STE100A ST Microelectronics, Inc., STE100A Datasheet - Page 17

• Manufacturer Part Number: STE100A
• Description: PCI 10/100 Ethernet Controller with Integrated PHY (3.3v)
• Manufacturer: ST Microelectronics, Inc.

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