37.7.48 USB LPM Interrupts Status Register
Symbol | Description | Symbol | Description | Symbol | Description |
---|---|---|---|---|---|
R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
K | Write to clear | S | Software settable bit | — | — |
Name: | LPMINTR |
Offset: | 0x1364 |
Reset: | 0x0000 |
Property: | PAC Write-Protection |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
LPMERR | LPMRES | LPMNC | LPMACK | LPMNY | LPMST | ||||
Access | R | R | R | R | R | R | |||
Reset | 0 | 0 | 0 | 0 | 0 | 0 |
Bit 5 – LPMERR LPM Error Interrupt Flag bit
Device Mode only bit. Unimplemented in Host mode.
Value | Description |
---|---|
0 | No error condition |
1 | An LPM transaction was received that had a LINKSTATE field that is not supported. The response will be a STALL. |
Bit 4 – LPMRES LPM Resume Interrupt Flag bit
This bit is mutually exclusive from the RESUME bit in the Power register.
Value | Description |
---|---|
0 | No Resume condition |
1 | The USB module has resumed (for any reason) |
Bit 3 – LPMNC LPM Not Complete Interrupt Flag bit
When in Device mode:
1
= The USB module received an LPM transaction and responded with
a NYET due to data pending in the RX FIFOs.
0
= No NC interrupt condition
When in Host mode:
1
= An LPM transaction is transmitted and has failed to complete.
The transaction will have failed because a timeout occurred or there were bit
errors in the response for three attempts.
0 = No NC interrupt condition
Bit 2 – LPMACK LPM ACK Interrupt Flag bit
When in Device mode:
1
= An LPM transaction was received and the USB Module responded
with an ACK.
0
= No ACK interrupt condition
When in Host mode:
1
= The LPM transaction is transmitted and the device responds
with an ACK
0
= No ACK interrupt condition
Bit 1 – LPMNY LPM NYET Interrupt Flag bit
When in Device mode:
1
= An LPM transaction is received and the USB Module responded
with a NYET.
0
= No NYET interrupt flag
When in Host mode:
1
= An LPM transaction is transmitted and the device responded
with an NYET
0
= No NYET interrupt flag
Bit 0 – LPMST LPM Stall Interrupt Flag bit
When in Device mode:
1
= An LPM transaction was received and the USB Module responded
with a STALL.
0
= No Stall condition
When in Host mode:
1
= An LPM transaction was transmitted and the device responded
with a STALL
0
= No Stall condition