17 jtag interface, Figure 9-58, Tck measurement points and timing diagram – AMD Geode SC1201 User Manual
Page 435: Table 9-48, Jtag timing parameters
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AMD Geode™ SC1200/SC1201 Processor Data Book
435
Electrical Specifications
32579B
9.3.17
JTAG Interface
Figure 9-58. TCK Measurement Points and Timing Diagram
Table 9-48. JTAG Timing Parameters
Symbol
Parameter
Min
Max
Unit
Comments
TCK frequency
25
MHz
t
1
TCK period
40
ns
t
2
TCK high time
10
ns
t
3
TCK low time
10
ns
t
4
TCK rise time
4
ns
t
5
TCK fall time
4
ns
t
6
TDO valid delay
3
25
ns
t
7
Non-test outputs valid delay
3
25
ns
50 pF load
t
8
TDO float delay
30
ns
t
9
Non-test outputs float delay
36
ns
t
10
TDI, TMS setup time
8
ns
t
11
Non-test inputs setup time
8
ns
t
12
TDI, TMS hold time
7
ns
t
13
Non-test inputs hold time
7
ns
V
IH(Min)
V
IL(Max)
1.5V
T
CK
t
1
t
3
t
5
t
2
t
4
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