
DescriptionValueName
Determines the Ethernet-side interface of the
MAC block.
• MII—The only option available for 10/100
Mb Small MAC core variations.
• GMII—Available only for 1000 Mb Small
MAC core variations.
• RGMII—Available for 10/100/1000 Mb
Ethernet MAC and 1000 Mb Small MAC core
variations.
• MII/GMII—Available only for 10/100/1000
Mb Ethernet MAC core variations. If this is
selected, media independent interface (MII)
is used for the 10/100 interface, and gigabit
media independent interface (GMII) for the
gigabit interface.
• MII
• GMII
• RGMII
• MII/GMII
Interface
Turn on this option to include internal FIFO
buffers in the core. You can only include internal
FIFO buffers in single-port MACs.
On/OffUse internal FIFO
Specifies the number of Ethernet ports supported
by the IP core. This parameter is enabled if the
parameter Use internal FIFO is turned off. A
multiport MAC does not support internal FIFO
buffers.
1, 4, 8, 12, 16, 20, and 24Number of ports
This option is only available for variations that
include the PCS block.
• None—the PCS block does not include an
integrated transceiver module. The PCS block
implements a ten-bit interface (TBI) to an
external SERDES chip.
• LVDS I/O or GXB—the MegaCore function
includes an integrated transceiver module to
implement a 1.25 Gbps transceiver.
Respective GXB module is included for target
devices with GX transceivers. For target
devices with LVDS I/O including Soft-CDR
such as Stratix III, the ALTLVDS module is
included.
• None
• LVDS I/O
• GXB
Transceiver type
Ethernet MAC Options
These options are enabled when your variation includes the MAC function. In small MACs, only the following
options are available:
Parameter Settings
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Ethernet MAC Options
3-2
2014.06.30
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