Tel 13942296513 - Sony HCD-F50 Service Manual

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Pin No. Pin Name
38 SLOF
39 CV–
40 CV+
41 RFSM
42 RFS–
43 SLC
44 SLI
45 DGND
46 FSC
47 TBC
48 NC
49 DEF
50 CLK
51 CL
52 DAT
53 CE
54 DRF
55 FSS
56 VCC2
57 RFFI
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L 13942296513
58 VR
59 LF2
60 PH1
61 BH1
62 LDD
63 LDS
64 VCC1
• Abbreviation
EFM : Eight to Fourteen Modulation
APC : Auto Power Control
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I/O
I Sled servo off control input
CLV error signal is input from the digital signal processor
I
CLV error signal is input from the digital signal processor
I
O RF output
Works together with the RFSM pin to set the RF gain and the 3T compensation constant
I
for the EFM signal
SLI (Slice Level Control) is output to control a data slice level of the RF waveform by the
O
digital signal processor
Input pin for controlling a data slice level by the digital signal processor
I
– Digital Ground
Focus search smoothing capacitor output
O
TBC (Tracking Balance Control) sets a EF balance variable range
I
– Not used
Defect detection output for a disc
O
Reference clock input The 4.23 MHz of the digital signal processor is input
I
I Microprocessor command clock input
Microprocessor command data input
I
I Microprocessor command chip enable input
O DRF (Defect RF) outputs a RF level detection
FSS (Focus Search Select) is a switching pin for the focus search mode (±search/+search
I
for a reference voltage)
– Servo system and digital system VCC
Reference voltage bus control is connected
I
O Reference voltage output
Constant setting for a disc defect detection
I
Connected to the capacitor for the RF signal peak hold
I
I Connected to the capacitor for the RF signal bottom hold
APC circuit output
O
APC circuit input
I
– RF system VCC
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9