SMC Networks SMC91C95 Bedienungsanleitung PDF herunterladen (Seite 74)

74

FIGURE 11 - INTERRUPT GENERATION FOR TRANSMIT, RECEIVE, MMU

T

X

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O

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N

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M

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CPU ADDRESS

CSMA ADDRESS

RX PACKET

NUMBER

RX FIFO

PACKET NUMBER

PACKET NUMBER

REGISTER

PACK # OUT

M.S. BIT ONLY

'EMPTY'

'NOT EMPTY'

TX DONE

PACKET NUMBER

'NOT EMPTY'

INTERRUPT

STATUS REGISTER

RCV

INT

TX EMPTY

INT

TX

INT

ALLOC

INT

TWO

OPTIONS

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