AN983 ETC [List of Unclassifed Manufacturers], AN983 Datasheet - Page 63

• Manufacturer Part Number: AN983
• Description: PCI/miniPCI-to-Ethernet LAN Controller
• Manufacturer: ETC [List of Unclassifed Manufacturers]

AN983B
PCI/miPCI Fast Ethernet Controller with integrated PHY
8.4 RECEIVE SCHEME AND RECEIVE EARLY
INTERRUPT SCHEME
The following figure shows the difference of timing without early interrupt and with early interrupt.
incoming packet
receive FIFO operation
FIFO-to-host memory operation
interrupt
driver read header
higher layer process
driver read the rest data
finish time
receive early interrupt
driver read header(early)
higher layer process(early)
driver read the rest data
finish time
time
handled by driver
handled by AN983B
Fig - 12 Receive data flow (without early interrupt and with early interrupt)
63
Rev. 1.8
ADMtek Inc.
www.admtek.com.tw