MPC8349E PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 10
Freescale Semiconductor
41
JTAG
11 JTAG
This section describes the DC and AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface
of the MPC8349E.
11.1
JTAG DC Electrical Characteristics
Table 36
provides the DC electrical characteristics for the IEEE Std. 1149.1 (JTAG) interface of the
MPC8349E.
11.2
JTAG AC Timing Specifications
This section describes the AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface of the
MPC8349E.
Table 37
provides the JTAG AC timing specifications as defined in
Figure 26
through
Figure 29
.
Table 36. JTAG interface DC Electrical Characteristics
Characteristic
Symbol
Condition
Min
Max
Unit
Input high voltage
V
IH
OV
DD
– 0.3
OV
DD
+ 0.3
V
Input low voltage
V
IL
–0.3
0.8
V
Input current
I
IN
±5
μ
A
Output high voltage
V
OH
I
OH
= –8.0 mA
2.4
—
V
Output low voltage
V
OL
I
OL
= 8.0 mA
—
0.5
V
Output low voltage
V
OL
I
OL
= 3.2 mA
—
0.4
V
Table 37. 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
f
JTG
0
33.3
MHz
JTAG external clock cycle time
t
JTG
30
—
ns
JTAG external clock pulse width measured at 1.4 V
t
JTKHKL
15
—
ns
JTAG external clock rise and fall times
t
JTGR
, t
JTGF
0
2
ns
TRST assert time
t
TRST
25
—
ns
3
Input setup times:
Boundary-scan data
TMS, TDI
t
JTDVKH
t
JTIVKH
4
4
—
—
ns
4
Input hold times:
Boundary-scan data
TMS, TDI
t
JTDXKH
t
JTIXKH
10
10
—
—
ns
4
Valid times:
Boundary-scan data
TDO
t
JTKLDV
t
JTKLOV
2
2
11
11
ns
5