SAA7348GP Datasheet, PDF (44/60 Pages) NXP Semiconductors – All Compact Disc Engine ACE

Philips Semiconductors
All Compact Disc Engine (ACE)
Preliminary specification
SAA7348GP
8.4 Summary of servo commands
The servo commands are listed in Table 33.
Table 33 Servo commands
COMMANDS
CODE BYTES
PARAMETERS
Write commands
Preset_Latch
Write_focus_coefs1
Write_focus_coefs2
Write_focus_command
Focus_gain_up
Focus_gain_down
Write_radial coefs
Preset_init
Radial_off
Radial_init
Short_jump
Long_jump
Steer_sledge
Write_decoder_reg
Write_parameter
Read commands
Read_status
Read_aux_status
Read_Q_subcode
Read_hilevel_status
81H
17H
27H
33H
42H
62H
57H
93H
C1H
C1H
C3H
C5H
B1H
D1H
A2H
70H
F0H
0H
E0H
1 <chip_init>
7 <foc_parm_3> <foc_int> <ramp_incr> <ramp_height> <ramp_offset>
<FE_start> <foc_gain>
7 <defect_parm> <rad_parm_jump> <vel_parm2> <vel_parm1>
<foc_parm_1> <foc_parm_2> <CA_drop>
3 <foc_mask> <foc_stat> <shock_level>
2 <foc_gain> <foc_parm_1>
2 <foc_gain> <foc_parm_1>
7 <rad_length_lead> <rad_int> <rad_parm_play> <rad_pole_noise>
<rad_gain> <sledge_parm_2> <sledge_parm_1>
3 <RE_offset> <RE_gain> <sum_gain>
1 1Ch
1 3Ch
3 <offtrack_hi> <offtrack_lo> <rad_stat>
5 <brake_dist_max> <sledge_U_max> <offtrack_hi> <offtrack_lo>
<rad_stat>
1 <sledge_Uout>
1 <deccmd>
2 <param_ram_addr> <param_data>
up to 5 <foc_stat> <rad_stat> <rad_int_lpf> <offtrack_hi> <offtrack_lo>
up to 3 <RE_offset> <RE_gain> <sum_gain> <foc_error> <rad_error>
up to 12 <Q_sub1 to 10> <peak_l> <peak_r>
up to 4 <intreq> <decstat> <seqstat> <motorstarttime>
1997 Jul 11
44