1500457 Datasheet, PDF (42/87 Pages) Freescale Semiconductor, Inc – Integrated Host Processor Hardware Specifications

JTAG
Table 40. JTAG Interface DC Electrical Characteristics (continued)
Parameter
Output low voltage
Output low voltage
Symbol
Condition
Min
V_OL
I_OL = 8.0 mA
—
V_OL
I_OL = 3.2 mA
—
Max
Unit
0.5
V
0.4
V
11.2 JTAG AC Timing Specifications
This section describes the AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface of the
MPC8349EA. Table 41 provides the JTAG AC timing specifications as defined in Figure 28 through
Figure 31.
Table 41. JTAG AC Timing Specifications (Independent of CLKIN)¹
At recommended operating conditions (see Table 2).
Parameter
Symbol²
Min
Max
Unit
Notes
JTAG external clock frequency of operation
f_JTG
0
JTAG external clock cycle time
t _JTG
30
JTAG external clock pulse width measured at 1.4 V
t_JTKHKL
15
JTAG external clock rise and fall times
t_JTGR, t_JTGF
0
TRST assert time
t_TRST
25
Input setup times:
Boundary-scan data
t_JTDVKH
4
TMS, TDI
t_JTIVKH
4
Input hold times:
Boundary-scan data
t_JTDXKH
10
TMS, TDI
t_JTIXKH
10
Valid times:
Boundary-scan data
t_JTKLDV
2
TDO
t_JTKLOV
2
Output hold times:
Boundary-scan data
t_JTKLDX
2
TDO
t_JTKLOX
2
33.3
MHz
—
—
ns
—
—
ns
—
2
ns
—
—
ns
3
ns
—
4
—
ns
—
4
—
ns
11
5
11
ns
—
5
—
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
42
Freescale Semiconductor