Pioneer KEH-P4800R, Service Manual

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40
KEH-P4830R,P4800R
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
Pin No. Pin Name I/O Format Function and Operation
62
rck
I RDS clock input
63
dsens
I Grille detach sense input
64 TELIN I Cellular mute input
65
asens
I ACC power sense input
66
bsens
I Back up power sense input
67 NC Not used
68 VDD VDD
69 X2 O Oscillator output
70 X1 I Oscillator input
71 IC Connect to GND
72 XT2 Sub Clock terminal
73 TESTIN I Test program mode input
74 AVDD A/D converter analog power supply (VDD)
75 AVREF0 I A/D converter standard voltage input
76 SL I Signal level input
77 CL I Synchronizing signal input of display data latch
78 NL I Noise level input
79 MODELIN I Model select input
80 ALMUTE O C Mute output for Detach alarm
80
1
20
21 40
41
60
61
*PD4972A
Format Meaning
C C MOS
N N Channel open drain
*PD6278A
16
17
32
33
48
49 64
1