MPC2605

MOTOROLA

24

JTAG

AC OPERATING CONDITIONS AND CHARACTERISTICS

FOR THE TEST ACCESS PORT (IEEE 1149.1)

(TJ = 20 to + 110°C, Unless Otherwise Noted)

Input Timing Measurement Reference Level

1.5 V

. . . . . . . . . . . . . . .

Input Pulse Levels

0 to 3.0 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Rise/Fall Time

3 ns

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Measurement Timing Level

1.5 V

. . . . . . . . . . . . . . . . . . . . . . .

Output Load

50

Ω Termination to 1.5 V

. . . . . . . . . . . . . . . . . . . . . . . .

TAP CONTROLLER TIMING

P

Sb l

MPC2605–66

Ui

N

Parameter

Symbol

Min

Max

Unit

Notes

Cycle Time

tCK

30

—

ns

Clock High Time

tCKH

12

—

ns

1

Clock Low Time

tCKL

12

—

ns

1

Clock Low to Output Valid

tA

5

9

ns

Clock Low to Output High–Z

tCKZ

0

9

ns

2

Clock Low to Output Active

tCKX

0

9

ns

3, 4

Setup Times:

TMS

TDI

ts

tsd

2

—

ns

1

Hold Times:

TMS

TDI

th

thd

2

—

ns

1

NOTES:

1. This parameter is sampled and not 100% tested.

2. TDO will High–Z from a clock low edge depending on the current state of the TAP state machine.

3. TDO is active only in the SHIFT–IR and SHIFT–DR state of the TAP state machine.

4. Transition is measured

± 500 mV from steady–state voltage. This parameter is sampled and not 100% tested.

TDI TEST

DATA IN

TCK TEST

CLOCK

tCK

TDO TEST

DATA OUT

tH

tCKX

tSD

tS

tHD

tA

tCKZ

TMS TEST

MODE SELECT

tCKH

tCKL

Figure 10. TAP Controller Timing