DM9102AT datasheet(60/77 Pages) ETC

60 / 77 page

DM9102A

Single Chip Fast Ethernet NIC controller

Final

Version: DM9102A-DS-F03

August 28, 2000

Sample Frame Programming Guide:

1. Enter the sample frame access mode

Let CR6<28:25>=0011

2.Reset the TX/RX FIFO, write pointer to offset 0

Write 38h to CR13<8:3>

Write 01h to CR14 (reset)

Write 00h to CR14 (clear)

3. Write the sample frame 0-3 data to RX FIFO

Write 35h to CR13<8:3>

Write xxxxxxxxh to CR14 (Frame1~3 first byte)

Write xxxxxxxxh to CR14 (Frame1~3 second byte)

Repeat write until all frame data written to RX FIFO

4. RESET RX FIFO, write pointer to offset 100h

Write 38h to CR13<8:3>

Write 40h to CR14 (reset)

Write 00h to CR14 (clear)

5. Write the sample frame 4-7 to RX FIFO

Write 35h to CR13<8:3>

Write xxxxxxxxh to CR14 (Frame4~7 first byte)

Write xxxxxxxxh to CR14 (Frame4~7 second byte)

Repeat write until all frame data written to RX FIFO

6. Write the sample frame 0-3 mask to TX FIFO

Write 32h to CR13<8:3>

Write xxxxxxxxh to CR14 (Frame0~3 first mask byte)

Write xxxxxxxxh to CR14 (Frame0~3 second mask byte)

Repeat write until all frame mask which is written to TX

FIFO

7. RESET TX FIFO, write pointer to offset 100h

Write 38h to CR13<8:3>

Write 20h to CR14 (reset)

Write 00h to CR14 (clear)

8. Write the sample frame 4-7 mask to TX FIFO

Write 32h to CR13<8:3>

Write xxxxxxxxh to CR14 (Frame4~7 first mask byte)

Write xxxxxxxxh to CR14 (Frame4~7 second mask byte)

Repeat write until all frame mask which is written to TX

FIFO

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