Ic Description - Aiwa XR-EM30 Service Manual

IC DESCRIPTION -3/3 (LA9241ML) -2/2
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Pin No. Pin Name
36 TES
37 HFL
38 SLOF
39, 40 CVÐ, CV+
41 RFSM
42 RFSÐ
43 SLC
44 SLI
45 DGND
46 FSC
47 TBC
48 NC
49 DEF
50 CLK
51 CL
52 DATA
53 CE
54 DRF
TE
L 13942296513
55 FSS
56 VCC2
57 REFI
58 VR
59 LF2
60 PH1
61 BH1
62 LDD
63 LDS
64 VCC1
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I/O
O Pin from which TES signal is output to DSP.
ÒHigh Frequency LevelÓ is used to judge whether the main beam position is on top of bit or on
O
top of mirror.
I Sled servo off control input pin.
I CLV error signal input pin from DSP.
O RF output pin.
I RF gain setting and EFM signal 3T compensation constant setting pin together with RFSM pin.
O ÒSlice Level ControlÓ is the output pin which controls the RF signal data slice level by DSP.
I Input pin which control the data slice level by the DSP.
– Digital system GND.
O Output pin to which external focus search smoothing capacitor is connected.
I ÒTracking Balance ControlÓ EF balance variable range setting pin.
– No connection.
O Disc defect detector output pin.
I Reference clock input pin. 4.23 MHz of the DSP is input.
I Microprocessor command clock input pin.
I Microprocessor command data input pin.
I Microprocessor command chip enable input pin.
O ÒDetect RFÓ RF level detector output.
I ÒFocus Search SelectÓ focus search mode (± search/+ search) select pin.
– Servo system and digital system Vcc pin.
– Pin to which external bypass capacitor for reference voltage is connected.
O Reference voltage output pin.
I Disc defect detector time constant setting pin.
I Pin to which external capacitor for RF signal peak holding is connected.
I Pin to which external capacitor for RF signal bottom holding is connected.
O APC circuit output pin.
I APC circuit input pin.
– RF system Vcc pin.
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Description
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