參數(shù)資料
型號(hào): LAN91C94
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): 49/55頁
文件大?。?/td> 482K
代理商: LAN91C94
FEAST Fast Ethernet Controller
for PCMCIA and Generic 16-Bit Applications
SMSC DS – LAN91C110 REV. B
Page 49
Rev. 09/05/02
TIMING DIAGRAMS
FIGURE 13 - ASYNCHRONOUS CYCLE - NADS=0
PARAMETER
MIN
25
TYP
MAX
UNITS
ns
t1
A1-A15, AEN, nBE0-nBE1 Valid and nADS Low Setup to
nRD, nWR Active
A1-A15, AEN, nBE0-nBE1 Hold After nRD, nWR Inactive
(Assuming nADS Tied Low)
nRD Low to Valid Data
nRD High to Data Floating
Data Setup to nWR Inactive
Data Hold After nWR Inactive
t2
20
ns
t3
t4
t5
t5A
40
30
ns
ns
ns
ns
30
5
FIGURE 14 - ASYNCHRONOUS CYCLE - USING NADS
PARAMETER
MIN
25
TYP
MAX
UNITS
ns
t1
A1-A15, AEN, nBE0-nBE1 Valid and nADS Low Setup to nRD,
nWR Active
nRD Low to Valid Data
nRD High to Data Floating
Data Setup to nWR Inactive
Data Hold After nWR Inactive
A1-A15, AEN, nBE0-nBE1 Setup to nADS Rising
A1-A15, AEN, nBE0-nBE1 Hold after nADS Rising
t3
t4
t5
t5A
t8
t9
40
30
ns
ns
ns
ns
ns
ns
30
5
10
15
t8
t9
t5
t3
t4
t1
t5A
A1-A15, AEN, nBE0-nBE1 valid
D0-D15 valid
ADDRESS
nADS
READ DATA
nRD, nWR
WRITE DATA
A1-A15, AEN, nBE0-nBE1 valid
ADDRESS
t3
t4
nADS
READ DATA
t5
t5A
D0-D15 valid
WRITE DATA
t1
nRD, nWR
t2
相關(guān)PDF資料
PDF描述
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