cxa1982q Sony Electronics, cxa1982q Datasheet - Page 24

• Manufacturer Part Number: cxa1982q
• Description: Rf Signal Processing Servo Amplifier For Cd Players
• Manufacturer: Sony Electronics

3. $2X (“TZC” at SENS pin (Pin 24))
These commands deal with turning the tracking servo and sled servo ON/OFF, and creating the jump pulse
and fast forward pulse during access operations.
Tracking error
D7
0
[ A]
[ B]
[ E]
[ G]
[ C]
[ D]
[ F]
[ H]
(TZC)
0V
RF_I
D6
0
30
46
From inner to outer track
[ A]
[ D]
Envelope Detection
Waveform Shaping
D5
Fig. 6. TMI movement during braking operation
1
D4
Fig. 7. Internal waveform
0
[ B]
[ E]
Waveform Shaping
Edge Detection
– 24 –
D3
Tracking
control
00: OFF
01: Servo ON
10: F-JUMP
11: R-JUMP
TM1, TM3, TM4
CXA1982Q
(MIRR)
(Latch)
D2
[ C]
[ F]
From outer to inner track
CK
D
Q
[ G]
D1
BRK
Sled
control
00: OFF
01: Servo ON
10: F-FAST FORWARD
11: R-FAST FORWARD
TM2, TM5, TM6
D2
D0
TM7
Low: open
High: make
(“MIRR”)
(“TZC”)
Braking is
applied from
here.
CXA1982Q