Ic Pin Functions - Sony HTC-WX5 Service Manual

6-17. IC PIN FUNCTIONS

• IC101 FOCUS/TRACKING/SLED SERVO RF AMP (CXA1992AR) (BD BOARD)
Pin No. Pin Name
1 FEO
2 FEI
3 FDFCT
4 FGD
5 FLB
6 FE O
7 FE M
8 SRCH
9 TGU
10 TG2
11 FSET
12 TA M
13 TA O
14 SL P
15 SL M
16 SL O
17 ISET
18 VCC
19 LOCK
20 CLK
21 XLT
22 DATA
23 XRST
24 C.OUT
25 SENS1
26 SENS2
27 FOK
28 CC2
29 CC1
30 CB
31 CP
32 RF I
33 RF O
• Abbreviation
FZC: Focus zero-cross
DFCT : Defect
TZC : Tracking zero-cross
BALH : E-F Balance (High)
TGH : Tracking Gain (High)
FOH : Focus Bias (High)
32
I/O
Focus error amplifier output
O
Connected internally to the window comparator input for bias adjustment
I Focus error input
I Capacitor connection pin for defect time constant
I Ground this pin through a capacitor for cutting the focus servo high-frequency gain
I External time constant setting pin for boosting the focus servo low-frequency
O Focus drive output
I Focus amplifier inverted input
I External time constant setting pin for generating focus search waveform
I External time constant setting pin for switching tracking high-frequency gain
I External time constant setting pin for switching tracking high-frequency gain
I Peak frequency setting pin for focus and tracking phase compensation amplifier
I Tracking amplifier inverted input
O Tracking drive output
I Sled amplifier non-inverted input
I Sled amplifier inverted input
O Sled drive output
Connect an external capacitance to set the current which determines the Focus search,
I
Track jump, and Sled kick heights
I Positive power supply
I The sled overrun prevention circuit operates when this pin is Low (No pull-up resistance)
I Serial data transfer clock input from CPU (No pull-up resistance)
I Lach input from CPU (No pull-up resistance)
I Serial data input from CPU (No pull-up resistance)
I Reset input; resets at Low (No pull-up resistance)
O Track number count signal output
Outputs FZC, DFCT1, TZC, BALH, TGH, FOH, ATSC, and others according to the
O
command from CPU
Outputs DFCT2, MIRR, BALL, TGL, FOL,and others according to the command from
O
CPU
O Focus OK comparator output
I Input for the defect bottom hold output with capacitance coupled
Defect bottom hold output
O
Connected internally to the interruption comparator input
I Connection pin for defect bottom hold capacitor
Connection pin for MIRR hold capacitor
I
MIRR comparator non-inverted input
Input for the RF summing amplifier output with capacitance coupled
I
RF summing amplifier output
O Eye-pattern check point
ATSC : Anti Shock
MIRR : Mirror
BALL : E-F Balance (Low)
TGL : Tracking Gain (Low)
FOL : Focus Bias (Low)
Function