CS4350 datasheet(12/39 Pages) CIRRUS

12 / 39 page

DS691A3

CS4350

SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE

(Inputs: Logic 0 = GND, Logic 1 = VLS, CL =20pF)

Notes:

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

Input Sample Rate

Single-Speed Mode

kHz

Double-Speed Mode

108

kHz

Quad-Speed Mode

120

216

kHz

LRCK Duty Cycle (Non-TDM Mode)

SCLK Frequency

-51.2

MHz

SCLK High Time

tsckh

SCLK Low Time

tsckl

SDIN Setup Time Before SCLK Rising Edge

tds

SDIN Hold Time After SCLK Rising Edge

tdh

Non-TDM Mode (refer to Figure 3)

LRCK Edge to SCLK Rising Edge

tlcks

SCLK Rising Edge to LRCK Edge

tlckd

TDM Mode (refer to Figure 4)

LRCK High Time

tlrckh

163

SCLK Rising to LRCK Falling Edge

tfsh

LRCK Rising Edge to SCLK Rising Edge

tfss

tds

LRCK

(Input)

tdh

tsclkh

tsclkl

tfsh

tfss

SCLK

(Input)

SDIN

(Input)

MSB

MSB-1

tlrckh

tds

MSB

tdh

MSB-1

LRCK

(input)

SCLK

(input)

SDIN

(input)

tsckh

tsckl

tlcks

tlckd

Figure 3. Serial Port Timing, Non-TDM Mode

Figure 4. Serial Port Timing, TDM Mode

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