Difference between revisions of "How many connections are required for JTAG"
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(Created page with "The JTAG interface standard requires the following connections: TDI (Test Data In) TDO (Test Data Out) TCK (Test Clock) TMS (Test Mode Select) However, when designing your...") |
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Revision as of 14:47, 6 January 2013
The JTAG interface standard requires the following connections:
TDI (Test Data In)
TDO (Test Data Out)
TCK (Test Clock)
TMS (Test Mode Select)
However, when designing your hobby project with a JTAG interface, allocate at least 8 pins on a header (dedicated header is best), for the following signals:
TDI
TDO
TCK
TMS
TRST (Test Reset)
VDD
GND
DONE
Plus any chip-specific or platform-specific configuration pins. For example, most devices and programmers use the DONE signal to specify that the programming succeeded.
