CXA2542AQ
[ A]
[ D]
[ B]
[ E]
D2
(MIRR)
[ C]
Envelope
Detection
Waveform
Shaping
RF_I
TZC
30
44
[ G]
TM7
Low: open
High: make
D Q
CK
BRK
[ F]
(Latch)
CXA2542AQ
Waveform
Shaping
[ H]
Edge Detection
Fig. 6. TM7 movement during braking operation
From inner to outer track
From outer to inner track
[ A]
[ B]
[ C]
[ D]
("MIRR")
("TZC")
[ E]
[ F]
[ G]
[ H]
Braking is applied
from here.
0V
Fig. 7. Internal waveform
3. $2X (TZC at SENS1 pin (Pin 23), MIRR at SENS2 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.
D7
0
D6
0
D5
1
D4
0
D3
D2
D1
D0
Tracking
control
off
Sled
control
00
01
10
11
00
01
10
11
off
Servo ON
F-JUMP
R-JUMP
↓
Servo ON
F-FAST FORWARD
R-FAST FORWARD
↓
TM1, TM3, TM4,
TM2, TM5, TM6
– 32 –
SONY [ SONY CORPORATION ]
