Altera UG-01080 Betriebsanweisung Seite 373

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Chapter 15: Cyclone V Transceiver Native PHY IP Core 15–19
Standard PCS Interface Ports
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Table 15–19 describes the ports available for the Standard PCS interface.
Table 15–19. Standard PCS Interface Ports (Part 1 of 3)
Name Dir
Synchronou
s to
tx_std_core
clkin/
rx_std_core
clkin
Description
Clocks
tx_std_clkout[<n>-1:0]
Output
TX Parallel clock output as shown in The Standard PCS
Datapath figure.
rx_std_clkout[<n>-1:0]
Output
RX parallel clock output as shown in The Standard PCS
Datapath figure. The CDR circuitry recovers RX parallel clock
from the RX data stream.
tx_std_coreclkin[<n>-1:0]
Input
TX parallel clock input from the FPGA fabric that drives the
write side of the TX phase compensation FIFO as shown in
The Standard PCS Datapath figure.
rx_std_coreclkin[<n>-1:0]
Input
RX parallel clock that drives the read side of the RX phase
compensation FIFO The Standard PCS Datapath figure.
Phase Compensation FIFO
rx_std_pcfifo_full
[<n>-1:0]
Output Yes RX phase compensation FIFO full status flag.
rx_std_pcfifo_empty
[<n>-1:0]
Output Yes RX phase compensation FIFO status empty flag.
tx_std_pcfifo_full
[<n>-1:0]
Output Yes TX phase compensation FIFO status full flag.
tx_std_pcfifo_empty
[<n>-1:0]
Output Yes TX phase compensation FIFO status empty flag.
Byte Ordering
rx_std_byteorder_ena
[<n>-1:0]
Input No
Byte ordering enable. When this signal is asserted, the byte
ordering block initiates a byte ordering operation if the Byte
ordering control mode is set to manual. Once byte ordering
has occurred, you must deassert and reassert this signal to
perform another byte ordering operation. This signal is an
synchronous input signal; however, it must be asserted for at
least 1 cycle of
rx_std_clkout
.
rx_std_byteorder_flag
[<n>-1:0]
Output Yes
Byte ordering status flag. When asserted, indicates that the
byte ordering block has performed a byte order operation.
This signal is asserted on the clock cycle in which byte
ordering occurred. This signal is synchronous to the
rx_std_clkout
clock. You must a synchronizer this signal.
Byte Serializer and Deserializer
rx_std_byterev_ena
[<n>-1:0]
Input No
This control signal is available in when the PMA width is 16
or 20 bits. When asserted, enables byte reversal on the RX
interface.
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