DOEPTSIZ15

nRF54LM20A | nRF54LM20B Datasheet

Address offset: 0xCF0

Device OUT Endpoint Transfer Size Register 15

This register contains the Transfer Size for the OUT Endpoint 15 of the Device controller.

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID C C B B B B B B B B B B A A A A A A A A A A A A A A A A A A A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

XFERSIZE

Transfer Size (XferSize)

Indicates the transfer size in bytes for the endpoint. The core interrupts the application only after it has exhausted the transfer size amount of data. The transfer size can be Set to the maximum packet size of the endpoint, to be interrupted at the end of each packet. The core decrements this field every time a packet is read from the RxFIFO and written to the external memory.

B

RW

PKTCNT

Packet Count (PktCnt)

This field is decremented to zero after a packet is written into the RxFIFO.

C

R

RXDPID

RxDPID

Applies to isochronous OUT endpoints only. This is the data PID received in the last packet for this endpoint. SETUP Packet Count (SUPCnt) Applies to control OUT Endpoints only. This field specifies the number of back-to-back SETUP data packets the endpoint can receive.

DATA0

0

DATA0

DATA2PACKET1

1

DATA2 or 1 packet

DATA1PACKET2

2

DATA1 or 2 packets

MDATAPACKET3

3

MDATA or 3 packets