Colibri Evaluation Board - Toradex
Colibri Evaluation Board - Toradex
Colibri Evaluation Board - Toradex
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<strong>Colibri</strong> <strong>Evaluation</strong> <strong>Board</strong> Datasheet3.8. JTAGThe <strong>Colibri</strong> <strong>Evaluation</strong> <strong>Board</strong> provides a JTAG interface to the JTAG port available on <strong>Colibri</strong> modules.Connector X19 is used to connect to the <strong>Colibri</strong> module JTAG connector with a flexible flat cable, andX13 provides an interface to an external JTAG device via a standard 2.54mm shrouded and keyedheader.In addition, the <strong>Colibri</strong> evaluation <strong>Board</strong> features a spring loaded Pogo-pin connector X28 which ispositioned directly underneath the installed <strong>Colibri</strong> module, allowing direct connection with the <strong>Colibri</strong>module JTAG test points, removing the need for the JTAG FFC connector.Different <strong>Colibri</strong> modules support JTAG interfaces with different voltage levels, and therefore JumperJP29 must be used to set the correct JTAG voltage reference:JP29 Active1 - 2 VREF_JTAG = +1.8V2 - 3 VREF_JTAG = +3.3VPlease note that, if the voltage is wrong, the module will be damaged!3.8.1 JTAG to Host (X13)Type: 2x10Pin Header Male, 2.54mmPin Nr. Signal Name IO Type Voltage Pullup/Pulldown1 VREF_JTAG PWR2 VREF_JTAG PWR3 JTAG_TRST# I +3V34 GND PWR5 JTAG_TDI I +3V36 GND PWR7 JTAG_TMS I +3V38 GND PWR9 JTAG_TCK I +3V310 GND PWR11 NC Not connected12 GND PWR13 JTAG_TDO_R I +3V314 GND PWR15 JTAG_SYSRESET# I +3V316 GND PWR17 NC Not connected18 GND PWR19 NC Not connected20 GND PWR<strong>Toradex</strong> AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com Page | 30
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