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DEH-P645,P56,P545,46,445,41
QQ
3 7 63 1515 0
Pin No.
Pin Name
52-54
C2D1-C2D3
55
D.VDD
56
SFSY
57
SBSY
58
SBSO
59
SBCK
60
A.GND
61
MD
62
SD
63
TD
64
FD
65
FBAL
66
TBAL
67
A.VDD
68
TBC
69
EFM
70
HOLD
71
RFOK
72
MIRR
73
A.GND
74
HOME
75
VR1
76
FE
77
TE
TE
78
TEC
L 13942296513
79
REFOUT
80
A.VDD
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
BA6997FM
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I/O
Function and Operation
O
Output pin for indicating the C2 error correction results
Supplies current of positive voltage to the logic circuit
O
Outputs 1 word of the subcode. Generally, 1 cycle is approx 136 micro seconds
O
The signal indicates the beginning of the subcode block. The SFSY signal is
output at high level every 98 times
O
Output pin for the subcode data
I
Input pin for the clock signal for read-out of the subcode data
GND for the analog circuit
O
Output pin for the spindle drive
O
Output pin for the sled drive
O
Output pin for the tracking drive
O
Output pin for the focus drive
O
Output pin for the focus balance control
O
Output pin for the tracking balance control
Supplies current of positive voltage to the analog circuit
I
Switches coefficient banks for the tracking filter
I
Input pin for the EFM signal
I
Input pin for the hold control signal
I
Input pin for the RFOK signal
I
Input pin for the MIRR signal
GND for the analog circuit
I
Home position detector input
I
The signal input through these pins is digitized to 8-bit by the A/D converter,
which by operation of the assigned register, can be read into the microcomputer
I
Inputs a focus-error signal from the RF amplifier
I
Inputs a tracking-error signal from the RF amplifier
I
Input pin for the tracking comparator
O
Output point for midpoint potential for the A/D converter for the LSI portion
Supplies current of accurate voltage to the analog circuit
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1 5
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9 4
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2 9
9 4
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40
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