MPC8280 datasheet(854/1386 Pages) FREESCALE

854 / 1386 page

Universal Serial Bus Controller

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

27-38

Freescale Semiconductor

10. Write 0x1818_0100 to DPRAM+0x524 to set up the RFCR, TFCR, and MRBLR fields of the

endpoint 2 parameter RAM.

11. Write 0x0008_0028 to DPRAM+0x528 to set up the RBPTR and TBPTR fields of the endpoint 2

parameter RAM.

12. Clear the TSTATE field of the endpoint 2 parameter RAM.

13. Write 0xB800_0040 to DPRAM+0x20 to set up the TrBD[Status and Control, Data Length] fields

of the host endpoint.

14. Write DPRAM+0x100 to DPRAM+0x24 to set up the TrBD[Buffer Pointer] field of the host

endpoint.

15. Write 0x8085 to DPRAM+0x28 to set up the TrBD token fields of the host endpoint.

16. Write 0xBC80_0003 to DPRAM+0x28 to set up the TxBD[Status and Control, Data Length] fields

of the function endpoint.

17. Write DPRAM+0x210 to DPRAM+0x2C to set up the TxBD[Buffer Pointer] field of the function

endpoint.

18. Write 0xABCD_1234 to DPRAM+0x210 to set up the function endpoint Tx data pattern.

19. Write 0x0030 to USEP1 for the host: non-isochronous transfer, multi-packet, transaction-level

interface.

20. Write 0x1100 to USEP2 for the function: interrupt transfer, one packet only.

21. Write 0x06 to USMOD for full-speed 12 Mbps signaling, local loopback configuration (test and

host modes set), and disable the USB.

22. Write 0x05 to the USAD for slave address 5.

23. Set USMOD[EN] to enable the USB controller.

24. Write 0x81 to the USCOM to start filling the Tx FIFO with endpoint 2 data to be ready for

transmission when an IN token is received.

25. Write 0x80 to the USCOM to start transmitting the IN token.

The expected results are as follows:

•

TrBD[Status and Control] of the host endpoint should contain 0x3800.

•

TrBD[Data Length] of the host endpoint should contain 0x0005.

•

TxBD[Status and Control] of endpoint 2 should contain 0x3C80.

•

TxBD[Data Length] of endpoint 2 should contain 0x0003.

•

The receive buffer of the host endpoint should contain 0xABCD_122B, 0x42xx_xxxx.

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