CS44L11 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS44L11

Low Voltage Class-D PWM Headphone Amplifier

Cirrus Logic 

CS44L11

LRCK

(kHz)

96

96

88.2

88.2

DBS = 1

MCLKDIV = 0

MCLK/

LRCK

128

256

128

256

MCLK

(MHz)

12.288

24.576

11.2896

22.5792

DBS = 1

MCLKDIV = 1

MCLK/

LRCK

256

512

256

512

MCLK

(MHz)

24.576

49.152

22.5792

45.1584

FRQSFT1 FRQSFT0

0

0

0

0

0

0

0

0

CLKDIV1

0

1

0

1

PWM

Switching

Freq.

CLKDIV0 (kHz)

0

384

0

0

352.8

0

Table 13. Double-Speed Clock Modes - Control Port Mode

4.9.5

De-Emphasis Control (DEM)

Default = 00

00 - Disabled

01 - 44.1 kHz

10 - 48 kHz

11 - 32 kHz

Function:

Selects the appropriate digital filter to maintain the standard 15 µs/50 µs digital de-emphasis filter re-

sponse at 32, 44.1 or 48 kHz sample rates (see Figure 6).

Note: De-emphasis is not available in Double-Speed Mode.

Gain

dB

0dB

T1=50 µs

-10dB

T2 = 15 µs

F1

3.183 kHz

F2 Frequency

10.61 kHz

Figure 6. De-Emphasis Curve

22

DS640PP4

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