LM3S1776 Datasheet, PDF (678/735 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Electrical Characteristics
Table 20-13. JTAG Characteristics (continued)
Parameter
No.
Parameter Parameter Name
Min
Nom
Max
Unit
J8
t_{TMS_HLD}
TMS hold time from TCK rise
J9
t_{TDI_SU}
TDI setup time to TCK rise
J10
t_{TDI_HLD}
TDI hold time from TCK rise
2-mA drive
20
-
-
ns
25
-
-
ns
25
-
-
ns
23
35
ns
J11
TCK fall to Data
t _{TDO_ZDV} ^{Valid from High-Z}
4-mA drive
8-mA drive
15
26
ns
-
14
25
ns
8-mA drive with slew rate control
18
29
ns
2-mA drive
21
35
ns
J12
t _{TDO_DV}
TCK fall to Data
Valid from Data
Valid
4-mA drive
8-mA drive
14
25
ns
-
13
24
ns
8-mA drive with slew rate control
18
28
ns
2-mA drive
9
11
ns
J13 _{TCK fall to High-Z}
t _{TDO_DVZ} ^{from Data Valid}
4-mA drive
8-mA drive
7
9
ns
-
6
8
ns
8-mA drive with slew rate control
7
9
ns
Figure 20-2. JTAG Test Clock Input Timing
J2
J3
J4
TCK
J6
J5
Figure 20-3. JTAG Test Access Port (TAP) Timing
TCK
TMS
TDI
TDO
J7
J8
J7
J8
TMS Input Valid
TMS Input Valid
J9
J10
J9
J10
TDI Input Valid
TDI Input Valid
J11
J12
J13
TDO Output Valid
TDO Output Valid
678
November 17, 2011
Texas Instruments-Production Data