
3–28
Chapter 3: Cyclone IV Dynamic Reconfiguration
Dynamic Reconfiguration Modes
November 2011
Altera Corporation
Clocking/Interface Options
The following describes the
Clocking/Interface
options available in Cyclone IV GX
devices. The core clocking setup describes the transceiver core clocks that are the
write and read clocks of the Transmit Phase Compensation FIFO and the Receive
Phase Compensation FIFO, respectively. Core clocking is classified as transmitter core
clocking and receiver core clocking.
lists the supported clocking interface settings for channel reconfiguration
mode in Cyclone IV GX devices.
Transmitter core clocking refers to the clock that is used to write the parallel data from
the FPGA fabric into the Transmit Phase Compensation FIFO. You can use one of the
following clocks to write into the Transmit Phase Compensation FIFO:
■
tx_coreclk
—you can use a clock of the same frequency as
tx_clkout
from the
FPGA fabric to provide the write clock to the Transmit Phase Compensation FIFO.
If you use
tx_coreclk
, it overrides the
tx_clkout
options in the ALTGX
MegaWizard Plug-In Manager.
■
tx_clkout
—the Quartus II software automatically routes
tx_clkout
to the FPGA
fabric and back into the Transmit Phase Compensation FIFO.
Table 3–6. Dynamic Reconfiguration Clocking Interface Settings in Channel Reconfiguration
Mode
ALTGX Setting
Description
Dynamic Reconfiguration Channel Internal and Interface Settings
How should the receivers be
clocked?
Select one of the available options:
■
Share a single transmitter core clock between receivers
■
Use the respective channel transmitter core clocks
■
Use the respective channel receiver core clocks
How should the transmitters be
clocked?
Select one of the available options:
■
Share a single transmitter core clock between transmitters
■
Use the respective channel transmitter core clocks
Содержание Cyclone IV
Страница 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 106: ...II 2 Section II I O Interfaces Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 164: ...III 2 Section III System Integration Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 276: ...viii Chapter Revision Dates Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 280: ...I 2 Section I Transceivers Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Страница 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Страница 446: ......