Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
179
32072H–AVR32–10/2012
AT32UC3A3
15.3
Block Diagram
Figure 15-1. SMC Block Diagram (AD_MSB=23)
15.4
I/O Lines Description
15.5
Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
below.
SMC
Chip Select
HMatrix
Power
Manager
CLK_SMC
SMC
I/O
Controller
NCS[5:0]
NRD
NWE0
ADDR[0]
NWE1
ADDR[1]
ADDR[AD_MSB:2]
DATA[15:0]
NWAIT
User Interface
Peripheral Bus
NCS[5:0]
NRD
NWR0/NWE
A0/NBS0
NWR1/NBS1
A1/NWR2/NBS2
A[AD_MSB:2]
D[15:0]
NWAIT
EBI
Mux Logic
Table 15-1.
I/O Lines Description
Pin Name
Pin Description
Type
Active Level
NCS[5:0]
Chip Select Lines
Output
Low
NRD
Read Signal
Output
Low
NWR0/NWE
Write 0/Write Enable Signal
Output
Low
A0/NBS0
Address Bit 0/Byte 0 Select Signal
Output
Low
NWR1/NBS1
Write 1/Byte 1 Select Signal
Output
Low
A[23:2]
Address Bus
Output
D[15:0] Data
Bus
Input/Output
NWAIT
External Wait Signal
Input
Low