Altera Stratix IV Device Handbook page 880

Chapter 5: Dynamic Reconfiguration in Stratix IV Devices
Dynamic Reconfiguration Modes Implementation
There are two signals available when you enable the Channel Interface option:
■ tx_datainfull—The width of this input signal depends on the number of
channels you set up in the General screen. It is 44 bits wide per channel. This
signal is available only for Transmitter only and Receiver and Transmitter
configurations. This port replaces the existing tx_datain port.
■ rx_dataoutfull—The width of this output signal depends on the number of
channels you set up in the General screen. It is 64 bits wide per channel. This
signal is available only for Receiver only and Receiver and Transmitter
configurations. This port replaces the existing rx_dataout port.
1
In addition to these two ports, you can select the necessary control and status signals
for the reconfigured channel in the Clocking/Interface screen.
f
For more information about control and status signals, refer to the "Transceiver Port
Lists" section in the
These control and status signals are not applicable in Basic (PMA Direct) functional
mode.
option.
Table 5–8. Control and Status Signals Not Applicable in Basic (PMA Direct) Mode with the
Channel Interface Option Enabled
The Quartus II software has legal checks for the connectivity of tx_datainfull and
rx_dataoutfull and the various control and status signals you enable in the
Clocking/Interface screen.
For example, the Quartus II software allows you to select and connect the pipestatus
and powerdn signals. It assumes that you are planning to switch to and from PCIe
functional mode.
channel interface signals.
January 2014 Altera Corporation
Transceiver Architecture in Stratix IV Devices
Table 5–8 lists the signals not available when you enable the Channel Interface
FPGA Fabric-Receiver Interface
rx_dataout
rx_syncstatus
rx_patterndetect
rx_a1a2sizeout
rx_ctrldetect
rx_errdetect
rx_disperr
Table 5–9 lists the tx_datainfull[43:0] FPGA fabric-transceiver
chapter.
FPGA Fabric-Transmitter Interface
tx_datain
tx_ctrlenable
tx_forcedisp
tx_dispval
Stratix IV Device Handbook
Volume 2: Transceivers
5–37