Atmel AT91SAM9261-EK, Руководство пользователя

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AT91SAM9261-EK Evaluation Board User Guide 4-1
6198C–ATARM–15-Dec-06
Section 4
Configuration Straps
4.1 Configuration
Straps
Table 4-1 gives details on configuration straps on the AT91SAM9261-EK evaluation
board and their default settings.
Table 4-1. Configuration Jumpers and Straps
Designation
Default
Setting
Feature
J2 Closed 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: DataFlash device (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 (See Section 6, Errata )
S6 Opened Disables TCK <-> RTCK local loop. If S6 is closed, S3 must be
opened.