General information, 1 parts, 1 1c – Pioneer PDR-04 User Manual
Page 72: Pd4786a (servo ucom board assy : ic356), Mechanism control microcomputer 11) pin function, Pdr-04, 1) pin function
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PDR-04
7. GENERAL INFORMATION
7.1 PARTS
7.1.1 1C
• The infonnation shown in the list is basic infonnation and may not correspond exactly to that shown in schematic diagrams.
■ PD4786A (SERVO UCOM BOARD ASSY : IC356)
Mechanism Control Microcomputer
1
1) Pin Function
Pin No.
Mark
Name
I/O
Initial
Function
1
P43/AD3
AD3
I/O
-
Data address line
2
P44/AD4
AD4
I/O
-
3
P45/AD5
AD5
I/O
_
4
P46/AD6
AD6
I/O
5
P47/AD7
AD7
I/O
-
6
P50/A8
A8
0
-
Address line
7
P51/A9
A9
0
-
8
P52/A10
A10
0
_
9
P53/A11
All
0
-
10
P54/A12
A12
0
-
11
P55/A13
A13
0
-
12
NC
GND
-
-
Not used
13
P56/A14
A14
o
-
Address line
14
P57/A15
A15
0
-
15
Vdd
+5V
-
-
Positive power supply voltage
16
AVss
GND
-
-
A/D converter GND
17
P70/AN0
XOPEN
1
-
OPEN SW. ”L" when open is completed
18
P71/AN1
XCLMP
1
-
CLAMP SW. "L" when clamp DOWN
19
NC
GND
-
-
Not used
20
P72/AN2
GND
1
-
21
P73/AN3
GND
1
_
22
P74/AN4
TEPP
i(A)
-
Tracking error peak to peak (Fortrracking gain adjustment)
23
P75/AN5
RFT
1(A)
-
Playback RF upper envelope
24
P76/AN6
RFB
1(A)
—
Playback RF lower envelope
25
P77/AN7
MACK
1
-
"L" when opposite mode controller serial handshake is input
26
AVref
+5V
-
—
A/D converter reference voltage input
27
AVdd
+5V
-
—
A/D converter analog power supply
28
Vdd
+5V
-
—
Positive power supply pin
29
P20/NM1
XPFAIL
i
—
"L" when power failure is detected, j. detection
30
P21/INTP0
FG
1
—
Spindle FG i detection
31
P22/INTP1
SCOR
1
_
EFM decoder frame sync 1 detection
32
P23/INTP2
ATIP
1
—
ATIP sync t 1 detection
33
P24/INTP3
ESYN
1
EFM encoder frame sync 1 detection
34
P25/INTP4
XRFDT
1
_
“L" when EFM playback RF detected. | detection
35
P26/INTP5
TOCP
1
_
TOC position sensor (For slider stop processing at TOC position (=L))
36
P27/INTP3/TI
SENS
1
_
SONY servo 1C SENS signal (For details, refer to 7. Timing Chart.)
37
NC
GND
-
Not used
38
P30/TxD
FOK
1
_
Focus OK input ("H" when Focus OK)
39
P31/RxD
XECE
o
H
“L" when test tool reading enable is output
40
P32/SO/SBO
MSO
o
L
Clock sync serial transformer data output
Note)
72
"A" in the I/O column indicates analog.