UDA1335H 데이터 시트보기 (PDF) - Philips Electronics

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UDA1335H

Universal Serial Bus (USB) Audio Playback Recording Peripheral (APRP)

Philips Electronics 

Philips Semiconductors

Universal Serial Bus (USB) Audio

Playback Recording Peripheral (APRP)

Preliminary specification

UDA1335H

Table 3 ADC clock frequencies and sample frequencies based upon using the APLL as a clock source

(analog input topology 1), see note 1.

APLL CLOCK

FREQUENCY (MHz)

8.1920

11.2896

12.2880

DIVIDE FACTOR Q ADC CLOCK FREQUENCY (MHz) SAMPLE FREQUENCY (kHz)

1

4.096

32

2

2.048

16

4

1.024

8

8

0.512 (not supported)

4 (not supported)

1

5.6448

44.1

2

2.8224

22.05

4

1.4112

11.025

8

0.7056

5.5125

1

6.144

48

2

3.072

24

4

1.536

12

8

0.768

6

Note

1. By using the APLL as a clock source 12 sample frequencies will be reported to the USB host.

Table 4 ADC clock frequencies and sample frequencies based upon using the OSCAD as a clock source

(analog input topology 4), see note 1

OSCAD CLOCK

FREQUENCY (MHz)

fosc(2)

DIVIDE FACTOR Q ADC CLOCK FREQUENCY (MHz) SAMPLE FREQUENCY (kHz)

Q(3)

fosc/(2Q)

fosc/(256Q)(4)

Notes

1. By using the OSCAD as a clock source, the sample frequency and the Q dividing factor must be filled in the

configuration map. Only this one sample frequency will be reported to the USB host.

2. The oscillator frequency (and therefore the crystal) of OSCAD must be between 8.192 and 14.08 MHz.

3. The Q factor can be 1, 2, 4 or 8.

4. Sample frequencies below 5 kHz and above 55 kHz are not supported.

1998 Aug 28

11

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