Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet

42023E–SAM–07/2013

UPSTAn, n in [0..7]

Read-Only

0x0530 + (n * 0x04)

0x00000000

For non-control pipe, this field indicates the number of the current bank.

This field may be updated 1 clock cycle after the RWALL bit changes, so the user should not poll this field for an interrupt.

This field indicates the number of busy bank.

For OUT pipe, this field indicates the number of busy bank(s), filled by the user, ready for OUT transfer. When all banks are 

busy, this triggers an PnINT interrupt if UPCONn.NBUSYBKE is one.

For IN pipe, this field indicates the number of busy bank(s) filled by IN transaction from the Device. When all banks are free, this 

triggers an PnINT interrupt if UPCONn.NBUSYBKE is one.

 

This bit is cleared when the RAMACERIC bit is written to one.

This bit is set when a RAM access underflow error occurs during IN data stage.

31

30

29

28

27

26

25

24

-

-

-

-

-

-

-

-

23

22

21

20

19

18

17

16

-

-

-

-

-

-

-

-

15

14

13

12

11

10

9

8

-

CURRBK

NBUSYBK

-

RAMACERI

DTSEQ

7

6

5

4

3

2

1

0

-

RXSTALLDI/

CRCERRI

ERRORFI

NAKEDI

PERRI

TXSTPI

TXOUTI

RXINI

0

0

Bank0

0

1

Bank1

0

0

All banks are free.

0

1

1 busy bank

1

0

2 busy banks

1

1

reserved