Altera 100G Interlaken MegaCore Function - Manual (Page 28)

Enable M20K ECC Support
The Enable M20K ECC support parameter specifies whether your 100G Interlaken MegaCore function
variation supports the ECC feature in the Stratix V and Arria 10 M20K memory blocks that are
configured as part of the IP core. This parameter is relevant only for IP core variations that target a Stratix
V device or an Arria 10 device.
You can turn this parameter on to enable single-error correct, double-adjacent-error correct, and triple-
adjacent-error detect ECC functionality in the M20K memory blocks configured in your IP core. You can
turn this parameter off to decrease IP core latency and save resources on the device. If you turn on this
feature, you enhance data reliability but increase latency and resource utilization. Without the ECC
feature, a single M20K memory block can support a data path width of 40 bits. With the ECC feature,
eight of those bits are dedicated to the ECC, and an M20K memory block can support a maximum data
path width of 32 bits. Therefore, to support the same data bus width, the Quartus II Fitter must configure
additional M20K blocks. The ECC check adds latency to the path through the memory block, and
increases the amount of device memory used by your IP core.
A checkmark in the check box to the left of the parameter turns this parameter on, specifying that the IP
core supports this feature. A check box with no checkmark indicates that the option is turned off, and the
IP core does not support this feature.
By default, the Enable M20K ECC support parameter is turned off.
Related Information
• Embedded Memory Blocks in Stratix V Devices
Information about the built-in ECC feature in Stratix V devices.
• Embedded Memory Blocks in Arria 10 Devices
Information about the built-in ECC feature in Arria 10 devices.
Include Diagnostic Features
The Include diagnostic features parameter enables the following diagnostic modes for initial board
bring-up and for system testing in the factory and in the field:
• CRC error counters
• CRC32 error injection on the Interlaken link
• PRBS generation and checking
• Factory test features
You can turn this parameter on to enable this IP core functionality, or turn it off to save resources on the
device. If you turn this parameter on, you control the diagnostic modes by accessing 100G Interlaken IP
core registers.
A checkmark in the check box to the left of the parameter turns this parameter on, specifying that the IP
core has this additional functionality. A check box with no checkmark indicates that the option is turned
off, and the IP core does not have this functionality.
By default, the Include diagnostic features parameter is turned off.
Related Information
• PRBS Generation and Validation on page 8-2
• CRC32 Error Injection on page 8-7
3-4 Enable M20K ECC Support
UG-01128
2015.05.04
Altera Corporation 100G Interlaken IP Core Parameter Settings
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