AN985B/BX
Registers and Descriptors Description
8
Registers and Descriptors Description
There are three kinds of registers designed for AN985B/BX. They are AN985B/BX configuration registers,
CARDBUS control/status registers, and Transceiver control/status registers.
The AN985B/BX configuration registers are used to initialize and configure the AN985B/BX for identifying and
querying the AN985B/BX.
The CARDBUS control/status registers are used to communicate between host and AN985B/BX. Host can
initialize, control, and read the status of the AN985B/BX through the mapped I/O or memory address space.
Regarding the registers of transceiver portion of AN985B/BX, there are 11 basic registers with 16bits supporting
for AN985B/BX. 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 Mbit/s and 100 Mbit/s
Auto-Negotiation on twisted pair” of IEEE802.3u standard. The AN985B/BX also provides receiving and
transmitting descriptors for packet buffering and management. These descriptors are described in the following
section
Data Sheet
33
Rev. 1.51, 2005-11-30
INFINEON [ Infineon ]
