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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 699 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
[10]
NYETIF
NYET Sent
0 = The space available in the RAM is sufficient to accommodate the next on
coming data packet.
1 = The space available in the RAM is not sufficient to accommodate the next on
coming data packet.
Note:
Write 1 to clear this bit to 0.
[9]
STALLIF
USB STALL Sent
0 = The last USB packet could be accepted or provided because the endpoint was
stalled, and was acknowledged with a STALL.
1 = The last USB packet could not be accepted or provided because the endpoint
was stalled, and was acknowledged with a STALL.
Note:
Write 1 to clear this bit to 0.
[8]
NAKIF
USB NAK Sent
0 = The last USB IN packet could be provided, and was acknowledged with an
ACK.
1 = The last USB IN packet could not be provided, and was acknowledged with a
NAK.
Note:
Write 1 to clear this bit to 0.
[7]
PINGIF
PING Token Interrupt
0 = A Data PING token has not been received from the host.
1 = A Data PING token has been received from the host.
Note:
Write 1 to clear this bit to 0.
[6]
INTKIF
Data IN Token Interrupt
0 = Not Data IN token has been received from the host.
1 = A Data IN token has been received from the host.
Note:
Write 1 to clear this bit to 0.
[5]
OUTTKIF
Data OUT Token Interrupt
0 = A Data OUT token has not been received from the host.
1 = A Data OUT token has been received from the host. This bit also set by PING
token (in high-speed only).
Note:
Write 1 to clear this bit to 0.
[4]
RXPKIF
Data Packet Received Interrupt
0 = No data packet is received from the host by the endpoint.
1 = A data packet is received from the host by the endpoint.
Note:
Write 1 to clear this bit to 0.
[3]
TXPKIF
Data Packet Transmitted Interrupt
0 = Not a data packet is transmitted from the endpoint to the host.
1 = A data packet is transmitted from the endpoint to the host.
Note:
Write 1 to clear this bit to 0.
[2]
SHORTTXIF
Short Packet Transferred Interrupt
0 = The length of the last packet was not less than the Maximum Packet Size
(EPMPS).
1 = The length of the last packet was less than the Maximum Packet Size
(EPMPS).
Note:
Write 1 to clear this bit to 0.