Sharp DV-L70U Service Manual page 36

DV-L70U
Pin No. Terminal name
44 TRO
45 VREF
46 RFGC
47 TEBC
48 FMO
49 FVO
50 DMO
51 2VREF
52 SEL
53 FOON
54 DFCT
55 SRCH
56 SHC
57 VDD
58 VSS
59 IO0
60 IO1
61 IO2
62 IO3
63 /DMOUT
64 /CKSE
65 /DACT
66 TESIN
67 TESIO1
68 VSS
69 PXI
70 PXO
71 VDD
72 XVSS
73 XI
74 XO
75 XVDD
76 DVDD
77 RO
78 DVSS
79 DVR
80 LO
81 DVDD
82 TEST1
83 TEST2
84 TEST3
85 BUS0
86 BUS1
87 BUS2
I/O
O Tracking equalizer output terminal.
– Analog reference power terminal.
O RF amplitude adjustment control signal output terminal.
Output of 3-pole PWM signal. (PWM carrier = 88.2 kHz)
O Tracking balance control signal output terminal.
Output of 3-pole PWM signal. (PWM carrier = 88.2 kHz)
O Feed equalizer output terminal.
Output of 3-pole PWM signal. (PWM carrier = 88.2 kHz)
O Speed error signal or feed search EQ output terminal.
Output of 3-pole PWM signal. (PWM carrier = 88.2 kHz)
O Disc equalizer output terminal.
Output of 3-pole PWM signal. (PWM carrier = DSP system
88.2kHz, to be synchronized with PXO)
–
O
O
O
O
O
–
–
I/O General use I/O port.
It is possible to select the input port and output port according
to command.
In case of input port the terminal state (H/L) can be read with
the read command.
In case of output port the terminal state (H/L/HiZ) can be
controlled with the command.
Terminal to set the mode to output dual value PWM of feed
equalizer from the IO0,1 terminal and to output the dual value
PWM from disc equalizer of IO2,3 terminal "L" Active.
X'tal selection terminal.
When 16.9344 MHz: "H" When 33.8688 MHz: "L"
Test terminal.
Test input terminal.
Test input/output terminal.
Digital ground terminal.
DSP system clock oscillation circuit input terminal.
DSP system clock oscillation circuit output terminal.
Digital + power terminal.
Ground terminal for system clock oscillation circuit.
System clock oscillation circuit input terminal.
System clock oscillation circuit output terminal.
Positive power terminal for system clock oscillation circuit.
– D/A converting section power terminal.
O R channel data forward rotation output terminal.
– D/A converting section analog ground terminal.
– D/A converting section reference voltage terminal.
O L channel data forward rotation output terminal.
– D/A converting section power terminal.
I Test terminal.
To be opened usually.
I Test terminal.
To be opened usually.
I Test terminal.
To be opened usually.
I/O Microcomputer interface data input/output terminal.
I/O
I/O
Operation function
9-17
Remarks
Pull-up resistor
built in.
Pull-up resistor
built in.
Pull-up resistor
built in.
Schmidt input
CMOS port