SA1110 Datasheet, PDF (383/406 Pages) Intel Corporation – Intel StrongARM SA-1110 Microprocessor

Boundary-Scan Test Interface
Table 16-1 shows the SA-1110 boundary-scan interface timing specifications.
Table 16-1. SA-1110 Boundary-Scan Interface Timing
Symbol
Parameter
Minimum Typical Maximum
Units
Notes
Tbscl
TCK low period
50
–
–
ns
8
Tbsch
TCK high period
50
–
–
ns
8
Tbsis
TDI,TMS setup to TCr
10
–
–
ns
–
Tbsih
TDI,TMS hold from TCr
10
–
–
ns
–
Tbsoh
TDO hold time
5
–
–
ns
1
Tbsod
TCf to TDO valid
–
–
40
ns
1
Tbsss
I/O signal setup to TCr
5
–
–
ns
4
Tbssh
I/O signal hold from TCr
20
–
–
ns
4
Tbsdh
Data output hold time
5
–
–
ns
5
Tbsdd
TCf to data output valid
–
–
40
ns
–
Tbsoe
TDO enable time
5
–
–
ns
1,2
Tbsoz
TDO disable time
–
–
40
ns
1,3
Tbsde
Data output enable time
5
–
–
ns
5,6
Tbsdz
Data output disable time
–
–
40
ns
5,7
Tbsr
Reset period
30
—
—
ns
—
Tbsrs
TMS setup to TRr
10
—
—
ns
8
Tbsrh
TMS hold from TRr
10
—
—
ns
8
NOTES:
1. Assumes a 25-pF load on TDO. Output timing derates at 0.072 ns/pF of extra load applied.
2. TDO enable time applies when the TAP controller enters the Shift-DR or Shift-IR states.
3. TDO disable time applies when the TAP controller leaves the Shift-DR or Shift-IR states.
4. For correct data latching, the I/O signals (from the core and the pads) must be set up and held with respect
to the rising edge of TCK in the CAPTURE-DR state of the SAMPLE/PRELOAD and EXTEST instructions.
5. Assumes that the data outputs are loaded with the ac test loads.
6. Data output enable time applies when the boundary-scan logic is used to enable the output drivers.
7. Data output disable time applies when the boundary scan is used to disable the output drivers.
8. TCK may be stopped indefinitely in either the low or high phase.
SA-1110 Developer’s Manual
16-9