Pioneer PDR-04 - Manual (Page 72)

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.