12

DS691A3

CS4350

SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE

Notes:

7.

RMCK output frequency depends on the input LRCK frequency. See Section 4.1 and Section 4.2 for more details.

Parameters

Symbol

Min

Max

Units

RMCK Output Frequency (Note 7)

7.680

51.2

MHz

RMCK Output Duty Cycle

45

55

%

Input Sample Rate

Single-Speed Mode

Fs

30

54

kHz

Double-Speed Mode

Fs

60

108

kHz

Quad-Speed Mode

Fs

120

216

kHz

LRCK Duty Cycle (Non-TDM Mode)

40

60

%

SCLK Frequency

-51.2

MHz

SCLK High Time

8-

ns

SCLK Low Time

8-

ns

SDIN Setup Time Before SCLK Rising Edge

3-

ns

SDIN Hold Time After SCLK Rising Edge

5-

ns

Non-TDM Mode (refer to Figure 3)

LRCK Edge to SCLK Rising Edge

6-

ns

SCLK Rising Edge to LRCK Edge

5-

ns

TDM Mode (refer to Figure 4)

LRCK High Time

163

ns

SCLK Rising to LRCK Falling Edge

5-

ns

LRCK Rising Edge to SCLK Rising Edge

5-

ns

LRCK

(Input)

SCLK

(Input)

SDIN

(Input)

MSB

MSB-1

MSB

MSB-1

LRCK

(input)

SCLK

(input)

SDIN

(input)

Figure 3. Serial Port Timing, Non-TDM Mode

Figure 4. Serial Port Timing, TDM Mode