GXM Datasheet, PDF (193/244 Pages) National Semiconductor (TI) – Geode™ GXm Processor Integrated x86 Solution with MMX Support

Electrical Specifications (Continued)
Table 7-12. JTAG AC Specification
Symbol
Parameter
Min
Max
TCK Frequency (MHz)
t1
TCK Period
t2
TCK High Time
t3
TCK Low Time
t4
TCK Rise Time
t5
TCK Fall Time
t6
TDO Valid Delay
t7
Non-test Outputs Valid Delay
t8
TDO Float Delay
t9
Non-test Outputs Float Delay
t10
TDI, TMS Setup Time
t11
Non-test Inputs Setup Time
t12
TDI, TMS Hold Time
t13
Non-test Inputs Hold Time
25
40
10
10
4
4
3
25
3
25
30
36
8
8
7
7
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t1
t2
V_IH(Min)
1.5 V
V_IL(Max)
TCK
t4
t3
t5
Figure 7-11. TCK Timing and Measurement Points
Revision 3.1
193
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