ADSP21020 AD [Analog Devices], ADSP21020 Datasheet - Page 22

• Manufacturer Part Number: ADSP21020
• Description: 32/40-Bit IEEE Floating-Point DSP Microprocessor
• Manufacturer: AD [Analog Devices]

ADSP-21020
IEEE 1149.1 Test Access Port
Parameter
Timing Requirement:
t
t
t
t
t
t
Switching Characteristic:
t
t
NOTES
*DT = t
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.
TCK
STAP
HTAP
SSYS
HSYS
TRSTW
DTDO
DSYS
C
TCK Period
TDI, TMS Setup before TCK High
TDI, TMS Hold after TCK High
System Inputs Setup before TCK High 7
System Inputs Hold after TCK High
TRST Pulse Width
TDO Delay from TCK Low
System Outputs Delay from TCK Low
– 50 ns
Min
50
5
6
9
K/B/T Grade K/B/T Grade B/T Grade
200
20 MHz
Max
15
26
Min
40
5
6
7
9
160
25 MHz
–22–
Max
15
26
Min Max Min Max Min
33
5
6
7
9
132
30 MHz
15
26
30
5
6
7
9
120
33.3 MHz Frequency Dependency*
K Grade
26
15
t
CK
Max
ns
ns
ns
ns
ns
ns
ns
ns
Unit
REV. C