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7-1
Physical Interface (PHY)
This chapter describes ThunderLAN support for all IEEE 802.3-compliant de-
vices through its media independent interface (MII). These include the internal
10Base-T physical interface (PHY) and any MII-compliant networking PHYs.
It also discusses IEEE 802.12-compliant devices which are supported when
ThunderLAN is used in conjunction with Texas Instruments TNETE211
100VG-AnyLAN physical media independent (PMI) device. The TNETE211
implements 802.12 media access controller (MAC) state machines for 100VG-
AnyLAN operation, and provides an 802.12-compatible MII.
In addition, interrupt-driven PHYs can be implemented through the use of the
enhanced MII. ThunderLAN can use nonmanaged (no serial management in-
terface) MII devices. ThunderLAN also supports bit-level PHYs.
Topic Page
7.1 MII-Enhanced Interrupt Event Feature 7-2. . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Nonmanaged MII Devices 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Bit-Rate Devices 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 PHY Initialization 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 7