May 1994

8

Philips Semiconductors

Preliminary specification

Stereo filter and codec

SAA2003

Crystal oscillators

The recommended crystal oscillator configuration is shown in Fig.6. The specified component values only apply to

crystals with a low equivalent series resistance of <40

Ω.

System reset

Reset must be active from system power-up for >1 ms. Reset must also be active for >1 ms after the falling edge of sleep

as shown in Fig.7.

Fig.5 Decoding mode.

handbook, full pagewidth

MEA804 - 1

DE–

FORMATTER

PASC

data

input

scale factor

SCALE

FACTOR

ARRAY

AND ALLOCATION

DE-QUANTIZATION

CONTROL

MULTIPLY

allocation

sync/coding

quantified

samples

sub-band

samples

OUTPUT

CONTROL

SUB-BAND

FILTER

baseband

samples

SAA2003

40

41

42

43

R1

1 M

Ω

22.5792

MHz

X1

R2 220

Ω

C2 33 pF

C1 33 pF

R4

1 M

Ω

24.576

MHz

X2

R3 1 k

Ω

C3 33 pF

C4 33 pF

X22IN

X22OUT

X24IN

X24OUT

MBD621

Fig.6 Crystal oscillator components.