Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Fiche De Données
Codes de produits
AT32UC3A3-XPLD
166
32072H–AVR32–10/2012
AT32UC3A3
14.5
Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
below.
14.5.1
I/O Lines
The pins used for interfacing the compliant external devices may be multiplexed with I/O Con-
troller lines. The user must first configure the I/O Controller to assign the EBI pins to their
peripheral functions.
troller lines. The user must first configure the I/O Controller to assign the EBI pins to their
peripheral functions.
14.5.2
Power Management
To prevent bus errors EBI operation must be terminated before entering sleep mode.
14.5.3
Clocks
A number of clocks can be selected as source for the EBI. The selected clock must be enabled
by the Power Manager.
by the Power Manager.
The following clock sources are available:
• CLK_EBI
• CLK_SDRAMC
• CLK_SMC
ADDR[17]
BA1
ADDR[17]
SDRAMC Bank 1
SMCAddress Bus Line 17
Output
SMC/CompactFlash shared lines
NRD
NRD
CFNOE
SMC Read Signal
CompactFlash CFNOE
Output
Low
NWE0
NWE0-NWE
CFNWE
SMC Write Enable10 or Write enable
CompactFlash CFNWE
Output
Low
NCS[4]
NCS[4]
CFCS[0]
SMC Chip Select Line 4
CompactFlash Chip Select Line 0
Output
Low
NCS[5]
NCS[5]
CFCS[1]
SMC Chip Select Line 5
CompactFlash Chip Select Line 1
Output
Low
SMC/NAND Flash/SmartMedia shared lines
NCS[2]
NCS[2]
NANDCS[0]
SMC Chip Select Line 2
NANDFlash/SmartMedia Chip Select Line
0
0
Output
Low
NCS[3]
NCS[3]
NANDCS[1]
SMC Chip Select Line 3
NANDFlash/SmartMedia Chip Select Line
1
1
Output
Low
SDRAMC/SMC/CompactFlash shared lines
NWE1
DQM1/
NWE1-NBS1/
CFNIORD
SDRAMC DQM1
SMC Write Enable1 or Byte Select 1
CompactFlash CFNIORD
Output
Pin Name
Alternate
Name
Pin Description
Type
Active
Level