JTAG
12.1
JTAG DC Electrical Characteristics
Table 43. JTAG DC Electrical Characteristics
Parameter
Symbol
1
V
IH
V
IL
I
IN
V
OH
V
OL
Min
2
–0.3
—
2.4
—
Max
OV
DD
+ 0.3
0.8
±5
—
0.4
Unit
V
V
μA
V
V
provides the DC electrical characteristics for the JTAG interface.
High-level input voltage
Low-level input voltage
Input current (V
IN1
= 0 V or V
IN
= V
DD
)
High-level output voltage (OV
DD
= min, I
OH
= –2 mA)
Low-level output voltage (OV
DD
= min, I
OL
= 2 mA)
Note:
1. Note that the symbol V
IN
, in this case, represents the OV
IN
.
12.2
JTAG AC Electrical Specifications
Table 44. JTAG AC Timing Specifications (Independent of SYSCLK)
1
Parameter
Symbol
2
f
JTG
t
JTG
t
JTKHKL
t
JTGR
& t
JTGF
t
TRST
Boundary-scan data
TMS, TDI
t
JTDVKH
t
JTIVKH
t
JTDXKH
t
JTIXKH
t
JTKLDV
t
JTKLOV
t
JTKLDX
t
JTKLOX
Min
0
30
15
0
25
4
0
20
25
4
4
30
30
Max
33.3
—
—
2
—
—
—
ns
Boundary-scan data
TMS, TDI
—
—
ns
Boundary-scan data
TDO
20
25
ns
Boundary-scan data
TDO
—
—
5
5
4
Unit
MHz
ns
ns
ns
ns
ns
4
Notes
—
—
—
6
3
provides the JTAG AC timing specifications as defined in
through
JTAG external clock frequency of operation
JTAG external clock cycle time
JTAG external clock pulse width measured at 1.4 V
JTAG external clock rise and fall times
TRST assert time
Input setup times:
Input hold times:
Valid times:
Output hold times:
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6
52
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
