參數(shù)資料
型號(hào): 83C795
廠商: SMSC Corporation
英文描述: Ethernet System Controller
中文描述: 以太網(wǎng)系統(tǒng)控制器
文件頁數(shù): 12/136頁
文件大?。?/td> 1996K
代理商: 83C795
3.0
The principle sections of the device are the:
Host interface which mediates host access to
internal registers and buffer memory.
LAN Controller which performs 802.3 MAC
layer protocol and does supporting DMA
transfers to and from local buffer memory.
Serial line interface which supplies drivers and
receivers for AUI and TP interfaces and port
control logic for the 10BASE-T interface. In
addition, it provides Manchester encoding and
decoding.
FUNCTIONAL DESCRIPTION
3.1
Figure 3-1 illustrates the data path for a
83C795-based board. All internal byte swapping is
handled by the memory cache. The data bus
drivers are designed to drive the ISA bus directly.
DESCRIPTION OF DATA PATH
3.2
A number of conventions are used in this databook.
CONVENTIONS
1. A bit may be described as "low" or "logical 0"
when its value is set to 0. A bit is described
as "high" or "logical 1" when its value is set
to 1.
2. The location of a bit is frequently described
in this manner:
<register>.<bit>
For example, since the bit MENB is located
in the CR Register, it might be described in
this book as CR.MENB. Or, alternatively,
since MENB is the sixth bit in the CR Regis-
ter, it might also be described in this manner:
CR.6
FUNCTIONAL DESCRIPTION
83C795
3
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