參數(shù)資料
型號(hào): ADSP-21020
廠商: Analog Devices, Inc.
元件分類: 數(shù)字信號(hào)處理
英文描述: 32/40-Bit IEEE Floating-Point DSP Microprocessor(浮點(diǎn)型DSP處理器)
中文描述: 32/40 IEEE浮點(diǎn)DSP微處理器(浮點(diǎn)型DSP的處理器)
文件頁數(shù): 22/32頁
文件大?。?/td> 424K
代理商: ADSP-21020
ADSP-21020
REV. C
–22–
IEEE 1149.1 Test Access Port
K/B/T Grade K/B/T Grade B/T Grade
K Grade
20 MHz
Min
25 MHz
Min
30 MHz
Min Max Min Max Min
33.3 MHz Frequency Dependency*
Parameter
Max
Max
Max
Unit
Timing Requirement:
t
TCK
TCK Period
t
STAP
TDI, TMS Setup before TCK High
t
HTAP
TDI, TMS Hold after TCK High
t
SSYS
System Inputs Setup before TCK High 7
t
HSYS
System Inputs Hold after TCK High
t
TRSTW
TRST
Pulse Width
50
5
6
40
5
6
7
9
160
33
5
6
7
9
132
30
5
6
7
9
120
t
CK
ns
ns
ns
ns
ns
ns
9
200
Switching Characteristic:
t
DTDO
TDO Delay from TCK Low
t
DSYS
System Outputs Delay from TCK Low
15
26
15
26
15
26
15
26
ns
ns
NOTES
*DT = t
– 50 ns
System Inputs = PMD47-0, PMACK,
PMTS
, DMD39-0, DMACK,
DMTS
, CLKIN,
IRQ3 0
,
RESET
, FLAG3-0,
BR
.
System Outputs = PMA23-0,
PMS1-0
,
PMRD
,
PMWR
, PMD47-0, PMPAGE, DMA31-0,
DMS1-0
,
DMRD
,
DMWR
, DMD39-0, DMPAGE, FLAG3-0,
BG
,
TIMEXP.
See the IEEE 1149.1 Test Access Port chapter of the
ADSP-21020 User’s Manual
for further detail.
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