DOC7707 datasheet(216/307 Pages) ETC1

216 / 307 page

216

7707F–AVR–11/10

AT90USB82/162

For OUT endpoint, it indicates the number of busy bank(s) filled by OUT transaction from the

host.

00b

All banks are free

01b

1 busy bank

10b

2 busy banks

11b

Reserved.

• 7-3 - Reserved

The value read from these bits is always 0. Do not set these bits.

• 2 - CTRLDIR - Control Direction (Flag, and bit for debug purpose)

Set by hardware after a SETUP packet, and gives the direction of the following packet:

- 1 for IN endpoint

- 0 for OUT endpoint.

Can not be set or cleared by software.

• 1-0 - CURRBK1:0 - Current Bank (all endpoints except Control endpoint) Flag

Set by hardware to indicate the number of the current bank:

00b

Bank0

01b

Bank1

1xb

Reserved.

Can not be set or cleared by software.

• 7 - FIFOCON - FIFO Control Bit

For OUT and SETUP Endpoint:

Set by hardware when a new OUT message is stored in the current bank, at the same time than

RXOUT or RXSTP.

Clear to free the current bank and to switch to the following bank. Setting by software has no

effect.

Bit

432

CTRLDIR

CURRBK1:0

UESTA1X

Read/Wri

Initial

Value

000

Bit

432

FIFOCON

NAKINI

RWAL

NAKOUTI

RXSTPI

RXOUTI

STALLEDI

TXINI

UEINTX

Read/Wri

R/W

Initial

Value

000

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