81
I/O Function and Operation
O P-BUS:Data output
O P-BUS:Clock output
O LCD:Illumination color select output
O CDS:Eject sense output
O EVOL:Data output
O EVOL:Strobe output
O EVOL:Clock output
Vss
Vss
I TEL:Telephone mute input
O Auto flap motor power supply control output
I Reset input(RESET)
O Clock output
Power supply input(Vss)
I Clock input
Power supply input(Vcc)
Not used(Vcc)(Pull up)
Not used
O Consumption current reduction output
I IP-BUS:Input 2
O OEL Unit:Power supply output(16.5V)
O System power control output
O Beep tone output
Not used
O External ROM:Chip select output
O External ROM:Clock output
I/O External ROM:Data input / output
I IP-BUS:Data input
O IP-BUS:Data output
O OEL Unit:Grille microcomputer communication data output
I OEL Unit:Grille microcomputer communication data input
Not used
O LCD:Grille microcomputer communication data output
I LCD:Grille microcomputer communication data input
I Rotary encoder pulse input 1, 0
O Clock adjustment output
O OEL Unit:Grille microcomputer power supply output(5.1V)
O LCD:Power supply control output
O OEL Unit:Illumination power supply output(9.3V)
O LCD:Illumination power supply output
Not used
DEH-P840MP,P8400MP,P8450MP
IC's marked by * are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
77