adsp-21371 Analog Devices, Inc., adsp-21371 Datasheet - Page 43

• Manufacturer Part Number: adsp-21371
• Description: Sharc Processor
• Manufacturer: Analog Devices, Inc.

JTAG Test Access Port and Emulation
Table 41. JTAG Test Access Port and Emulation
1
2
Parameter
Timing Requirements
t
t
t
t
t
t
Switching Characteristics
t
t
System Inputs = AD15–0, CLKCFG1–0, RESET, BOOTCFG1–0, DAI_Px, and FLAG3–0.
System Outputs = DAI_Px, AD15–0, RD, WR, FLAG3–0, CLKOUT, EMU, and ALE.
TCK
STAP
HTAP
SSYS
HSYS
TRSTW
DTDO
DSYS
1
1
2
TCK Period
TDI, TMS Setup Before TCK High
TDI, TMS Hold After TCK High
System Inputs Setup Before TCK High
System Inputs Hold After TCK High
TRST Pulse Width
TDO Delay from TCK Low
System Outputs Delay After TCK Low
SYSTEM
OUTPUTS
SYSTEM
INPUTS
TCK
TMS
TDI
TDO
t
DTDO
Figure 33. IEEE 1149.1 JTAG Test Access Port
Rev. 0 | Page 43 of 48 | June 2007
t
TCK
t
t
DSYS
SSYS
t
STAP
t
HTAP
t
HSYS
Min
t
5
6
7
18
4
CK
t
CK
Max
7
t
CK
/ 2 + 7
ADSP-21371
Unit
ns
ns
ns
ns
ns
ns
ns
ns