參數(shù)資料
型號(hào): AM79C940KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: Media Access Controller for Ethernet (MACE)
中文描述: 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP10
封裝: PLASTIC, QFP-100
文件頁數(shù): 56/122頁
文件大?。?/td> 914K
代理商: AM79C940KCW
AMD
56
Am79C940
data without addition of an FCS field, and the FCS will be
calculated and verified at the receiver.
The loopback facilities of the MACE device allow full op-
eration to be verified without disturbance to the network.
Loopback operation is also affected by the state of the
Loopback Control bits (LOOP [0–1]) in the User Test
Register. This affects whether the internal MENDEC is
considered part of the internal or external loop-
back path.
When in the loopback mode(s), the multicast address
detection feature of the MACE device, programmed by
the contents of the Logical Address Filter (LADR [63–0])
can only be tested when RCVFCSE = 1, allocating the
CRC generator to the receiver. All other features
operate identically in loopback as in normal operation,
such as automatic transmit padding and receive
pad stripping.
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