Specifications

I/O banks that do not have calibration blocks share the calibration blocks in the I/O banks that have
calibration blocks.
All I/O banks support OCT calibration with different V
CCIO
voltage standards, up to the number of available
OCT calibration blocks.
You can configure the I/O banks to receive calibration codes from any OCT calibration block with the same
V
CCIO
. If a group of I/O banks has the same V
CCIO
voltage, you can use one OCT calibration block to calibrate
the group of I/O banks placed around the periphery.
Related Information
• OCT Calibration Block Sharing Example on page 5-42
• Dynamic Calibrated On-Chip Termination (ALTOCT) Megafunction User Guide
Provides more information about the OCT calibration block.
OCT Calibration Block Sharing Example
Figure 5-18: Example of Calibrating Multiple I/O Banks with One Shared OCT Calibration Block—Preliminary
As an example, this figure shows a group of I/O banks that has the same V
CCIO
voltage. The figure does not
show transceiver calibration blocks.
CB3
Bank 8A
Transceiver Block
Bank 7A
Bank 6A
Bank 5BBank 5A
Bank 4A
Bank 3BBank 3A
I/O bank with different V
CCIO
I/O bank with the same V
CCIO
Because banks 5A and 7A have the same V
CCIO
as bank 3A, you can calibrate all three I/O banks (3A, 5A,
and 7A) with the OCT calibration block (CB3) located in bank 3A.
To enable this calibration, serially shift out the R
S
OCT calibration codes from the OCT calibration block
in bank 3A to the I/O banks around the periphery.
Related Information
• Sharing an OCT Calibration Block on Multiple I/O Banks on page 5-41
I/O Features in Cyclone V Devices
Altera Corporation
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OCT Calibration Block Sharing Example
5-42
2013.06.21