HC4GX15 Datasheet, PDF (459/668 Pages) Altera Corporation – HardCopy IV Device Handbook

2. HardCopy IV GX Dynamic
Reconfiguration
HIV53002-1.0
Introduction
Dynamic reconfiguration is a feature available for HardCopy^® IV GX transceivers.
Each transceiver channel has multiple physical medium attachment (PMA) controls
that you can program to achieve the desired bit error ratio (BER) for your system.
When you enable the dynamic reconfiguration feature, you can reconfigure the PMA
controls, functional blocks, CMU phased-locked loops (PLLs), receiver clock data
recovery (CDR), and input reference clocks of a transceiver channel without powering
down other transceiver channels or the core fabric logic of the device.
This chapter contains the following sections:
■ “Conventions Used in this Chapter”
■ “Dynamic Reconfiguration Modes” on page 2–3
■ “Quartus II MegaWizard Plug-In Manager Interfaces to Support Dynamic
Reconfiguration” on page 2–5
■ “Offset Cancellation Control for Receiver Channels” on page 2–43
■ “The rx_tx_duplex_sel[1:0] Port” on page 2–49
■ “The logical_channel_address Port” on page 2–51
■ “PMA Controls Reconfiguration” on page 2–52
■ “Description of Transceiver Channel Reconfiguration Modes” on page 2–62
■ “Error Indication in the ALTGX_RECONFIG MegaWizard Plug-In Manager” on
page 2–139
■ “Combining Transceiver Channels with Dynamic Reconfiguration Enabled” on
page 2–140
■ “Dynamic Reconfiguration Duration and Core Fabric Resource Utilization” on
page 2–143
■ “Functional Simulation of the Offset Cancellation Process” on page 2–147
Conventions Used in this Chapter
The following conventions are used in this chapter:
■ ALTGX_RECONFIG Instance—This term represents the dynamic reconfiguration
controller instance generated by the ALTGX_RECONFIG MegaWizard™ Plug-In
Manager. This term is used when the various inputs, outputs, and connections to
the controller are explained.
■ ALTGX Instance—This term represents the transceiver instance generated by the
ALTGX MegaWizard Plug-In Manager. This term is used when the various inputs,
outputs, and connections to the transceiver channels are explained.
© June 2009 Altera Corporation
HardCopy IV Device Handbook, Volume 3