參數(shù)資料
型號(hào): IMST400
文件頁數(shù): 30/74頁
文件大小: 563K
代理商: IMST400
IMS T400
/ 74
30
MemReq
MemGranted
Configuration
sequence
D
D R
I
E
B
Reset
D
I
E
R
B
Pre– and post–configuration delays (figure 3.3)
Internal configuration sequence
External configuration sequence
Initial refresh sequence
Bootstrap sequence
Figure 5.14
IMS T400 DMA sequence at reset
MemReq
MemGranted
MemnotWrD0
MemAD2–31
Read or write
Refresh
Read or write
External memory
interface cycles
MemnotRfD1
Figure 5.15
IMS T400 operation of
MemReq
,
MemGranted
with external, refresh memory cycles
MemReq
MemGranted
MemnotRfD1
MemAD2–31
EMI cycle
External memory
interface activity
MemnotWrD0
T1 T2 T3 T4 T5 T6
EMI cycle
T1 T2 T3 T4 T5 T6
Internal memory cycles
Figure 5.16
IMS T400 operation of
MemReq
,
MemGranted
with external, internal memory cycles
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