H8SX1663 datasheet(821/1158 Pages) RENESAS

821 / 1158 page

Section 16 USB Function Module (USB)

Rev.1.00 Jun. 07, 2006 Page 769 of 1102

REJ09B0294-0100

Bit

Bit Name

Initial

Value

R/W

Description

EP1 RDFN

Undefined

EP1 Read Complete

Write 1 to this bit after one packet of data has been

read from the endpoint 1 FIFO buffer. The endpoint 1

receive FIFO buffer has a dual-buffer configuration.

Writing 1 to this bit initializes the FIFO that was read,

enabling the next packet to be received.

EP2 PKTE

Undefined

EP2 Packet Enable

After one packet of data has been written to the

endpoint 2 transmit FIFO buffer, the transmit data is

fixed by writing 1 to this bit.



Undefined



Reserved

The write value should always be 0.

EP0s RDFN Undefined

EP0s Read Complete

Write 1 to this bit after data for the EP0s command

FIFO has been read. Writing 1 to this bit enables

transfer of data in the following data stage. A NACK

handshake is returned in response to transfer

requests from the host in the data stage until 1 is

written to this bit.

EP0o RDFN Undefined

EP0o Read Complete

Writing 1 to this bit after one packet of data has been

read from the endpoint 0 transmit FIFO buffer

initializes the FIFO buffer, enabling the next packet to

be received.

EP0i PKTE

Undefined

EP0i Packet Enable

After one packet of data has been written to the

endpoint 0 transmit FIFO buffer, the transmit data is

fixed by writing 1 to this bit.

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