Datasheet

32.8.3.4 EndPoint Status n
Name: EPSTATUSn
Offset: 0x106 + (n x 0x20)
Reset: 0x00
Property: PAC Write-Protection
Bit 7 6 5 4 3 2 1 0
BK1RDY BK0RDY STALLRQ CURBK DTGLIN DTGLOUT
Access
R R R R R R
Reset 0 0 2 0 0 0
Bit 7 – BK1RDY Bank 1 is ready
For Control/OUT direction Endpoints, the bank is empty.
Writing a one to the bit EPSTATUSCLR.BK1RDY will clear this bit.
Writing a one to the bit EPSTATUSSET.BK1RDY will set this bit.
Value Description
0
The bank number 1 is not ready : For IN direction Endpoints, the bank is not yet filled in.
1
The bank number 1 is ready: For IN direction Endpoints, the bank is filled in. For
Control/OUT direction Endpoints, the bank is full.
Bit 6 – BK0RDY Bank 0 is ready
Writing a one to the bit EPSTATUSCLR.BK0RDY will clear this bit.
Writing a one to the bit EPSTATUSSET.BK0RDY will set this bit.
Value Description
0
The bank number 0 is not ready : For IN direction Endpoints, the bank is not yet filled in. For
Control/OUT direction Endpoints, the bank is empty.
1
The bank number 0 is ready: For IN direction Endpoints, the bank is filled in. For
Control/OUT direction Endpoints, the bank is full.
Bit 4 – STALLRQ STALL bank x request
Writing a zero to the bit EPSTATUSCLR.STALLRQ will clear this bit.
Writing a one to the bit EPSTATUSSET.STALLRQ will set this bit.
This bit is cleared by hardware when receiving a SETUP packet.
Value Description
0
Disable STALLRQx feature.
1
Enable STALLRQx feature: a STALL handshake will be sent to the host in regards to bank x.
Bit 2 – CURBK Current Bank
Writing a zero to the bit EPSTATUSCLR.CURBK will clear this bit.
Writing a one to the bit EPSTATUSSET.CURBK will set this bit.
Value Description
0
The bank0 is the bank that will be used in the next single/multi USB packet.
SAM D21 Family
USB – Universal Serial Bus
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 843