SMC Networks SMC91C95 Manual de usuario Pagina 76

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FIGURE 13 - TX INTR
(Assumes Auto Release Option Selected)
Write Into Packet Number
Register
TX Status
OK?
TX INTR
Save Pkt Number Register
Read TXDONE Pkt # from
FIFO Ports Reg.
Immediately Issue "Release"
Command
Acknowledge TXINTR
Read TX INT Again
Return to ISR
NoYes
Read Status Word from RAM
Update Statistics
Re-Enable TXENA
Update Variables
TX INT = 0?
Restore Packet Number
Yes
No
Write Address Pointer Register
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