SPC5702BECLU datasheet(77/98 Pages) FREESCALE

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Electrical Characteristics

MPC560xS Microcontroller Data Sheet Data Sheet, Rev. 1

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

3.16.2

Nexus Debug Interface

Figure 22. Nexus Clock Timing

Figure 23. Nexus Output Timing

Table 36. Nexus Debug Port Timing1

1 JTAG specifications in this table apply when used for debug functionality. All Nexus timing relative to MCKO is

measured from 50% of MCKO and 50% of the respective signal. Nexus timing specified at VDD = 3.0 V to 5.5V, TA

= -40 to 105 °C, and CL = 50 pF (Cl=30 pF on MCKO), with SRC = 0b11.

Num

Symbol

Characteristic

Min

Max

Unit

1tMCYC

CC2

2 Parameter values guaranteed by design.

MCKO Cycle Time

—

2tMDC

CC2

MCKO Duty Cycle

3tMDOV

CC2

MCKO Low to MDO Data Valid3

3 MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.

–2

4tMSEOV

CC2

MCKO Low to MSEO Data Valid3

–2

5tEVTOV

CC2

MCKO Low to EVTO Data Valid3

–2

6tEVTIPW

CC2

EVTI Pulse Width

—

tTCYC

7tEVTOPW

CC2

EVTO Pulse Width

—

tMCYC

8tTCYC

CC2

TCK Cycle Time4

4 The system clock frequency needs to be three times faster that the TCK frequency.

100

—

9tTDC

CC2

TCK Duty Cycle

tNTDIS, tNTMSS

CC2

TDI, TMS Data Setup Time

—

tNTDIH, tNTMSH

CC2

TDI, TMS Data Hold Time

—

tJOV

CC2

TCK Low to TDO Data Valid

MCKO

MDO

MSEO

EVTO

Output Data Valid

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