HC4GX15 Datasheet, PDF (63/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 6: HardCopy IV Device I/O Features
6–13
OCT Calibration Block Location
HardCopy IV devices support OCT in all I/O banks by selecting one of the OCT I/O
standards. Unlike Stratix IV devices, which support up to 10 calibration blocks,
HardCopy IV devices support up to eight OCT calibration blocks.
f For more information on particular features, refer to the I/O Features in Stratix IV
Devices chapter in volume 1 of the Stratix IV Device Handbook.
OCT Calibration Block Location
Figure 6–3 shows the location of OCT calibration blocks in HardCopy IV devices.
Figure 6–3. OCT Calibration Block (CB) Location in HardCopy IV Devices (Note 1)
CB 0 Bank 1A
Bank 1C
Bank 2C
CB 1 Bank 2A
Bank 6A CB 6
Bank 6C
Bank 5C
Bank 5A CB 5
I/O bank with OCT
calibration block
I/O bank without OCT
calibration block
Note to Figure 6–3:
(1) Figure 6–3 is a top view of the silicon die that corresponds to a reverse view for flipchip packages. It is a graphical representation only.
You can calibrate the I/O banks with any OCT calibration block with the same V_CCIO.
Also, I/Os are allowed to transmit data during OCT calibration.
f For more information about the OCT calibration modes of operation and their
implementation, refer to the I/O Features in Stratix IV Devices chapter in volume 1 of
the Stratix IV Device Handbook.
Design Considerations
While HardCopy IV devices feature various I/O capabilities for high-performance
and high-speed system designs, there are several other considerations that require
attention to ensure the success of those designs. These design practices are consistent
with the design practices for Stratix IV devices.
© January 2010 Altera Corporation
HardCopy IV Device Handbook, Volume 1