Pioneer DEH-1850 Service Manual page 52

1
- Pin Functions (PE5497B)
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Pin No. Pin Name
1 LD
A
2 PD
rst
3
4 INTQ
5 A0
stb
6
sck
7
8 SO
9 SI
10 D.VDD
11 D.GND
12 REG16
13 REGS
B
14 DA.VDD
15 ROUT
16 DA.GND
17 REGC
18 DA.GND
LOUT
19
20 DA.VDD
21 ICEMD
22 X.VDD
xtal
23
24 X.GND
25 XTAL
C
26 VPP
27 C.VDD
28 C.GND
29 RESET
TE
30 IO.GND
L 13942296513
31 IO.VDD
32 ICECK
33 INT0
34 INT2
35-42 PA0-7
43 DOUT
44 SCKO
D
45 LRCK
46 TX/EMPH
47-54 PC0-7
55-62 PB0-7
63 SD2
64 IO.GND
65 IO.VDD
66 FD
67 TD
68 SD
69 MD
E
70 TEST
71 AD.GND
72 AD.VDD
73 EFM
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Function and Operation
I/O
Laser diode control current output
O
Photo diode signal (for detecting laser power) input
I
Reset (CD block)
I
O Interrupt
I Address 0
Strobe
I
Serial clock
I
Serial data output
O
Serial data input
I
Power supply for digital circuits
Ground for digital circuits
Capacitor connection for regulator (logic)
Capacitor connection for regulator (SRAM)
Power supply for Audio-DAC
R-channel audio signal output
O
Ground for Audio-DAC
Capacitor connection for regulator (RF amp.)
Ground for Audio-DAC
O L-channel audio signal output
Power supply for Audio-DAC
Selected to ICE
I
Power supply for the crystal oscillator
Crystal connection
O
Ground for the crystal oscillator
Crystal connection
I
Programming power supply
I
Power supply for digital circuits(Power supply for the CPU)
Ground for digital circuits(Ground for the CPU)
Reset
I
Ground for the digital port
Power supply for the digital port
O Clock for ICE
Interrupt
I
Interrupt
I
General port A
I/O
Data output (audio)
O
Serial clock output (audio)
O
LR clock (audio)
O
Transmit data/Emphasis information output
O
General port C
I/O
General port B
I/O
Sled drive
O
Ground for the digital port
Power supply for the digital port
O Focus drive output (PWM)
Tracking drive
O
Sled drive
O
Motor drive output (PWM)
O
Test
I
Ground for the A/D converter
Power supply for the A/D converter
EFM signal
O
x ao
y
. i
DEH-1850/XN/ES
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