LAN91C100FD_0601 Datasheet, PDF (48/78 Pages) SMSC Corporation – FEAST Fast Ethernet Controller with Full Duplex Capability

FEAST Fast Ethernet Controller with Full Duplex Capability
TXEMPTY INTR
Write Acknowledge Reg. with
TXEMPTY Bit Set
Read TXEMPTY & TX INTR
TXEMPTY = 0
&
TXINT = 0
(Waiting for Completion)
TXEMPTY = X
&
TXINT = 1
(Transmission Failed)
TXEMPTY = 1
&
TXINT = 0
(Everything went through
successfully)
Read Pkt. # Register & Save
Write Address Pointer
Register
Read Status Word from RAM
Update Statistics
Issue "Release" Command
Update Variables
Acknowledge TXINTR
Re-Enable TXENA
Restore Packet Number
Return to ISR
Figure 5.6 - TXEMPTY INTR (Assumes Auto release Option Selected)
Rev. 01-20-06
Page 48
DATASHEET
SMSC DS – LAN91C100FD Rev. D