
15–20 Chapter 15: Cyclone V Transceiver Native PHY IP Core
Standard PCS Interface Ports
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
8B/10B
rx_std_polinv[<n>-1:0]
Input No
Polarity inversion for the 8B/10B decoder, When set, the RX
channels invert the polarity of the received data. You can use
this signal to correct the polarity of differential pairs if the
transmission circuitry or board layout mistakenly swapped
the positive and negative signals. The polarity inversion
function operates on the word aligner input.
tx_std_polinv[<n>-1:0]
Input No
Polarity inversion, part of 8B10B encoder, When set, the TX
interface inverts the polarity of the TX data.
Rate Match FIFO
rx_std_rmfifo_empty[<n>-
1:0]
Output No
Rate match FIFO empty flag. When asserted, the rate match
FIFO is empty.
rx_std_rmfifo_full[<n>-
1:0]
Output No
Rate match FIFO full flag. When asserted the rate match FIFO
is full. You must synchronize this signal.
Word Aligner
rx_std_bitrev_ena[<n>-
1:0]
Input No
When asserted, enables bit reversal on the RX interface. Bit
order may be reversed if external transmission circuitry
transmits the most significant bit first. When enabled, the
receive circuitry receives all words in the reverse order. The
bit reversal circuitry operates on the output of the word
aligner.
tx_std_bitslipboundarysel
[5<n>-1:0]
Input No
Bit-Slip boundary selection signal. Specifies the number of
bits that the TX bit slipper must slip.
rx_std_bitslipboundarysel
[5<n>-1:0]
Output No
This signal operates when the word aligner is in bit-slip word
alignment mode. It reports the number of bits that the RX
block slipped to achieve deterministic latency.
rx_std_runlength_err[<n>-
1:0]
Output No
When asserted, indicates a run length violation. Asserted if
the number of consecutive 1s or 0s exceeds the number
specified in the parameter editor GUI.
rx_st_wa_patternalign
Input No
Active when you place the word aligner in manual mode. In
manual mode, you align words by asserting
rx_st_wa_patternalign
.
rx_st_wa_patternalign
is
edge sensitive.
For more information refer to the Word Aligner section in
Transceiver Architecture in Cyclone V Devices.
rx_std_wa_a1a2size[<n>-
1:0]
Input No
Used for the SONET protocol. Assert when the A1 and A2
framing bytes must be detected. A1 and A2 are SONET
backplane bytes and are only used when the PMA data width
is 8 bits.
Table 15–19. Standard PCS Interface Ports (Part 2 of 3)
Name Dir
Synchronou
s to
tx_std_core
clkin/
rx_std_core
clkin
Description
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