The programmer interfaces to the ARM Microcontroller via the on-chip JTAG port. The following Equinox programmers support the JTAG Programming Interface:

The table below details the pin-out connections of this header

Pin No	Pin Name	Programmer Input/Output	Description
1	VTref	I	Target System Reference Voltage This pin is used by the programmer to sense / power the programmer Line Driver circuitry
2	Vsupply	N/C	Not used by Equinox Programmers
3	nTRST	O	No connect to Equinox Programmer This signal is not used by Equinox Programmers. It is pulled high with a 47k ohm resistor on the programmer cable / connector module
4	PROG_GND	P	Ground Connection Common ground connection between programmer and Target System
5	PROG_TDI	O	JTAG TDI – Test Data Input pin Data signal from programmer to Target Device JTAG port
6	PROG_GND	P	Ground Connection Common ground connection between programmer and Target System
7	PROG_TMS	O	JTAG TMS – Test Mode Select pin Mode Select Signal from programmer to Target Device JTAG port
8	PROG_GND	P	Ground Connection Common ground connection between programmer and Target System
9	PROG_TCK	O	JTAG TCK – Test Clock Signal pin Clock signal from programmer to Target Device JTAG port
10	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System
11	RTCK	N/C	Input Return Test Clock signal from Target System This signal is not used by Equinox programmers.
12	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System.
13	PROG_TDO	I	JTAG TDO – Test Data Output pin JTAG data output from Target device JTAG port to programmer. Typically connected to TDO pin on AT91SAM7 device
14	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System.
15	PROG_RESET	O	Microcontroller RESET control signal This pin connects to the main RESET pin of the Target AT91SAM7 microcontroller or to the AT91SAM7 RESET circuit on the Target System
16	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System
17	N/C	N/C	No connect to Equinox Programmer
18	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System
19	N/C	N/C	No connect to Equinox Programmer
20	PROG_GND	P	Ground Connection Common ground connection between Programmer and Target System

Key

O - Output from programmer to Target Device

I - Input to programmer from Target Device

P - Passive eg. GROUND and power rails

N/C - Not connected

• AT91SAM7A - ARM7 FLASH Microcontroller
• AT91SAM7L (Low Power) Series - ARM7 FLASH Microcontroller
• AT91SAM7S - ARM7 FLASH Microcontroller
• AT91SAM7SE - ARM7 FLASH Microcontroller
• AT91SAM9XE - ARM9 FLASH Microcontroller

Please note:
Not all devices may be supported within a family.
Please see the Detailed Device Support List for a list of all devices which the product supports.