AT91SAM9261-EK Datasheet, PDF (17/26 Pages) ATMEL Corporation – The AT91SAM9261-EK evaluation kit is an effective platform for evaluating chip performance and developing code for applications based on the AT91SAM92

Section 4
Configuration Straps
4.1
Configuration
Table 4-1 gives details on configuration straps on the AT91SAM9261-EK evaluation
Straps
board and their default settings.
Table 4-1. Configuration Jumpers and Straps
Designation
J2
Default
Setting
Closed
Feature
3.3V Jumper ⁽¹⁾
This jumper footprint is provided for 3.3V power consumption
measurement use. By default, it is closed. To use this feature,
the user has to open the strap by cutting it before soldering a
jumper.
J3
Closed
Forces power on. To use the software shutdown control, J3
must be opened.
J4
Opened Enables Boot on the internal ROM
Closed
Enables Boot on the NCS0
J8
Closed
VDDPLL Jumper ⁽¹⁾
J9
2-3
VDDBU Jumper select ⁽¹⁾
1-2 : Lithium 3V Battery
2-3 : 1.2V from VDDCORE
J12
Closed
VDDCORE Jumper ⁽¹⁾
J21
1-2
NPCS0 select
1-2 : AT45DB321C (MN7)
2-3 : Dataflash card interface (J22).
Warning: In this case NPCS03 must be configured as
input.
S2
Opened Disables the ICE NTRST input
S3
Closed
Enables the ICE RTCK return. S6 must be opened
S4
Closed
Enables the ICE NRST input
S5
Opened Selects ICE mode or JTAG mode (Closed)
S6
Opened Disables TCK <-> RTCK local loop. If S6 is closed, S3 must be
opened.
AT91SAM9261-EK Evaluation Board User Guide
4-1
6198A–ATARM–15-Nov-05