CS497014 datasheet(23/31 Pages) CIRRUS

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CS4970x4 Data Sheet

32-bit High Definition Audio Decoder DSP Family

DS752F1

Figure 14. Digital Audio Output Timing, Slave Mode (Relationship LRCLK to SCLK)

5.17 Switching Characteristics — SDRAM Interface

Refer to Figure 15 through Figure 18.

(SD_CLKOUT = SD_CLKIN)

Parameter

Symbol

Min

Typical

Max

Unit

SD_CLKIN high time

tsdclkh

2.3

——

SD_CLKIN low time

tsdclkl

2.3

——

SD_CLKOUT rise/fall time

tsdclkrf

——

1ns

SD_CLKOUT Frequency

——

150

—

MHz

SD_CLKOUT duty cycle

—

SD_CLKOUT rising edge to signal valid

tsdcmdv

——

3.8

Signal hold from SD_CLKOUT rising edge

tsdcmdh

—

1.1

—

SD_CLKOUT rising edge to SD_DQMn valid

tsddqv

—

3.8

—

SD_DQMn hold from SD_CLKOUT rising edge

tsddqh

1.38

——

SD_DATA valid setup to SD_CLKIN rising edge

tsddsu

1.3

——

SD_DATA valid hold to SD_CLKIN rising edge

tsddh

2.1

——

SD_CLKOUT rising edge to ADDRn valid

tsdav

—

3.8

—

DAO_SCLK

DAO_LRCLK

DAO_Dx

tdaoslrts

tdaosclk

DAO_SCLK

DAO_LRCLK

tdaosstlr

tdaosdv

tdaosclk

DAO_Dx

Note: In these diagrams, Falling edge is the inactive edge of DAO_SCLK

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