Rainbow-electronics AT89C5122 Manuel d'utilisateur télécharger pdf (Page 101)

101

AT8xC5122/23

4202E–SCR–06/06

• Endpoint FIFO reset

Before using an endpoint, its FIFO should be reset. This action resets the FIFO pointer

to its original value, resets the byte counter of the endpoint (UBYCTX register), and

resets the data toggle bit (DTGL bit in UEPCONX).

The reset of an endpoint FIFO is performed by setting to 1 and resetting to 0 the corre-

sponding bit in the UEPRST register.

For example, in order to reset the Endpoint number 2 FIFO, write 0000 0100b then 0000

0000b in the UEPRST register.

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 212 213

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Rainbow-electronics AT89C5122 Manuel d'utilisateur Page 101