16
Cyclone for ARM devices User Manual
Cyclone for ARM
®
devices
3.10
20-Pin Keyed Mini Connector
The Cyclone provides a keyed 20-pin 0.050-inch pitch double row connector
for ARM targets. The 20-pin keyed mini connector pin definitions for JTAG
mode are as follows:
20-Pin Keyed Mini Connector JTAG Mode Pin Assignments
PIN 1 -
TVCC
TMS -
PIN 2
PIN 3 -
GND
TCK -
PIN 4
PIN 5 -
GND
TDO -
PIN 6
PIN 7 -
NC
TDI -
PIN 8
PIN 9 -
NC
RESET -
PIN 10
PIN 11 -
NC
NC -
PIN 12
PIN 13 -
NC
NC -
PIN 14
PIN 15 -
GND
NC -
PIN 16
PIN 17 -
GND
NC -
PIN 18
PIN 19 -
GND
NC -
PIN 20
The Cyclone for ARM also supports SWD Mode. This replaces the JTAG
connection with a clock and single bi-directional data pin.
20-Pin Keyed Mini Connector SWD Mode Pin Assignments
PIN 1 -
TVCC
TMS/SWDIO -
PIN 2
PIN 3 -
GND
TCK/SWCLK -
PIN 4
PIN 5 -
GND
NC -
PIN 6
PIN 7 -
NC
NC -
PIN 8
PIN 9 -
NC
RESET -
PIN 10
PIN 11 -
NC
NC -
PIN 12
PIN 13 -
NC
NC -
PIN 14
PIN 15 -
GND
NC -
PIN 16
PIN 17 -
GND
NC -
PIN 18
PIN 19 -
GND
NC -
PIN 20
SWD Mode is selected from the “Communication Mode” drop-down box in the
Cyclone Image Creation Utility: