16
Platform Notes: The hme Fast Ethernet Device Driver—May 1996
3
The parameters in Table 3-7 define the capabilities of the hardware. The
internal transceiver can support all of these capabilities. The capabilities of the
external transceiver are dependent on the device. If the external transceiver is
not capable of auto-negotiation but has the capability of all speeds and modes
(100 Mbps, 10 Mbps, half-duplex, and full-duplex), you must determine the
capabilities of the external transceiver.
Reporting the Link Partner Capabilities
Table 3-8 describes the read-only link partner capabilities.
100hdx_cap
0
1
Local transceiver capability of the
hardware; initialized at startup
= Not 100Mbit/sec half-duplex capable
= 100Mbit/sec half-duplex capable
10fdx_cap
0
1
Local transceiver capability of the
hardware; initialized at startup
= Not 10Mbit/sec full-duplex capable
= 10Mbit/sec full-duplex capable
10hdx_cap
0
1
Local transceiver capability of the
hardware; initialized at startup
= Not 10Mbit/sec half-duplex capable
= 10Mbit/sec half-duplex capable
Table 3-8
Read-Only Link Partner Capabilities
Parameter
Values
Description
lp_autoneg_cap
0
1
= No auto-negotiation
= Auto-negotiation
lp_100T4_cap
0
1
= No 100BASE-T4
= 100BASE-T4
lp_100fdx_cap
0
1
= No100Mbit/sec full-duplex transmission
= 100Mbit/sec full-duplex
Table 3-7
Read-Only Transceiver Capabilities
Parameter
Values
Description
