DSP56301 datasheet(75/124 Pages) FREESCALE

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AC Electrical Characteristics

DSP56301 Technical Data, Rev. 10

Freescale Semiconductor

2-49

2.5.11 JTAG Timing

Figure 2-45.

GPIO Timing

Table 2-25.

JTAG Timing

No.

Characteristics1,2

All frequencies

Unit

Min

Max

500

TCK frequency of operation (1/(T

C ×

3); maximum 22 MHz)

0.0

22.0

MHz

501

TCK cycle time in Crystal mode

45.0

—

502

TCK clock pulse width measured at 1.5 V

20.0

—

503

TCK rise and fall times

0.0

3.0

504

Boundary scan input data setup time

5.0

—

505

Boundary scan input data hold time

24.0

—

506

TCK low to output data valid

0.0

40.0

507

TCK low to output high impedance

0.0

40.0

508

TMS, TDI data setup time

5.0

—

509

TMS, TDI data hold time

25.0

—

510

TCK low to TDO data valid

0.0

44.0

511

TCK low to TDO high impedance

0.0

44.0

512

TRST assert time

100.0

—

513

TRST setup time to TCK low

40.0

—

Notes:

VCC = 3.3 V ± 0.3 V; TJ = −40°C to +100 °C, CL = 50 pF

All timings apply to OnCE module data transfers because it uses the JTAG port as an interface.

Valid

GPIO

(Input)

GPIO

(Output)

CLKOUT

(Output)

Fetch the instruction MOVE X0,X:(R0); X0 contains the new value of GPIO

and R0 contains the address of GPIO data register.

A[0–23]

490

491

492

494

493

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