HFIXF1110CC.B3-998844 Cortina Systems Inc, HFIXF1110CC.B3-998844 Datasheet - Page 51

• Manufacturer Part Number: HFIXF1110CC.B3-998844
• Description: IC ETHERNET MAC 10PORT 552-CBGA
• Manufacturer: Cortina Systems Inc

Specifications of HFIXF1110CC.B3-998844

• Controller Type: Ethernet Controller, MAC
• Interface: SPI-4.2
• Voltage - Supply: 1.8 V, 2.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 575-BCBGA Exposed Pad (552 Bumps)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: 1008-1010

IXF1110 MAC
Datasheet
250210, Revision 11.0
13 April 2009
5.1.8
5.1.8.1
Table 16
Cortina Systems
etherStatsIndex
etherStatsDataSource
etherStatsDropEvents
1. The RMON spec requires that this is, “The total number of events where packets were dropped by the probe due to a lack of
2. TheIXF1110 MAC has an extra counter RX/TXUCPkts that can be used.
3. The IXF1110 MAC has an extra counter RX/TXPktstoMaxOctets that can be used in addition to the RMON stats. This is
RMON Ethernet Statistics
resources. Note that this number is not necessarily the number of packets dropped; it is the number of times this condition
has been detected.” The RX/TX FIFO Number of Frames Removed Register in the IXF1110 MAC supports this and will
increment when either an RX or TX FIFO has over flowed. If any IXF1110 MAC programmable packet filtering is enabled, the
RX/TX Number of Frames Removed Register increments with every frame removed in addition to the existing frames
counted due to FIFO overflow.
required to accommodate the Jumbo packet frames requirement.
Group 1 Statistics
The IXF1110 MAC checks the CRC for all legal length jumbo frames (frames between 1519
and the Max Frame Size). On transmission, the MAC can be programmed to append the
CRC to the frame or check the CRC and increment the appropriate counter. On reception,
the MAC transmits these frames across the SPI4-2 interface (jumbo frames with a bad CRC
cannot be dropped and are sent across the SPI4-2 interface). If the receive frame has a bad
CRC, the appropriate counter is incremented and the EOP Abort code is set in the SPI4-2
control word.
Jumbo frames also impact flow control. The maximum frame size needs to be taken into
account when determining the FIFO watermarks. The current transmission must be
completed before a Pause frame can be transmitted (needed when the receiver FIFO high
watermark has been exceeded). If the current transmission is a jumbo frame, the delay may
be significant and increase data loss due to insufficient available FIFO space.
RMON Statistics Support
RMON Statistics
The IXF1110 MAC supplies RMON statistics via the CPU interface. These statistics are
available in the form of counter values that can be accessed at specific addresses in the
IXF1110 MAC memory map. Once read, these counters automatically reset and begin
counting from zero. A separate set of RMON statistics is available for each MAC device in
the IXF1110 MAC.
Implementation of the RMON Statistics block is similar to the functionality provided by
existing Cortina switch and router products. This implementation allows the IXF1110 MAC to
provide all of the RMON Statistics group as defined by RFC2819.
The IXF1110 MAC supports the RMON RFC2819 Group 1 statistics counters.
notes the differences and additional statistics registers supported by the IXF1110 MAC that
are outside the scope of the RMON RFC2819 document.
RMON Additional Statistics Registers (Sheet 1 of 2)
®
• TXOctetsTotalOK (Addr: Port_Index + 0x40)
• TxPkts1519toMaxOctets (Addr: Port_Index + 0x4B)
• TxExcessiveLengthDrop (Addr: Port_Index + 0x53)
• TXCRCError (Addr: Port_Index + 0x56)
IXF1110 10-Port 1000 Mbps Ethernet Media Access Controller
Integer32
Object
Identifier
Counter32
Type
N/A
N/A
RX/TX FIFO Number of
Frames Removed
IXF1110 MAC Equivalent
Statistics
N/A
N/A
Counter32
Type
N/A
N/A
See Table note 1.
IXF1110 MAC Documentation
Definition of RMON Versus
5.1 Media Access Controller
Table 16
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