Cirrus-logic CS4953xx Manuel d'utilisateur télécharger pdf (Page 25)

CS4953xx Data Sheet

32-bit Audio Decoder DSP Family

DS705F2 25

Figure 14. Digital Audio Output Timing, Slave Mode

5.18 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

sdclkh

2.3 — — ns

SD_CLKIN low time

sdclkl

2.3 — — ns

SD_CLKOUT rise/fall time

sdclkrf

——1ns

SD_CLKOUT Frequency

——150—MHz

SD_CLKOUT duty cycle

—45 —55%

SD_CLKOUT rising edge to signal valid

sdcmdv

——3.8ns

Signal hold from SD_CLKOUT rising edge

sdcmdh

—1.1—ns

SD_CLKOUT rising edge to SD_DQMn valid

sddqv

—3.8—ns

SD_DQMn hold from SD_CLKOUT rising edge

sddqh

1.38 — — ns

SD_DATA valid setup to SD_CLKIN rising edge

sddsu

1.3 — — ns

SD_DATA valid hold to SD_CLKIN rising edge

sddh

2.1 — — ns

SD_CLKOUT rising edge to ADDRn valid

sdav

—3.8—ns

DAO_SCLK

DAO_LRCLK

DAO_Dx

daoslrts

daosclk

DAO_SCLK

DAO_LRCLK

daosstlr

daosdv

daosclk

DAO_Dx

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 36 37

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Cirrus-logic CS4953xx Manuel d'utilisateur Page 25

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