MPC8347A datasheet(46/108 Pages) FREESCALE

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MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 3

Freescale Semiconductor

JTAG

11 JTAG

This section describes the DC and AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface

of the MPC8347EA

11.1

JTAG DC Electrical Characteristics

Table 39 provides the DC electrical characteristics for the IEEE Std. 1149.1 (JTAG) interface of the

MPC8347EA.

11.2

JTAG AC Timing Specifications

This section describes the AC electrical specifications for the IEEE Std. 1149.1™ (JTAG) interface of the

MPC8347EA. Table 40 provides the JTAG AC timing specifications as defined in Figure 26 through

Figure 29.

Table 39. JTAG interface DC Electrical Characteristics

Characteristic

Symbol

Condition

Min

Max

Unit

Input high voltage

VIH

OVDD – 0.3 OVDD + 0.3

Input low voltage

VIL

–0.3

0.8

Input current

IIN

±5

μA

Output high voltage

VOH

IOH = –8.0 mA

2.4

—

Output low voltage

VOL

IOL = 8.0 mA

—

0.5

Output low voltage

VOL

IOL = 3.2 mA

—

0.4

Table 40. JTAG AC Timing Specifications (Independent of CLKIN) 1

At recommended operating conditions (see Table 2).

Parameter

Symbol 2

Min

Max

Unit

Notes

JTAG external clock frequency of operation

fJTG

033.3

MHz

JTAG external clock cycle time

t JTG

—

JTAG external clock pulse width measured at 1.4 V

tJTKHKL

—

JTAG external clock rise and fall times

tJTGR & tJTGF

TRST assert time

tTRST

—

Input setup times:

Boundary-scan data

TMS, TDI

tJTDVKH

tJTIVKH

—

Input hold times:

Boundary-scan data

TMS, TDI

tJTDXKH

tJTIXKH

—

Valid times:

Boundary-scan data

TDO

tJTKLDV

tJTKLOV

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