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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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