STE10A Datasheet, PDF (17/82 Pages) STMicroelectronics – PCI 10/100 Ethernet controller with integrated PHY (3.3V)

STE10/100A
Functional description
3.3
3.3.1
Transmit scheme and transmit early interrupt
Transmit scheme
Figure 9. Transmit scheme
Initialize descriptor
Place data in host memory
Set own bit to 1
Write Tx demand poll command
Own = 0
Exit
STE10/100
checks descriptor
Own = 1
Transfer data to Tx FIFO
Deferring OR data less
than Tx threshold?
Back-off
Transmit data
across line
Collision
occured?
Write descriptor
Generate interrupt
PC00354
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