Altera Triple Speed Ethernet MegaCore Function Manuel d'utilisateur Page 132

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 223
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 131
DescriptionI/OName
125-MHz TBI transmit clock from external SERDES, typically sourced
by the local reference clock oscillator.
Itbi_tx_clk
125-MHz TBI receive clock from external SERDES, typically sourced
by the line clock recovered from the encoded line stream.
Itbi_rx_clk
TBI receive data. This bus carries the data from the external SERDES.
Synchronize the bus with tbi_rx_clk. The data can be arbitrary
aligned.
Itbi_rx_d[9:0]
Status LED Control Signals
Table 7-20: Status LED Interface Signals
DescriptionI/OName
When asserted, this signal indicates a successful link synchronization.Oled_link
When asserted, this signal indicates some activities on the transmit
and receive paths. When deasserted, it indicates no traffic on the
paths.
Oled_crs
When asserted, this signal indicates that a collision was detected
during frame transmission. This signal is always deasserted when the
PCS function operates in standard 1000BASE-X mode or in full-
duplex mode when SGMII is enabled.
Oled_col
Auto-negotiation status. The PCS function asserts this signal when
an auto-negotiation completes.
Oled_an
10-bit character error. Asserted for one tbi_rx_clk cycle when an
erroneous 10-bit character is detected.
Oled_char_err
10-bit running disparity error. Asserted for one tbi_rx_clk cycle
when a disparity error is detected. A running disparity error indicates
that more than the previous and perhaps the current received group
had an error.
Oled_disp_err
SERDES Control Signals
Table 7-21: SERDES Control Signal
DescriptionI/OName
Power-down enable. Asserted when the PCS function is in power-
down mode; deasserted when the PCS function is operating in normal
mode. This signal is implemented only when an external SERDES is
used.
Opowerdown
SERDES Loopback Control. Asserted when the PCS function operates
in loopback mode. You can use this signal to configure an external
SERDES device to operate in loopback mode.
Osd_loopback
Altera Corporation
Interface Signals
Send Feedback
7-17
Status LED Control Signals
UG-01008
2014.06.30
Vue de la page 131
1 2 ... 127 128 129 130 131 132 133 134 135 136 137 ... 222 223

Commentaires sur ces manuels

Pas de commentaire