Altera Low Latency 40-Gbps Ethernet MAC and PHY MegaCore Function User Manual
Page 147
Address
Name-
Description
Access
0x934
CNTR_RX_RUNT_LO
Number of received runt packets (lower 32 bits)
A run is a packet of size less than 64 bytes but greater than
eight bytes. If a packet is eight bytes or smaller, it is
considered a decoding error and not a runt frame, and the
IP core does not flag it nor count it as a runt.
RO
0x935
CNTR_RX_RUNT_HI
Number of received runt packets (upper 32 bits)
A run is a packet of size less than 64 bytes but greater than
eight bytes. If a packet is eight bytes or smaller, it is
considered a decoding error and not a runt frame, and the
IP core does not flag it nor count it as a runt.
RO
0x936
CNTR_RX_ST_LO
Number of received frame starts (lower 32 bits)
RO
0x937
CNTR_RX_ST_HI
Number of received frame starts (upper 32 bits)
RO
0x938–
0x93F
Reserved
0x940
RXSTAT_REVID
RX statistics module revision ID.
RO
0x941
RXSTAT_SCRATCH
Scratch register available for testing. Default value is 0x09. RW
0x942
RXSTAT_NAME_0
First 4 characters of IP core variation identifier string
"040gMacStats" or "100gMacStats"
RO
0x943
RXSTAT_NAME_1
Next 4 characters of IP core variation identifier string
"040gMacStats" or "100gMacStats"
RO
0x944
RXSTAT_NAME_2
Final 4 characters of IP core variation identifier string
"040gMacStats" or "100gMacStats"
RO
0x945
CNTR_RX_CONFIG
Bits [1:0]: Configuration of RX statistics counters:
• Bit [2]: Shadow request (active high): When set to the
value of 1, RX statistics collection is paused. The
underlying counters continue to operate, but the
readable values reflect a snapshot at the time the pause
flag was activated. Write a 0 to release.
• Bit [1]: Parity-error clear. When software sets this bit,
the IP core clears the parity bit
CNTR_RX_STATUS[0]
.
This bit (
CNTR_RX_CONFIG[1]
) is self-clearing.
• Bit [0]: Software can set this bit to the value of 1 to reset
all of the RX statistics registers at the same time. This
bit is self-clearing.
Bits [31:3] are Reserved.
RW
3-102
RX Statistics Registers
UG-01172
2015.05.04
Altera Corporation
Functional Description