Specifications

2000 Jun 26 46
Philips Semiconductors Product specification
Digital servo processor and Compact Disc
decoder with integrated DAC for video CD (CD7 II)
SAA7327
7.15.6 SUMMARY OF SERVO COMMANDS
A list of the servo commands is given in Table 17. These are fully compatible with SAA7370.
Table 17 SAA7327 servo commands
Notes
1. These commands only available when internal decoder interface is enabled.
2. <peak_l> and <peak_r> bytes are clocked out LSB first.
3. Decoder status flag information in <dec_stat> is only valid when the internal decoder interface is enabled.
COMMANDS CODE BYTES PARAMETERS
Write commands
Write_focus_coefs1 17H 7 <foc_parm3> <foc_int> <ramp_incr> <ramp_height>
<ramp_offset> <FE_start> <foc_gain>
Write_focus_coefs2 27H 7 <defect_parm> <rad_parm_jump> <vel_parm2>
<vel_parm1> <foc_parm1> <foc_parm2> <CA_drop>
Write_focus_command 33H 3 <foc_mask> <foc_stat> <shock_level>
Focus_gain_up 42H 2 <foc_gain> <foc_parm1>
Focus_gain_down 62H 2 <foc_gain> <foc_parm1>
Write_radial coefs 57H 7 <rad_length_lead> <rad_int> <rad_parm_play>
<rad_pole_noise> <rad_gain> <sledge_parm2>
<sledge_parm_1>
Preset_Latch 81H 1 <chip_init>
Radial_off C1H 1 1CH
Radial_init C1H 1 3CH
Short_jump C3H 3 <tracks_hi> <tracks_lo> <rad_stat>
Long_jump C5H 5 <brake_dist> <sledge_U_max> <tracks_hi> <tracks_lo>
<rad_stat>
Steer_sledge B1H 1 <sledge_level>
Preset_init 93H 3 <re_offset> <re_gain> <sum_gain>
Write_decoder_reg
(1)
D1H 1 <decoder_reg_data>
Write_parameter A2H 2 <param_ram_addr> <param_data>
Read commands
Read_Q_subcode
(1)(2)
0H up to 12 <Q_sub1 to 10> <peak_l> <peak_r>
Read_status 70H up to 5 <foc_stat> <rad_stat> <rad_int_lpf> <tracks_hi>
<tracks_lo>
Read_hilevel_status
(3)
E0H up to 4 <intreq> <dec_stat> <seq_stat> <motor_start_time>
Read_aux_status F0H up to 3 <re_offset> <re_gain> <sum_gain>