LAN91C94 Ver la hoja de datos (PDF) - SMSC -> Microchip

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LAN91C94

ISA/PCMCIA Single-Chip Ethernet Controller with RAM

SMSC -> Microchip 

8 BIT MODE

((nEN16=1) (16BIT=0))

16 BIT MODE

otherwise

Table 1 - Bus Transactions in ISA Mode

A0

nSBHE

D0-7

0

X

even byte

1

X

odd byte

0

0

even byte

D8-15

-

-

odd byte

0

1

even byte

-

1

0

-

odd byte

1

1

invalid cycle

8 BIT MODE

Table 2 - Bus Transactions in PCMCIA Mode

A0 nCE1

nCE2

D0-7

0

0

X

even byte

D8-15

-

((IOis8=1) +

(nEN16=1).(16BIT=0))

1

0

X

X

1

X

16 BIT MODE

0

0

0

odd byte

NO CYCLE

even byte

-

odd byte

otherwise

0

0

1

1

0

1

X

1

0

X

1

1

even byte

odd byte

-

NO CYCLE

-

odd byte

16BIT: CONFIGURATION REGISTER bit 7

IOis8: CSR register bit 5

nEN16: pin nEN16

15

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