Altera 40-Gbps Ethernet MAC and PHY MegaCore Function - Manual (Page 86)

Signal Name Direction Description
local_fault_status Output
Asserted when local fault is detected in RX MAC in a duplex IP
core variation. In duplex IP core variations,
local_fault_from_
rx
is connected internally to
local_fault_to_tx
, and this signal
is available externally as
local_fault_status
.
Related Information
• Link Fault Signaling Registers on page 3-88
Information about the
Enable Link Fault Sequence
register and the
MAC/RS link fault
sequence configuration
register.
• IEEE website
The IEEE 802.3ba –2010 100G Ethernet Standard is available on the IEEE website.
Statistics Counters Interface
The statistics counters module is a synthesis option that you select in the 40-100GbE parameter editor.
However, the statistics status bit output vectors are provided whether you select the statistics counters
module option or not.
The increment vectors are brought to the top level as output ports. If you configure the statistics counters
module, the increment vectors also function as input ports to the control and status registers (CSR).
Table 3-9: Statistics Counters Increment Vectors
The TX statistics counter increment vectors are clocked by the
clk_txmac
clock, and the RX statistics counter
increment vectors are clocked by the
clk_rxmac
clock.
Name Signal
Direction
Description
TX Statistics Counter Increment Vectors
tx_inc_64 Output Asserted for one cycle when a 64-byte TX frame is transmitted.
tx_inc_127 Output Asserted for one cycle when a 65–127 byte TX frame is transmitted.
tx_inc_255 Output Asserted for one cycle when a 128–255 byte TX frame is transmitted.
tx_inc_511 Output Asserted for one cycle when a 256–511 byte TX frame is transmitted.
tx_inc_1023 Output Asserted for one cycle when a 512–1023 byte TX frame is transmitted.
tx_inc_1518 Output Asserted for one cycle when a 1024–1518 byte TX frame is transmitted.
tx_inc_max Output Asserted for one cycle when a maximum-size TX frame is transmitted.
tx_inc_over Output Asserted for one cycle when an oversized TX frame is transmitted.
UG-01088
2014.12.15
Statistics Counters Interface 3-39
Functional Description Altera Corporation
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