Sharp MD-DR470HS Service Manual page 45

IC201 VHiLR37820+-1 : Endec/Servo/Atrac (LR37820) (2/3)
Terminal Name
Pin No.
52 RAA8
53 RAOEX
54 DGND
55 RACASX
56 RAD2
57 RAD3
58 RAA9
59 RARASX
60 RAWEX
61 RAD1
62 RAD0
63* RAA11
64 AGND4
65 VOLDAC
66 AVCC4
67 AGND4
68* ROUTX
69 ROUT
70 VDD4RX
71 MUTE
72 LOUT
73* LOUTX
74 DGND4L
75, 76 FWXVDD
77, 78 FWXOUT
79 FOX
80 DGND
81 VDDX
82 XI
83 XO
84 VDD1
85 AGND3
86* PLLBVC
87 EXTC
88 AGND3
89 DIN2
90 LDCNTU
91* LDCNTD
92* CDBCLK
93 DIN
94* DOUT
95 DEFECT
96* N.C.
97 ADDATA
98 DHPIN
99 DADATA
100 LRCK
101 BCLK
102 DFCK
103 VDD2
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.
Input/Output
Output Address output to external D-RAM. ADR8
Output Data output enable signal output to external D-RAM.
— Digital GND.
Output Column address strobe signal output to external D-RAM.
Input/Three-state Output Data input/output with external D-RAM. D2
Input/Three-state Output Data input/output with external D-RAM. D3 (MSB)
Output Address output to external D-RAM. ADR9
Output Row address strobe signal output to external D-RAM.
Output Data write enable signal output to external D-RAM.
Input/Three-state Output Data input/output with external D-RAM. D1
Input/Three-state Output Data input/output with external D-RAM. D0 (LSB)
Output Address output to external D-RAM. (ADR11: used by 64 Mbit)
— Analog GND.
— DAC for volume. Stop by microcomputer setting.
Stop: HiZ
Input Analog power supply.
— Analog GND.
Output 1 bit PWM Rch (reversed phase)
Output 1 bit PWM Rch
Input Analog power supply.
Output Mute output.
Output 1 bit PWM Lch
Output 1 bit PWM Lch (reversed phase)
— Digital GND.
Input PWM power supply.
— PWM power supply.
Output Focus OK detection signal. "0": focus OK
— Digital GND.
Input Internal digital power supply.
Input Oscillation circuit input. 33.8688 MHz
Output Oscillation circuit output. 33.8688 MHz
Input Power supply for interface.
— Analog GND.
Analog Output Terminal of external capacitor for internal PLLB.
— Terminal of external capacitor for LPF of PLL VCO.
— Analog GND.
Schmidt Input/ DIO input signal/Net MD LSI IF (output). Expansion port 4.
Three-state Output
Output Recording head up/down control output. (DOWN)
Output Recording head up/down control output. (UP)
Output Bit clock input for dubbing.
Schmidt Input Digital input signal.
Output Digital output signal.
Schmidt Input Defect input.
— Not used.
Schmidt Input Audio data input.
— Stop by microcomputer setting. Stop: L
Output Audio data output.
Output Lch/Rch switching output of music data.
Output Shift clock of music data.
Output Clock for AD converter digital filter.
Input Power supply for interface.
Function
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MD-DR470H/MD-DR480H