参数资料
型号: 951200201
厂商: ATMEL CORP
元件分类: 数字信号处理外设
英文描述: 40-BIT, DSP-FLOATING POINT PROCESSOR, QFP256
封装: MQFP-256
文件页数: 27/50页
文件大小: 702K
代理商: 951200201
33
TSC21020F
4153H–AERO–04/07
Flags
Figure 7. Flags
Parameter
20 MHz
Frequency
Dependency(1)
Unit
Min
Max
Min
Max
t
SFI
(2) FLAG3-0
IN Setup before CLKIN
High
19
19 +
5DT/16
ns
tHFI
(2) FLAG3-0
IN Hold after CLKIN High
0
12 +
7DT/16
ns
t
DWRFI
(2) FLAG3-0
IN Delay from xRD,
xWR Low
12
ns
t
HFIWR
(2) FLAG3-0
IN Hold after xRD, xWR
Deasserted
0
ns
tDFO FLAG3-0OUT Delay from CLKIN High
24
ns
t
HFO FLAG3-0OUT Hold after CLKIN High
5
ns
t
DFOE CLKIN High to FLAG3-0OUT
Enable(3)
1
ns
t
DFOD CLKIN High to FLAG3-0OUT Disable
24
ns
Notes:
1. DT = t
CK - 50 ns
2. Flag inputs meeting these setup and hold times will affect conditional operations in
the next instruction cycle. See the Hardware Configuration chapter of the ADSP-
21020 User's Manual from Analog Devices for additional flag servicing information.
3. Guaranteed by design.
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