MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
58
12
JTAG
This section describes the DC and AC electrical specifications for the IEEE 1149.1 (JTAG) interface of the MPC8378E.
12.1
JTAG DC Electrical Characteristics
The following table 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. The following table
Table 49. JTAG interface DC Electrical Characteristics
Parameter
Symbol
Condition
Min
Max
Unit
Input high voltage
VIH
—2.5
OVDD +0.3
V
Input low voltage
VIL
—
–0.3
0.8
V
Input current
IIN
——
±30
A
Output high voltage
VOH
IOH = –8.0 mA
2.4
—
V
Output low voltage
VOL
IOL = 8.0 mA
—
0.5
V
Output low voltage
VOL
IOL = 3.2 mA
—
0.4
V
Table 50. JTAG AC Timing Specifications (Independent of CLKIN) 1 Parameter
Min
Max
Unit
Note
JTAG external clock frequency of operation
fJTG
033.3
MHz
—
JTAG external clock cycle time
t JTG
30
—
ns
—
JTAG external clock pulse width measured at 1.4 V
tJTKHKL
15
—
ns
—
JTAG external clock rise and fall times
tJTGR & tJTGF
02
ns
—
TRST assert time
tTRST
25
—
ns
Input setup times:
Boundary-scan data
TMS, TDI
tJTDVKH
tJTIVKH
4
—
ns
Input hold times:
Boundary-scan data
TMS, TDI
tJTDXKH
tJTIXKH
10
—
ns