AN983B Datasheet, PDF (19/91 Pages) List of Unclassifed Manufacturers – PCI/miniPCI-to-Ethernet LAN Controller

AN983B PCI/miPCI Fast Ethernet Controller with integrated PHY
7. REGISTERS AND DESCRIPTORS DESCRIPTION
There are three kinds of registers designed for AN983B. They are AN983B configuration
registers, PCI control/status registers, and Transceiver control/status registers.
The AN983B configuration registers are used to initialize and configure the AN983B for
identifying and querying the AN983B.
The PCI control/status registers are used to communicate between host and AN983B. Host can
initialize, control, and read the status of the AN983B through the mapped I/O or memory address
space.
Regarding the registers of transceiver portion of AN983B, it includes 7 basic registers which are
defined according to the clause 22 “Reconciliation Sub-layer and Media Independent Interface”
and clause 28 “Physical Layer link signaling for 10 Mb/s and 100 Mb/s Auto-Negotiation on
twisted pair” of IEEE802.3u standard. The AN983B also provides receive and transmit
descriptors for packet buffering and management. These descriptors are described in the
following section
Rev. 1.8
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