Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet

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SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

The DDR2 Controller is dedicated to 4-port DDR2/LPDDR support. Data transfers are performed through a 16-bit
data bus on one chip select. The DDR2 Controller operates with 1.8V Power Supply (VDDIOM0).

Four AHB Interfaces, Management of All Accesses Maximizes Memory Bandwidth and Minimizes Transaction
Latency. 

• Supports AHB Transfers:

– Word, Half Word, Byte Access.

• Supports DDR-SDRAM 2, LPDDR

• Numerous Configurations Supported

– 2K, 4K, 8K, 16K Row Address Memory Parts

– DDR2 with Four Internal Banks

– DDR2/LPDDR with 16-bit Data Path

– One Chip Select for DDR2/LPDDR Device (256 Mbytes Address Space)

• Programming Facilities

– Multibank Ping-pong Access (Up to 4 Banks Opened at Same Time = Reduces Average Latency of 

Transactions)

– Timing Parameters Specified by Software

– Automatic Refresh Operation, Refresh Rate is Programmable

– Automatic Update of DS, TCR and PASR Parameters

• Energy-saving Capabilities

– Self-refresh, Power-down and Deep Power Modes Supported

• Power-up Initialization by Software

• CAS Latency of 2, 3 Supported

• Reset function supported (DDR2)

• Auto Precharge Command Not Used

• On Die Termination not supported

• OCD mode not supported