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Configuration Straps
Table 4-1. Configuration Jumpers and Straps (Continued)
Default
Designation
S1
S2
S3
S4
S5
Setting
Opened
Closed
Closed
Closed
Closed
Feature
Solder it, enables permanent pull up on USB DP. S3 must
be open.
The System Reset signal (NRST) is connected to the
ICE/JTAG socket (J8, pin 15).
Enables the use of the USB DP PUP (PB1)
Enables the use of the USB CNX detection (PB0)
Digital Analog GND planes separation. Do not cut it
S6
Closed
Opened
Opened
Disables shutdown control and forces Power on.
Do not close at same time as S7.
Enables shutdown control
Disables shut down control
4-2
6165C–ATARM–26-Jun-06
S7
S8 - S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
Closed
Closed
Closed
Closed
Opened
Closed
Closed
Closed
Closed
Closed
Opened
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Opened
Closed
Closed
Closed
Closed
Enables shutdown control
Do not close at same time as S6.
Enables the use of 18.432 MHz crystal. Must be open if
external clock used.
Enables the Power LED control
Enables the use of the NPCS13
Disable Serial DataFlash write protect
Enables the use of the TXD CAN0 transceiver (PA27)
Enables the use of the RXD CAN0 transceiver (PA26)
Enables control of the Standby/Normal mode for CAN0
and CAN1 transceivers (PA23)
Enables the use of the TXD CAN1 transceiver (PA29)
Enables the use of the RXD CAN1 transceiver (PA28)
Enables control of the Standby/Normal mode for CAN0
and CAN1 transceivers (PA23).
If S18 is closed, S15 must be open.
Enables the use of PWM0 Analog Output (PA18)
Enables the use of AD02 Analog Input (PB16)
Enables the use of AD03 Analog Input (PB17)
Enables the use of the TXD LIN transceiver (PA3)
Enables the use of the RXD LIN transceiver (PA2)
Enables the control of the EN LIN transceiver (PA5)
Enables the control of the INH LIN transceiver (PA6)
Do not use
Enables the use of the User LED DS4 (PA25)
Enables the use of the User LED DS3 (PA24)
Enables the use of the User LED DS2 (PA21)
Enables the use of the User LED DS1 (PA20)
AT91SAM7A3-EK Evaluation Board User Guide
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