SAA7824 datasheet(52/89 Pages) PHILIPS

Part #	SAA7824

Description	CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control (PhonIC)

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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52 / 89 page

2003 Oct 01

52

Philips Semiconductors

Product speciﬁcation

CD audio decoder, digital servo and ﬁlterless

DAC with integrated pre-amp and laser control

SAA7824

Table 20 Bank 3 new shadow register settings (single write)

Table 21 Bank 3 new shadow register settings (multiple write)

Note

1. Register elements are described in Tables 26 and 27.

SHADEN

BITS

SHADOW

REGISTER

ADDRESS

DATA

FUNCTION

INITIAL

11

(bank 3)

3

diode selection

for DC offset

measurement

0011

X000

select D1

reset

X001

select D1

−

X010

select D2

−

X011

select D3

−

X100

select D4

−

X101

select R1

−

X110

select R2

−

X111

select D1

−

3

laser power

control 2

0XXX

60% (laser power control

1=0)

reset

87% (laser power control

1=1)

see shadow register A

(bank 2)

1XXX

73% (laser power control

1=0)

−

100% (laser power control

1=1)

see shadow register A

(bank 2)

C

enable

equalizer

1100

XXX0

equalizer disabled and

powered-down

reset

XXX1

equalizer enabled

−

C

STATUS pin

control

000X

STATUS pin outputs

decoder status register

information

reset

001X

STATUS pin outputs DC

offset ready ﬂag

−

010X

STATUS pin outputs DC

offset value

−

SHADEN BITS

SHADOW

REGISTER

ADDRESS

SIZE (DATA

NIBBLES)

REGISTER ELEMENTS(1)

11

(bank 3)

7

DC cancellation

levels

0111

9

<r2_off> <r1_off> <d4_off> <d3_off>

<d2_off> <d1_off>

A

analog FE

control

1010

4

<hp_ﬁlter_sel> <eq_speed_sel>

<slicer_slew> <hf_gain>

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