Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
67
42023ES–SAM–07/2013
ATSAM4L8/L4/L2
8.7.3
Block Diagram
Figure 8-3.
Enhanced Debug Port Block Diagram
8.7.4
I/O Lines Description
TCK
RESET_N
TDO
TDI
TMS
boundary_scan
JTAG-FILTER
EDP Core reset request
ENHANCED DEBUG PORT
DAP Bus
SW-DP
SWJ-DP
JTAG-DP
BSCAN-TAP
traceswo
swclk
swdio
tdo
tck
tms
tdi
tdo
tck
tms
tdi
tck
reset_n
test_tap_sel
Table 8-1.
I/O Lines Description
Name
JTAG Debug Port
SWD Debug Port
Type
Description
Type
Description
TCK/SWCLK
I
Debug Clock
I
Serial Wire Clock
TDI
I
Debug Data in
-
NA
TDO/TRACESWO
O
Debug Data Out
O
Trace asynchronous Data Out
TMS/SWDIO
I
Debug Mode Select
I/O
Serial Wire Input/Output
RESET_N
I
Reset
I
Reset