Function Table Of Ic - Sharp MD-DR470HS Service Manual

MD-DR470H/MD-DR480H
IC201 VHiLR37820+-1 : Endec/Servo/Atrac (LR37820) (1/3)
Terminal Name
Pin No.
1* EFMMON
2 AVCC1
3 EFMI
4 AGND1
5 AVCC2
6 VREF
7 WBI
8 TCG
9 AIN
10 BIN
11 EIN
12 FIN
13 VBAT
14 AGND2
15-17 TEST0-TEST2
18 TEST3
19* X176KO
20 FODRF
21 FODRR
22 TRDRF
23 TRDRR
24 SLDRF
25* SLDRR
26 SPDRF
27 SPDRR
28 VDD2
29 DGND
30* ACRCER
31* TCRS
32* PLLCK
33* FEMON
34* TOTMON
35* TEMON
36 EFMOX
37 EFMO
38 X700KO
39 VDD5
40 DGND
41 VDD1
42 RAA3
43 RAA2
44 RAA1
45 RAA0
46 RAA10
47 VDD3
48 RAA4
49 RAA5
50 RAA6
51 RAA7
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.

FUNCTION TABLE OF IC

Input/Output
Analog Output EFM monitor output.
Input Analog power supply. (For EFM system)
Analog Input EFM signal input from RF amplifier.
— Analog GND.
Input Analog power supply. (For AD)
Analog Input Reference voltage input of RF amplifier.
Analog Input ADIP wobble signal.
Analog Input Track cross signal.
Analog Input A-signal for focus servo.
Analog Input B-signal for focus servo.
Analog Input E-signal for tracking servo.
Analog Input F-signal for tracking servo.
Analog Input Power supply voltage detection signal for constant voltage servo.
— Analog GND.
Schmidt Input Input for test. Normally connected to GND.
Schmidt Input (For scan circuit)
Output Clock output. f = 176.4 kHz (4fs). Servo OFF: L/Always L
Output Focus servo forward output.
Output Focus servo reverse output.
Output Tracking servo forward output.
Output Tracking servo reverse output.
Output Slide servo forward output.
Output Slide servo reverse output.
Output Spindle servo forward output.
Output Spindle servo reverse output.
Input Power supply for interface.
— GND for interface.
Output CRC error flag monitor output of ADIP.
Output Track cross signal.
Three-state Output EFM PLL clock output on playback.
Output Focus error signal monitor output.
Output Total signal monitor output. Series resistor 10 - 100 kohm built in.
Output Tracking error signal monitor output.
Output EFM signal output on recording. (Inversion output of 50-pin)
Output EFM signal output on recording.
(C1F (C1 error flag) monitor on recording)
Output Clock output. f=705.6 kHz
Input Power supply for core.
— GND for core.
Input Power supply for interface.
Output Address output to external D-RAM. ADR3
Output Address output to external D-RAM. ADR2
Output Address output to external D-RAM. ADR1
Output Address output to external D-RAM. ADR0 (LSB)
Output Address output to external D-RAM. ADR10
Input Power supply for interface. (DRAM)
Output Address output to external D-RAM. ADR4
Output Address output to external D-RAM. ADR5
Output Address output to external D-RAM. ADR6
Output Address output to external D-RAM. ADR7
Function
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