MPC8378E datasheet(59/127 Pages) FREESCALE

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MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

JTAG

12.1

JTAG DC Electrical Characteristics

Table 49 provides the DC electrical characteristics for the IEEE 1149.1 (JTAG) interface of the

MPC8378E.

12.2

JTAG AC Timing Specifications

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

Table 50 provides the JTAG AC timing specifications as defined in Figure 37 through Figure 40.

Table 49. JTAG interface DC Electrical Characteristics

Parameter

Symbol

Condition

Min

Max

Unit

Input high voltage

VIH

—2.5

OVDD +0.3

Input low voltage

VIL

—

–0.3

0.8

Input current

IIN

——

±30

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 50. JTAG AC Timing Specifications (Independent of CLKIN) 1

Parameter

Symbol2

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

—

Output hold times:

Boundary-scan data

TDO

tJTKLDX

tJTKLOX

—

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