SH7721 datasheet(871/1524 Pages) RENESAS

871 / 1524 page

Section 25

USB Function Controller (USBF)

Rev. 3.00 Jan. 18, 2008 Page 809 of 1458

REJ09B0033-0300

Bit

Bit Name

Initial Value

R/W Description

EP2

EMPTY

EP2 (Bulk-in) FIFO Empty

[Setting conditions]

• When reset

• The FIFO buffer of EP2 has a dual-buffer

configuration, and this bit is set when at least one

of the FIFO buffer is empty.

[Clearing condition]

When both of FIFO buffers are not empty.

Note:

EP2 EMPTY is a status bit, and cannot be

cleared.

SETUP TS

R/W Setup Command Receive Complete

[Setting condition]

When 8-byte data that decodes the command by the

function is normally received from the host to EP0s

and an ACK handshake is returned to the host from

the function.

[Clearing conditions]

• When reset

• When 0 is written to by CPU

EP0o TS

R/W EP0o Receive Complete

[Setting condition]

When data is normally received from the host to EP0o

and an ACK handshake is returned from the function

to the host.

[Clearing conditions]

• When reset

• When 0 is written to by CPU

EP0i TR

R/W EP0i Transfer Request

[Setting condition]

When IN token is issued from the host to EP0i and the

FIFO buffer is empty.

[Clearing conditions]

• When reset

• When 0 is written to by CPU

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