AT91SAM9M10-G45-EK Atmel, AT91SAM9M10-G45-EK Datasheet - Page 254

• Manufacturer Part Number: AT91SAM9M10-G45-EK
• Description: KIT EVAL FOR AT91SAMG45/9M10
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9M10-G45-EK

• Contents: Board, Cables, Power Supply
• Processor To Be Evaluated: AT91SAM9M10
• Processor Series: AT91SAM9
• Data Bus Width: 32 bit
• Interface Type: RS-232, Ethernet, USB, JTAG
• Operating Supply Voltage: 5 V
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Kit Contents: Board
• Features: Two High Speed USB Hosts, LCD TFT Display
• Svhc: No SVHC (15-Dec-2010)
• Mcu Supported Families: AT91SAM9M10,
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM9M10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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AT91SAM9M10
Write Protected Registers
To prevent any single software error that may corrupt DDRSDRC behavior, the registers listed
below can be write-protected by setting the WPEN bit in the DDRSDRC Write Protect Mode
Register (DDRSDRC_WPMR).
If a write access in a write-protected register is detected, then the WPVS flag in the DDRSDRC
Write Protect Status Register (DDRSDRC_WPSR) is set and the field WPVSRC indicates in
which register the write access has been attempted.
The WPVS flag is automatically reset after reading the DDRSDRC Write Protect Status Register
(DDRSDRC_WPSR).
Following is a list of the write protected registers:
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“DDRSDRC Mode Register” on page 260
“DDRSDRC Refresh Timer Register” on page 261
“DDRSDRC Configuration Register” on page 262
“DDRSDRC Timing 0 Parameter Register” on page 265
“DDRSDRC Timing 1 Parameter Register” on page 267
“DDRSDRC Timing 2 Parameter Register” on page 268
“DDRSDRC Memory Device Register” on page 271
“DDRSDRC High Speed Register” on page 273
6355B–ATARM–21-Jun-10