AT91EB42 Atmel, AT91EB42 Datasheet - Page 20

• Manufacturer Part Number: AT91EB42
• Description: KIT EVAL FOR ARM AT91M42800A
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91EB42

• Contents: Evaluation Board, Cable, Power Jack, CD-ROM
• For Use With/related Products: AT91M42800A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1708C–ATARM–12-May-05
Appendix A – Configuration Straps
5.2
5-2
Configuration
Straps (CB1 - 23,
JP1 - 8)
Table 5-1. Functional Pin Assignment (Continued)
By adding the I/O and EBI expansion connectors, users can connect their own peripher-
als to the evaluation board. These peripherals may require more I/O lines than available
while the board is in its default state. Extra I/O lines can be made available by disabling
some of the on-board peripherals or features. This is done using the configuration straps
detailed below. Some of these straps present a default wire (notified by the default men-
tion) that must be cut before soldering the strap.
Note:
Note:
Pin Designation
PB17/TIOB3
PA13/MOSIA
PA12/MISOA
PA11/SPCKA
PA14/NPCSA0/NSSA
PA15/NPCSA1
PA16/NPCSA2
PA3/IRQ3
CB1
Closed
Open
CB3
Closed
Open
(1)
(1)
1. Hardwired default position: To cancel this default configuration, the user should cut
1. Hardwired default position: To cancel this default configuration, the user should cut
the wire on the board.
the wire on the board.
On-board PB5/A23/CS4 Signal
AT91 PB5/A23/CS4 signal is connected to the EBI expansion connector
(P1-B21).
AT91 PB5/A23/CS4 signal is not connected to the EBI expansion connector
(P1-B21).
This authorizes users to connect the EBI expansion connector of this board
to the MPI expansion connector of an AT91EB63 Evaluation Board without
conflicting problems.
On-board IRQ3 Signal
AT91 IRQ3 signal is connected to the external ADC (U20 pin 4).
AT91 IRQ3 signal is not connected to the external ADC (U20 pin 4). This
authorizes the user to use this signal for other applications via the I/O
Expansion connector (P2 - A8).
Function Used on the AT91EB42
General I/O input/output line to generate SDA signal dedicated for a
two wire bus access
To generate SPI bus Access to the DataFlash, EEPROM and ADC
devices
To generate SPI bus Access to the DataFlash, EEPROM and ADC
devices
To generate SPI bus Access to the DataFlash, EEPROM and ADC
devices
Chip Select signal for the SPI device: DataFlash
Chip Select signal for the SPI device: EEPROM
Chip Select signal for the SPI device: ADC
Interrupt line from the ADC device
AT91EB42 Evaluation Board User Guide