Cirrus Logic CS4970x4 - Manual (Page 24)

DS752F
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24
CS4
970x4
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32-bi
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Audio
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Figure 15. External Memory Interface - SDRAM Burst Read Cycle
Figure 16. External Memory Interface - SDRAM Burst Write Cycle
SD_CLKOUT
SD_CS#
SD_RAS#
SD_CAS#
SD_WE#
SD_DQMn
SD_An
SD_Dn
t
sddsu
t
sdclkrf t
sdcmdv
t
sdav
t
sddqv
t
sdcmdh
t
sddh
t
sddqh
CAS=2
LSP0 MSP0 LSP3 MSP3
SD_CLKIN
t
sdclkl
t
sdclkh
00 11
LSP1 MSP1 LSP2 MSP2
SD_CLKOUT
SD_CS#
SD_RAS#
SD_CAS#
SD_WE#
t
sdcmdv
t
sdcmdh
SD_Dn LSP0 MSP0 LSP1 MSP1 LSP2 MSP2 LSP3 MSP3
SD_An
SD_DQMn
t
sddqh
00 11
t
sddqv
t
sdav