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updating arm jtag readme to make the arm jtag side easier

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David Welch
2012-10-09 12:37:21 -04:00
parent 3db8815010
commit af0b784514
1 changed files with 19 additions and 8 deletions
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27
armjtag/README
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@@ -19,15 +19,26 @@ http://www.sparkfun.com/products/9140
http://www.sparkfun.com/products/9385
The signal name, gpio pins, schematic name, connector pin
and direction shown here
and direction shown here. When looking into the holes of an arm
20 pin (female) jtag connector. There should be a key or bit of plastic
almost two holes wide on one side. With that key pointed up, looking
into the holes pin one is the top left corner. The arm jtag names
on the left of this list start with pin 1 and go along that side of
the connector in order. For ground use any one of the holes on the
other side except the lower left, pin 2, that is not a ground.
ARM_VREF P1-1
ARM_TRST 22 GPIO_GEN3 P1-15 IN (22 ALT4)
ARM_TDO 5/24 GPIO_GEN5 P1-18 OUT (24 ALT4)
ARM_TCK 13/25 GPIO_GEN6 P1-22 OUT (25 ALT4)
ARM_TDI 4/26 GPIO_GCLK P1-7 IN ( 4 ALT5)
ARM_TMS 12/27 CAM_GPIO S5-11 OUT (27 ALT4)
ARM_GND P1-25
See this page as an example
http://www.amontec.com/jtag_pinout.shtml
1 ARM_VREF P1-1
2 ARM_TRST 22 GPIO_GEN3 P1-15 IN (22 ALT4)
3 ARM_TDI 4/26 GPIO_GCLK P1-7 IN ( 4 ALT5)
4 ARM_TMS 12/27 CAM_GPIO S5-11 OUT (27 ALT4)
5 ARM_TCK 13/25 GPIO_GEN6 P1-22 OUT (25 ALT4)
7 no connect
9 ARM_TDO 5/24 GPIO_GEN5 P1-18 OUT (24 ALT4)
4-20 ARM_GND P1-25
In parenthesis is the gpio pin used and the alternate function setting
needed in the GPIO to connect it to the edge of the BCM chip.