Icebear jtag

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Contents

[edit] About

The Icebear JTAG is a usb jtag adapter manufactured by Section5. It is based on a FTDI 2232 chip, which is very popular among USB JTAG adaptors.

Icebear plus.jpg

[edit] Lsusb

# lsusb
Bus 003 Device 020: ID 0403:c140 ..

[edit] Urjtag

In urjtag you can load the jtag cable driver:

jtag> cable FT2232 vid=0x0403 pid=0xc140

[edit] OpenOCD

OpenOCD has a config script ready

#cd /usr/share/openocd/scripts
#cat interface/icebear.cfg
interface ft2232
# ft2232_device_desc ""
ft2232_layout icebear
ft2232_vid_pid 0x0403 0xc140

[edit] Pinout

VCC 2 1 GND
GND? 4 3 missing
TMS 6 5 GPIO1
TCK 8 7 GPIO0
TRST 10 9 RX (UART)
TDI 12 11 TX (UART)
TDO 14 13 GND

[edit] Manual