Atmel AT91SAM9XE-EK 사용자 설명서

6311A–ATARM–04-Feb-08

These jumpers are provided for power consumption measurement. By default, they are 
closed. To use this feature, the user has to open the strap and insert an ammeter.

Table 4-1.  Jumpers Configuration

J2

Closed

3.3V Jumper

J3

Closed

Forces power on.

To use the software shutdown control, J3 must be opened. 3V 
battery backup must be present.

J6

Closed

VDDPLL Jumper

J7

2-3

Erase/Normal operation mode

1-2: Erase entire flash chip

2-3 or open: Normal operating mode

J9

2 - 3

Slow Clock OSCSEL

 

1-2: Internal RC Oscillator

 

2-3: External Crystal Oscillator

J10

Closed

VDDBU Jumper

J12

Closed

VDDCORE Jumper

J15

Closed

Enables Ethernet Auto MDIX control

J32

Closed

Enables the use of the embedded NANDFLASH device (MN6xx)

J33

Closed

Enables the use of the embedded DATAFLASH device (MN9)