HC4GX15 Datasheet, PDF (548/668 Pages) Altera Corporation – HardCopy IV Device Handbook

2–90
Chapter 2: HardCopy IV GX Dynamic Reconfiguration
Description of Transceiver Channel Reconfiguration Modes
There are two new signals available when you enable this 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 new ports, you can select the necessary control and
status signals for the reconfigured channel in the Reconfig 2 screen.
f For more information about control and status signals, refer to the
Transceiver Port List in the HardCopy IV GX Transceiver Architecture chapter in
volume 3 of the HardCopy IV Device Handbook.
These control and status signals are not applicable in Basic (PMA Direct)
functional mode. The following signals are not available when you enable this
option.
Core fabric-Receiver interface:
■ rx_dataout
■ rx_syncstatus
■ rx_patterndetect
■ rx_a1a2sizeout
■ rx_ctrldetect
■ rx_errdetect
■ rx_disperr
Core fabric-Transmitter interface:
■ tx_datain
■ tx_ctrlenable
■ tx_forcedisp
■ tx_dispval
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 Reconfig 2 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 PCI Express (PIPE) functional mode. Table 2–28 describes the
tx_datainfull[43:0] core fabric-Transceiver channel interface signals.
HardCopy IV Device Handbook, Volume 3
© June 2009 Altera Corporation