SMSC LAN91C111 Manual do Utilizador descarregar pdf (Página 111)

10/100 Non-PCI Ethernet Single Chip MAC + PHY

Datasheet

SMSC LAN91C111 REV C 111 Revision 1.91 (08-18-08)

DATASHEET

Figure 14.2 Asynchronous Cycle - Using nADS

PARAMETER MIN TYP MAX UNITS

t1 A1-A15, AEN, nBE[3:0] Valid to nRD, nWR Active 2 ns

t3 nRD Low to Valid Data 15 ns

t4 nRD High to Data Invalid 2 15 ns

t5 Data Setup to nWR Inactive 10 ns

t5A Data Hold After nWR Inactive 5 ns

t6 nRD Strobe Width 15 ns

t8 A1-A15, AEN, nBE[3:0] Setup to nADS Rising 8 ns

t9 A1-A15, AEN, nBE[3:0] Hold after nADS Rising 5 ns

t5A

t5t1

t4t3

valid

0ns 50ns 100ns 150ns 200ns 250

ddr,AEN,nBE[1:0]

nADS

Read Data

nRD,nWR

Write Data

Asynchronous Cycle -- Using nADS

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 127 128

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SMSC LAN91C111 Manual do Utilizador Página 111