HC4GX15 Datasheet, PDF (460/668 Pages) Altera Corporation – HardCopy IV Device Handbook

2–2
Chapter 2: HardCopy IV GX Dynamic Reconfiguration
Conventions Used in this Chapter
■ Alternate transmitter PLL—This term refers to one of the two CMU PLLs of a
transceiver block. It refers to the CMU PLL configured in the Reconfig Alt PLL
screen of the ALTGX MegaWizard Plug-In Manager.
■ Channel and TX PLL select/reconfig—This term refers to the three dynamic
reconfiguration modes: CMU PLL reconfiguration, Channel and CMU PLL
reconfiguration, and Channel Reconfiguration with TX PLL select.
■ CMU channel—This term refers to the CMU PLLs of a transceiver block
configured as PMA-only channels.
■ Dynamic Reconfiguration Controller—This term represents the dynamic
reconfiguration controller. This term is used when a concept related to the
controller is explained.
■ Logical Channel Addressing—This term is used whenever the concept of logical
channel addressing is explained. This term does not refer to the
logical_channel_address port or the Use 'logical_channel_address' port for
Analog controls reconfiguration option available in the ALTGX_RECONFIG
MegaWizard Plug-In Manager.
■ Logical reference index—This term refers to the logical identification value of
0 or 1 assigned to the main transmitter PLL and the alternate transmitter PLL. You
set this value in the Reconfig Clks 1 and Reconfig Alt PLL screens of the ALTGX
MegaWizard Plug-In Manager.
■ logical tx pll—This term refers to the logical reference index value of the
transmitter PLLs stored in the .mif.
■ Main transmitter PLL—This term refers to one of the two CMU PLLs of a
transceiver block. It refers to the CMU PLL configured in the General screen of the
ALTGX MegaWizard Plug-In Manager.
■ Memory Initialization File, also known as .mif—When you enable .mif generation
in your design, a file with the extension .mif gets generated. This file contains
information about the various ALTGX MegaWizard Plug-In Manager options you
can set. Each word in the .mif is 16 bits wide. The dynamic reconfiguration
controller writes information from the .mif into the transceiver channel, but only
when you use the 'Channel and TX PLL select/reconfig' dynamic reconfiguration
mode. For more information about implementing a .mif in a HardCopy ASIC,
refer to the HardCopy IV Device Family Overview chapter in volume 1 of the
HardCopy IV Device Handbook.
■ PMA controls—This term represents Analog controls (VOD, Pre-emphasis,
Manual Equalization) as displayed in both the ALTGX and ALTGX_RECONFIG
MegaWizard Plug-In Managers.
■ PMA-only channels—This term refers to both the CMU channels as well as the
regular transceiver channels with only the PMA blocks enabled. When you
configure the ALTGX MegaWizard Plug-In Manager in Basic (PMA Direct)
protocol in the General screen, all the channels get configured as PMA-only
channels.
■ Regular transceiver channel—This term refers to a transmitter channel or a
receiver channel or a duplex channel that has both PMA and physical coding
sublayer (PCS) blocks.
HardCopy IV Device Handbook, Volume 3
© June 2009 Altera Corporation