Cirrus Logic CS49DV8C - Manual (Page 22)

22 Copyright 2008 Cirrus Logic, Inc. DS868PP2
CS49DV8C Data Sheet
32-bit Audio DSP Family
5.16 Switching Characteristics — SDRAM Interface
Refer to Figure 11 through Figure 14 .
(SD_CLKOUT = SD_CLKIN)
Parameter Symbol Min Typical Max Unit
SD_CLKIN high time t
sdclkh
2.3 - ns
SD_CLKIN low time t
sdclkl
2.3 - ns
SD_CLKOUT rise/fall time t
sdclkrf
- 1 ns
SD_CLKOUT Frequency 150 MHz
SD_CLKOUT duty cycle - 45 55 %
SD_CLKOUT rising edge to signal valid t
sdcmdv
- 3.8 ns
Signal hold from SD_CLKOUT rising edge t
sdcmdh
1.1 - ns
SD_CLKOUT rising edge to SD_DQMn valid t
sddqv
- 3.8 - ns
SD_DQMn hold from SD_CLKOUT rising edge t
sddqh
1.38 - ns
SD_DATA valid setup to SD_CLKIN rising edge t
sddsu
1.3 - ns
SD_DATA valid hold to SD_CLKIN rising edge t
sddh
1.38 - ns
SD_CLKOUT rising edge to ADDRn valid t
sdav
- 3.8 - ns