ATEVK1104 Atmel, ATEVK1104 Datasheet - Page 425

• Manufacturer Part Number: ATEVK1104
• Description: KIT DEV/EVAL FOR AVR32 AT32UC3A
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1104

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A3
• Data Bus Width: 32 bit
• Interface Type: USB, SPI, USART
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A3256
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.8.1
Register Name:
Access Type:
Reset Value:
•
This field defines the command issued by the SDRAM Controller when the SDRAM device is accessed.
Table 28-9.
32058J–AVR32–04/11
MODE: SDRAMC Command Mode
0
0
0
0
1
1
1
31
23
15
MODE
–
–
–
7
–
0
0
1
1
0
0
1
SDRAMC Mode Register
0
1
0
1
0
1
0
Description
Normal mode. Any access to the SDRAM is decoded normally.
The SDRAM Controller issues a NOP command when the SDRAM device is accessed regardless of the cycle.
The SDRAM Controller issues an “All Banks Precharge” command when the SDRAM device is accessed
regardless of the cycle.
The SDRAM Controller issues a “Load Mode Register” command when the SDRAM device is accessed
regardless of the cycle. The command will load the CAS latency from the Configuration Register and every other
value set to 0 into the Mode Register.
The SDRAM Controller issues an “Auto-Refresh” Command when the SDRAM device is accessed regardless of
the cycle. Previously, an “All Banks Precharge” command must be issued.
The SDRAM Controller issues an extended load mode register command when the SDRAM device is accessed
regardless of the cycle. The command will load the PASR, DS and TCR from the Low Power Register and every
other value set to 0 into the Extended Mode Register.
Deep power-down mode. Enters deep power-down mode.
30
22
14
–
–
–
6
–
29
21
13
–
–
–
5
–
MR
Read/Write
0x00000000
28
20
12
–
–
–
4
–
27
19
11
–
–
–
3
–
26
18
10
–
–
–
2
MODE
25
17
–
–
9
–
1
AT32UC3A
24
16
–
–
8
–
0
425