Altera UG-01080 Betriebsanweisung Seite 190

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9–16 Chapter 9: Custom PHY IP Core
Data Interfaces
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Table 912 describes the signals in the Avalon-ST output interface. These signals are
driven from the PCS to the MAC. This is an Avalon source interface.
Table 913 describes the differential serial data interface and the status signals for the
RX interface.
tx_datak[<n>(<w>/<s>)-1:0]
Input
Data and control indicator for the received data. When 0, indicates that
tx_data
is data, when 1, indicates that
tx_data
is control.
tx_forcedisp[<n>(<w>/<s>)-1:0]
Input
When asserted, this control signal enables disparity to be forced on the
TX channel. This signal is created if you turn On the Enable manual
disparity control option on the 8B/10B tab.
tx_dispval[<n>(<w>/<s>)-1:0]
Input
This control signal specifies the disparity of the data. This port is
created if you turn On the Enable disparity control option on the
8B/10B tab.
Table 9–11. Avalon-ST TX Interface Signals
Signal Name Direction Description
Table 9–12. Avalon-ST RX Interface Signals
Signal Name Direction Description
rx_parallel_data[<n><w>-1:0]
Output
This is RX parallel data driven from the Custom PHY IP Core. The
ready latency on this interface is 0, so that the MAC must be able
to accept data as soon as the PHY comes out of reset. Data
driven from this interface is always valid.
rx_clkout[<n>-1:0]
Output This is the clock for the RX parallel data source interface.
rx_datak[<n>(<w>/<s>)-1:0]
Output
Data and control indicator for the source data. When 0, indicates
that
rx_parallel_data
is data, when 1, indicates that
rx_parallel_data
is control.
rx_runningdisp[<n>(<w>/<s>)-1:0]
Output This status signal indicates the disparity of the incoming data.
rx_enabyteord[<n>-1:0]
Input
This signal is created if you turn On the Enable byte ordering
block control option on the Byte Order tab. A byte ordering
operation occurs whenever
rx_enabyteord
is asserted. To
perform multiple byte ordering operations, deassert and reassert
rx_enabyteord
.
Table 9–13. Serial Interface and Status Signals
Signal Name Direction Signal Name
rx_serial_data[<n>-1:0]
Input Receiver differential serial input data.
tx_serial_data[<n>-1:0]
Output Transmitter differential serial output data.
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