Specifications

Hardware Reference 15
C613-03023-00 REV P
■ Individual port forced full duplex and 100BASE-TX modes when auto-
negotiation is disabled
■ Wire speed reception and transmission
■ Integrated address look-up engine, supporting 1K absolute MAC
addresses
■ Automatic address learning, address aging, and address migration
■ Broadcast storm protection
■ Full duplex IEEE 802.3x flow control
■ Half duplex back pressure flow control
■ MDI/MDI-X auto cross over support
Some features, such as autonegotiation, buffer size, and MAC address aging,
are configured by adding or removing links on the PIC board. Figure 10 shows
the location of the configurable links on the board, and Table 10 on page 16 lists
the configurable features, their respective links, and their default settings.
Figure 10: Location of user configurable links on the AT-AR026 4ETH PIC
Up = 10kΩ link between pads 1 and 2
Down = 1kΩ link between pads 2 and 3
Floating = No links
All configurable links use 603 resistors
1 2 3
Pads
Ethernet ports
PIC connector
Link Detail
AR026C
Configurable links
Link Options
Links 22, 31, 40, and MRXD 3 are fixed and
cannot be configured
Link