Sony MDS-JA50ES Service Manual page 64

Pin No. Pin Name
41 WFCK
42 GTOP
43 GFS
44 XPLCK
45 EFMO
46 RAOF
47 MVCI
TEST2
48
49 DIPD
50 DVSS
51 DICV
52 DIFI
53 DIFO
54 AVDD
55 ASYO
56 ASYI
57 BIAS
58 RFI
59
AVSS
60 CLTV
61 PCO
62 FILI
63 FILO
64 PEAK
65 BOTM
66 ABCD
67 FE
68 AUX1
69 VC
70 ADIO
71 TEST3
72 AVDD
73 ADRT
74 ADRB
75 AVSS
SE
76
77 TE
78 AUX2
79 DCHG
80 APC
• Abbreviation
EFM : Eight to Fourteen Modulation
PLL : Phase Locked Loop
I/O
WFCK clock (7.35 kHz) signal output
O
(Playback: EFM decoder PLL Recording: EFM encoder PLL)
O "H": Opens playback EFM frame sync protection window
"H": Playback EFM sync and interpolation protection timing match
O
EFM decoder PLL clock output (98 fs=4.3218 MHz)
O
Falling edge and EFM signal edge match
EFM signal output (Recording)
O
Internal RAM overflow detection signal output (decoder monitor output)
O
Outputs "H" when the disc rotation exceeds ±4F jitter margin during playback
Digital-in PLL oscillation input (Not used) (Fixed at "L")
I
Test pin (Fixed at "L")
I
Digital-in PLL phase comparison output
O (3)
Internal VCO: (Frequency: Low n "H") External VCO: (Frequency: Low n "L")
Ground (Digital)
—
Digital-in PLL internal VCO control voltage input
I (A)
Filter input when digital-in PLL internal VCO is used
I (A)
Filter output when digital-in PLL internal VCO is used (Not used)
O (A)
Power supply (+5V) (Analog )
—
Playback EFM full-swing output (L=VSS, H=VDD)
O
Playback EFM asymmetry comparate voltage input
I (A)
Playback EFM asymmetry circuit constant current input
I (A)
Inputs playback EFM RF signal from RF amplifier
I (A)
— Ground (Analog )
Decoder PLL master clock PLL VCO control voltage input
I (A)
Decoder PLL master clock PLL phase comparison output
O (3)
Decoder PLL master clock PLL filter input
I (A)
Decoder PLL master clock PLL filter output
O (3)
Inputs peak hold signal for light amount signal from RF amplifier
I (A)
Inputs bottom hold signal for light amount signal from RF amplifier
I (A)
Light amount signal from RF amplifier
I (A)
Input of focus error signal from RF amplifier
I (A)
Input of auxiliary signal from RF amplifier
I (A)
Input of middle point voltage (+2.5V) from RF amplifier
I (A)
A/D converter input signal monitor output
O (A)
Test input (Fixed at "L")
I (A)
Power supply (+5V) (Analog)
—
A/D converter operation range upper limit voltage input (Fixed at "H")
I (A)
A/D converter operation range lower limit voltage input (Fixed at "L")
I (A)
Ground (Analog)
—
I (A) Input of sled error signal from RF amplifier
Input of tracking error signal from RF amplifier
I (A)
Auxiliary input pin 2 (Fixed at "L")
I (A)
Connected to ground
I (A)
Laser APC input (Fixed at "L")
I (A)
— 86 —
Function