參數(shù)資料
型號(hào): 91C94
廠商: SMSC Corporation
英文描述: ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM
中文描述: 的ISA / PCMCIA的單芯片以太網(wǎng)控制器與RAM
文件頁數(shù): 28/120頁
文件大?。?/td> 447K
代理商: 91C94
15
Table 1 - Bus Transactions in ISA Mode
A0
nSBHE
D0-7
D8-15
8 BIT MODE
((nEN16=1) (16BIT=0))
0
X
even byte
-
1
X
odd byte
-
16 BIT MODE
otherwise
0
even byte
odd byte
0
1
even byte
-
1
0
-
odd byte
1
invalid cycle
Table 2 - Bus Transactions in PCMCIA Mode
A0
nCE1
nCE2
D0-7
D8-15
8 BIT MODE
((IOis8=1) +
(nEN16=1).(16BIT=0))
0
X
even byte
-
1
0
X
odd byte
-
X
1
X
NO CYCLE
16 BIT MODE
otherwise
0
even byte
odd byte
0
1
even byte
-
1
0
1
odd byte
X
1
0
-
odd byte
X
1
NO CYCLE
16BIT: CONFIGURATION REGISTER bit 7
IOis8: CSR register bit 5
nEN16: pin nEN16
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