MPC5533 datasheet(32/50 Pages) FREESCALE

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MPC5533 Microcontroller Data Sheet, Rev. 0.0

Electrical Characteristics

Freescale Semiconductor

3.13.3

Nexus Timing

Figure 10. Nexus Output Timing

Table 21. Nexus Debug Port Timing 1

1 JTAG specifications 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 = 1.35–1.65 V, VDDE = 2.25–3.6 V,

VDD33 and VDDSYN = 3.0–3.6 V, TA = TL to TH, and CL = 30 pF with DSC = 0b10.

Spec

Characteristic

Symbol

Min.

Max.

Unit

MCKO cycle time

tMCYC

1 2

2 The Nexus AUX port runs up to 82 MHz.

8tCYC

MCKO duty cycle

tMDC

MCKO low to MDO data valid 3

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

tMDOV

–1.5

3.0

MCKO low to MSEO data valid 3

tMSEOV

–1.5

3.0

MCKO low to EVTO data valid 3

tEVTOV

–1.5

3.0

EVTI pulse width

tEVTIPW

4.0

—

tTCYC

EVTO pulse width

tEVTOPW

1—

tMCYC

TCK cycle time

tTCYC

4 4

4 Limit the maximum frequency to approximately 16 MHz (V

DDE = 2.25–3.0 V) or 20 MHz (VDDE = 3.0–3.6 V) to meet the timing

specification for tJOV of [0.2 x tJCYC] as outlined in the IEEE-ISTO 5001-2003 specification.

—tCYC

TCK duty cycle

tTDC

TDI, TMS data setup time

tNTDIS, tNTMSS

8—

TDI, TMS data hold time

tNTDIH, tNTMSH

5—

TCK low to TDO data valid

tJOV

VDDE = 2.25–3.0 V

VDDE = 3.0–3.6 V

RDY valid to MCKO 5

5 The RDY pin timing is asynchronous to MCKO and is guaranteed by design to function correctly.

——

—

MCKO

MDO

MSEO

EVTO

Output Data Valid

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