參數(shù)資料
型號(hào): DSP56852E
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號(hào)控制器
文件頁(yè)數(shù): 24/48頁(yè)
文件大?。?/td> 731K
代理商: DSP56852E
56852 Technical Data, Rev. 8
24
Freescale Semiconductor
Some of the parameters contain two sets of numbers. These parameters have two different paths and
clock edges that must be considered. Check both sets of numbers and use the smaller result. The
appropriate entry may change if the operating frequency of the part changes.
The timing of write cycles is different when WWS = 0 than when WWS > 0. Therefore, some parameters
contain two sets of numbers to account for this difference. The “Wait States Configuration” column of
Table 4-7
should be used to make the appropriate selection.
Figure 4-10 External Memory Interface Timing
t
DRD
t
RDD
t
AD
t
DOH
t
DOS
t
DWR
t
RDWR
t
WAC
t
WRRD
t
WR
t
AWR
t
WRWR
t
ARDD
t
RDA
t
RDRD
t
RD
t
ARDA
Data Out
Data In
A0-Axx,CS
RD
WR
D0-D15
Note: During read-modify-write instructions and internal instructions, the address lines do not change state.
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