Read Modify Write Module IP Core
Overview:
The Read-Modify-Write Module handles misalignedbursts when
Error Correction Coding (ECC)
is being used.An ECC value must be calculated over an entire data word.
Misaligned bursts can have partial data words at the front and back end
of the burst. To calculate the correct ECC value, the Read-Modify-Write
Module forms the correct starting and ending data words by reading the
existing data words and combining them appropriately with the new
partial data words.
The Read-Modify-Write module also provides byte to SDRAM addressing
(either 64-bit or 128-bit) translation and extended
12-bit burst length (4096 bytes) capability. Read-Modify-Write write
operations are by their nature inefficient. The Read-Modify-Write Module
implements a prefetch architecture that maximizes the SDRAM bus
utilization as efficiently
as possible.
Core Deliverables:
· Core (Netlist or Source Code)
· Comprehensive Verification Suite (Source Code)
· Complete Documentation
· Expert Technical Support & Maintenance Updates
Product Highlights:
• Performs Read-Modify-Write operation start and end of
misaligned bursts writes when using Error Correction Coding (ECC)
• Performs address translation from byte addressing to the 64-bit or
128-bit addressing of the SDRAM devices
• Prefetch architecture maximizes SDRAM bus efficiency
• Simple user interface signaling
• Pipelined design enables high speed operation
• Source code available
• Customization and Integration services available
IP Core Price:
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