LAN91C100-FD SMSC [SMSC Corporation], LAN91C100-FD Datasheet - Page 48

• Manufacturer Part Number: LAN91C100-FD
• Description: FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
• Manufacturer: SMSC [SMSC Corporation]

FEAST Fast Ethernet Controller with Full Duplex Capability
TXEMPTY INTR
Write Acknowledge Reg. with
TXEMPTY Bit Set
Read TXEMPTY & TX INTR
TXEMPTY = 1
TXEMPTY = 0
TXEMPTY = X
&
&
&
TXINT = 0
TXINT = 0
TXINT = 1
(Everything went through
(Waiting for Completion)
(Transmission Failed)
successfully)
Read Pkt. # Register & Save
Write Address Pointer
Register
Read Status Word from RAM
Update Statistics
Update Variables
Issue "Release" Command
Acknowledge TXINTR
Re-Enable TXENA
Restore Packet Number
Return to ISR
Figure 5.6 - TXEMPTY INTR (Assumes Auto release Option Selected)
Rev. 10/14/2002
Page 48
SMSC DS – LAN91C100FD Rev. D
PRELIMINARY