Altera PHY IP Core Guide de l'utilisateur Page 335

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 626
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 334
6. Ensure that RX rate match FIFO mode is disabled.
7. Set the RX word aligner mode to bitslip.
8. Set the RX word aligner pattern length to 7 or 16.
Note: TX bitslip, RX bitslip, bit reversal, and polarity inversion modes are supported.
TX Bit Slip
To use the TX bit slip, select the Enable TX bitslip and Enable tx_std_bitslipboundarysel port options.
This adds the tx_std_bitslipboundarysel input port. The TX PCS automatically slips the number of
bits specified by tx_std_bitslipboundarysel. There is no port for TX bit slip. If there is more than one
channel in the design, tx_std_bitslipboundarysel ports are multiplied by the number of channels. You
can verify this feature by monitoring the tx_parallel_data port.
Enabling the TX bit slip feature is optional.
Note: The rx_parallel_data values in the following figures are based on the TX and RX bit reversal
features being disabled.
Figure 2-130: TX Bit Slip in 8-bit Mode
tx_parallel_data = 8'hbc. tx_std_bitslipboundarysel = 5'b00001 (bit slip by 1 bit).
tx_std_bitslipboundarysel
tx_parallel_data
rx_parallel_data
00001
bc
79
Figure 2-131: TX Bit Slip in 10-bit Mode
tx_parallel_data = 10'h3bc. tx_std_bitslipboundarysel = 5'b00011 (bit slip by 3 bits).
tx_std_bitslipboundarysel
tx_parallel_data
rx_parallel_data
00011
3bc
1e7
Figure 2-132: TX Bit Slip in 16-bit Mode
tx_parallel_data = 16'hfcbc. tx_std_bitslipboundarysel =5'b00011 (bit slip by 3 bits).
tx_std_bitslipboundarysel
tx_parallel_data
rx_parallel_data
00011
fcbc
5e7f
2-304
TX Bit Slip
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
Send Feedback
Vue de la page 334
1 2 ... 330 331 332 333 334 335 336 337 338 339 340 ... 625 626

Commentaires sur ces manuels

Pas de commentaire