User manual

Evaluation Kit Hardware
4-12 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
4.4.2 Jumpers
The SAM3N-EK board jumpers are used for many purposes such as internal Flash Memory reinitializa-
tion, power current measurement and other configurations.
4.4.3 Test Points
Some test points have been placed on the SAM3N-EK board for the verification of important signals.
PC24 TIOB3 ZB_IRQ0 ZigBee
PC25 TCLK3 ZB_IRQ1 ZigBee
PC26 TIOA4 ZB_SLPTR ZigBee
PC27 TIOB4
PC28 TCLK4
PC29 TIOA5 AD13
PC30 TIOB5 AD14
PC31 TCLK5 AD15
Table 4-3. PIO Port C Assignment (Continued)
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
Table 4-4. Jumpers
Designation Label
Default
Setting Feature
JP1 JTAGSEL OPEN
Close it to reinitialize the Flash content and some
of its NVM bits.
This jumper must be closed for more than 220 ms
at power-up to perform the reinitialization.
JP2 ADVREF CLOSE
Analog reference voltage selection, access for
external reference voltage
JP3 PB12 OPEN
ERASE, Close to reinitialize the Flash contents and
some of its NVM bits
JP4 VDDIO CLOSE Access for current measurement on VDDIO
JP5 VDDIN CLOSE Access for current measurement on VDDIN
JP6 VDDPLL CLOSE Access for current measurement on VDDPLL
JP7 VDDCORE CLOSE Access for current measurement on VDDCORE
JP8 +3V3 1-2
DC voltage selection between 3.3V and 5V on PIO
expansion ports, default for 3.3V
JP9 +3V3 1-2
DC voltage selection between 3.3V and 5V on PIO
expansion ports, default for 3.3V
Table 4-5. Test Points
Designation Part Description
TP1 Ring Hook +5V
TP2 Ring Hook +3V3
TP3 Ring Hook GND
TP4 Ring Hook GND