CS4392 Просмотр технического описания (PDF) - Cirrus Logic

Номер в каталоге

Компоненты Описание

Список матч

CS4392

24-Bit, 192 kHz Stereo DAC with Volume Control

Cirrus Logic 

CS4392

3.4 Interpolation Filter

To accommodate the increasingly complex requirements of digital audio systems, the CS4392 incorpo-

rates selectable interpolation filters for each mode of operation. A fast and a slow roll-off filter is available

in each of Single, Double, and Quad Speed modes. These filters have been designed to accommodate a

variety of musical tastes and styles. Bit 5 of the Mode Control 3 register (06h) is used to select which filter

is used. Filter specifications can be found in Section 8, and filter response plots can be found in Figures 12

to 35.

In stand-alone mode, only the fast roll-off filter is available.

3.5 System Clocking

The required MCLK to LRCK and suggested SCLK to LRCK ratios are outlined in table 1. MCLK can be

at any phase in regards to LRCK and SCLK. SCLK, LRCK and SDATA must meet the phase and timing

relationships outlined in Section 7. Some common MCLK frequencies have been outlined in tables 2 to 4.

Single Speed

Double Speed

Quad Speed

MCLK/LRCK

256, 384, 512, 768, 1024*

128, 192, 256, 384, 512*

64

96

128, 256*

192

SCLK/LRCK

32, 48, 64, 96, 128

32, 48, 64

32 (16 bits only)

32, 48

32, 64

32, 48, 64, 96

LRCK

Fs

Fs

Fs

Fs

Fs

Fs

Table 1. Clock Ratios

Sample Rate

(kHz)

32

44.1

48

256x

8.1920

11.2896

12.2880

MCLK (MHz)

384x

512x

12.2880

16.3840

16.9344

22.5792

18.4320

24.5760

768x

24.5760

33.8688

36.8640

Table 2. Single Speed (4 to 50 kHz sample rates) Common Clock Frequencies

See Note

1024x*

32.7680

45.1584

49.1520

Sample Rate

(kHz)

64

88.2

96

128x

8.1920

11.2896

12.2880

MCLK (MHz)

192x

256x

12.2880

16.3840

16.9344

22.5792

18.4320

24.5760

384x

24.5760

33.8688

36.8640

Table 3. Double Speed (50 to 100 kHz sample rates) Common Clock Frequencies

See Note

512x*

32.7680

45.1584

49.1520

Sample Rate

(kHz)

176.4

192

64x

11.2896

12.2880

MCLK (MHz)

96x

128x

16.9344

22.5792

18.4320

24.5760

192x

33.8688

36.8640

See Note

256x*

45.1584

49.1520

Table 4. Quad Speed (100 to 200 kHz sample rates) Common Clock Frequencies

*Note:These clocking ratios are only available in Control Port Mode when the MCLK Divide bit is enabled.

10

DS459PP3

Share Link: