CS4525-CNZR(2008) Просмотр технического описания (PDF) - Cirrus Logic

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CS4525-CNZR
(Rev.:2008)

30 W Digital Audio Amplifier with Integrated ADC

Cirrus Logic 

CS4525

SERIAL AUDIO INPUT PORT SWITCHING SPECIFICATIONS

AGND = DGND = PGND = 0 V; TA = 25°C; VD = 3.3 V; Inputs: Logic 0 = DGND; Logic 1 = VD.

Parameters

Symbol

Min

Nominal

Supported Input Sample Rates

28.5

32

FSI

39.5

39.5

44.1

48

86.4

96

LRCK Duty Cycle

45

-

SCLK Frequency

SCLK Duty Cycle

(Note 8),(Note 9) 1/tp

FSI*2*Nbits

-

45

-

LRCK Setup Time Before SCLK Rising Edge

ts(LK-SK)

40

-

SDIN Setup Time Before SCLK Rising Edge

ts(SD-SK)

25

-

SDIN Hold Time After SCLK Rising Edge

th

10

-

RST pin Low Pulse Width

(Note 10)

1

-

Max

35.2

52.8

52.8

105.6

55

FCLK/3

55

-

-

-

-

Units

kHz

kHz

kHz

kHz

%

Hz

%

ns

ns

ns

ms

Notes:

8. FCLK is the frequency of the crystal connected to the XTI/XTO pins or the input SYS_CLK signal.

9. Nbits is the number of bits per sample of the serial digital input.

10. After powering up the CS4525, RST should be held low until the power supplies and clocks are stable.

LRCK

SCLK

ts(LK-SK)

//

//

tP

//

tr

tf

//

SDIN

ts(SD-SK)

// th

MSB

//

MSB-1

Figure 7. Serial Audio Input Port Timing

DS726PP3

21

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