msm7630 Oki Semiconductor, msm7630 Datasheet - Page 58

• Manufacturer Part Number: msm7630
• Description: Universal Speech Processor
• Manufacturer: Oki Semiconductor

¡ Semiconductor
6. DRAM Access
There are two MSM7630 interfaces with DRAM: one when byte position is specified by CAS, and one
when byte position is specified by WE. This is set by the DRAM register’s TP field.
An interface example when byte position is specified by CAS is shown below.
An interface example when byte position is specified by WE is shown below.
Refer to the timing chart for basic timing of DRAM accesses.
MSM7630
MSM7630
CAS [0 : 1]
CAS [0 : 1]
RAS
RAS
Axx
Axx
WE
WE
Axx
RAS
CAS
WE
Axx
RAS
CAS
WE
DRAM
DRAM
Dxx
Dxx
Data
Data
External Bus
External Bus
MSM7630
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