Jtag Interface; Table 9-45. Jtag Timing Parameters; Figure 9-57. Tck Measurement Points And Timing Diagram - AMD Geode SC3200 Data Book

32581C
9.3.16

JTAG Interface

Symbol Parameter
TCK frequency
t TCK period
1
t TCK high time
2
t TCK low time
3
t TCK rise time
4
t TCK fall time
5
t TDO valid delay
6
t Non-test outputs valid delay
7
t TDO float delay
8
t Non-test outputs float delay
9
t TDI, TMS setup time
10
t Non-test inputs setup time
11
t TDI, TMS hold time
12
t Non-test inputs hold time
13
V
IH(Min)
1.5V
V
IL(Max)
T
CK

Figure 9-57. TCK Measurement Points and Timing Diagram

418

Table 9-45. JTAG Timing Parameters

Min
40
10
10
3
3
8
8
7
7
t 1
t 2
t 4
Max Unit Comments
25 MHz
ns
ns
ns
4 ns
4 ns
25 ns
25 ns 50 pF load
30 ns
36 ns
ns
ns
ns
ns
t 3
t 5
AMD Geode™ SC3200 Processor Data Book
Electrical Specifications