saa7825 NXP Semiconductors, saa7825 Datasheet - Page 58

• Manufacturer Part Number: saa7825
• Description: Cd Audio Decoder, Digital Servo And Filterless Dac With Integrated Pre-amp And Laser Control
• Manufacturer: NXP Semiconductors

Philips Semiconductors
8
Table 28 foc_parm1 parameter: focus end lead
2003 Aug 13
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
foc_pole_lead value
SUMMARY OF SERVO COMMAND PARAMETERS
VALUES
defect_det_sw
foc_parm1
otd_select
xxx1 1100
xxx1 1000
xxx0 0000
xxx0 1000
xxx0 1100
xxx1 1101
xxx1 1001
xxx0 0001
xxx0 1001
xxx0 1101
xxx1 1110
xxx1 1010
xxx0 0010
xxx0 1010
xxx0 1110
xxx1 1111
xxx1 1011
xxx0 0011
xxx0 1011
x11x xxxx
x10x xxxx
x00x xxxx
x01x xxxx
0xxx xxxx
1xxx xxxx
frequency, defect detector, offtrack detector
(binary)
influence focus and radial
defect detector does not
focus and radial hold on
focus hold on defect
undefined, reserved
Offtrack detector
frequency f
ON track active 1
ON track active 0
Focus end lead
Defect detector
defect detector
detector
10.22
11.46
12.69
15.13
17.54
19.93
22.28
1.97
2.29
2.61
2.94
3.26
3.90
4.55
5.19
5.82
6.46
7.72
8.98
3
kHz
58
Table 29 foc_parm2 parameter: focus low-pass start
foc_pole_noise value
detector_arr
foc_parm2
xxx1 1100
xxx1 1000
xxx0 0000
xxx0 1000
xxx0 1100
xxx1 1101
xxx1 1001
xxx0 0001
xxx0 1001
xxx0 1101
xxx1 1110
xxx1 1010
xxx0 0010
xxx0 1010
xxx0 1110
xxx1 1111
xxx1 1011
xxx0 0011
xxx0 1011
xx1x xxxx
xx0x xxxx
frequency, focusing system
(binary)
Focus low-pass start
Focusing system
frequency f
Objective specification
double foucault
single foucault
10.22
11.46
12.69
15.13
17.54
19.93
22.28
25.40
30.26
35.08
39.86
44.56
SAA7825
3.90
4.55
5.19
5.82
6.46
7.72
8.98
4
kHz