SAA7824 datasheet(12/89 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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12 / 89 page

2003 Oct 01

12

Philips Semiconductors

Product speciﬁcation

CD audio decoder, digital servo and ﬁlterless

DAC with integrated pre-amp and laser control

SAA7824

Table 3

Registers relating to the DC offset cancellation

SHADEN BITS

SHADOW

REGISTER

ADDRESS

DATA

FUNCTION

INITIAL

10

(bank 2)

C

DC offset

measurement

times

1100

XX00

settling time = 354

µs

reset

XX01

settling time = 1 ms

−

XX10

settling time = 2 ms

−

XX11

settling time = 10 ms

−

11

(bank 3)

3

diode selection

for DC offset

measurement

0011

0000

select D1

reset

0001

select D1

−

0010

select D2

−

0011

select D3

−

0100

select D4

−

0101

select R1

−

0110

select R2

−

0111

select D1

−

C

STATUS pin

control

1100

X00X

STATUS pin outputs

decoder status register

information

reset

X01X

STATUS pin outputs DC

offset ready ﬂag

−

X10X

STATUS pin outputs DC

offset value

−

7

DC cancellation

levels

0111

multi-write

(9

× 4 bits)

DC cancellation values for

diodes D1 to D4 and R1

and R2; see Table 20

−

handbook, full pagewidth

MBL440

D7

D6

D5

D4

D3

D2

D1

D0

D1

272.1/n

µs

2.19/n

µs

Fig.6 Serial data format for DC offset data.

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