lan91c100fd Standard Microsystems Corp., lan91c100fd Datasheet - Page 42

• Manufacturer Part Number: lan91c100fd
• Description: Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
• Manufacturer: Standard Microsystems Corp.

SMSC DS – LAN91C100FD REV. B
(Waiting for Completion)
FIGURE 9 - TXEMPTY INTR (ASSUMES AUTO RELEASE OPTION SELECTED)
TXEMPTY = 0
TXINT = 0
&
Write Acknowledge Reg. with
Read Status Word from RAM
Read Pkt. # Register & Save
Read TXEMPTY & TX INTR
Issue "Release" Command
Restore Packet Number
Write Address Pointer
Acknowledge TXINTR
(Transmission Failed)
Re-Enable TXENA
TXEMPTY Bit Set
Update Statistics
TXEMPTY INTR
Return to ISR
TXEMPTY = X
Register
TXINT = 1
Page 42
&
(Everything went through
TXEMPTY = 1
successfully)
TXINT = 0
Update Variables
&
Rev. 03-28-07