36.7.48 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. This can only occur under following
condition: The LPMRESP field in the LPMCNTRL register is set to 0x3, the LPMXMT
field is set to 0x1 and there was data pending in the USB module’s TX 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. This can only occur under following condition: The LPMRESP field in
the LPMCNTRL register is set to 0x3, the LPMXMT field is set to 0x1 and there
was data pending in the USB module’s TX FIFOs.
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. This can only occur under following condition: The LPMRESP field in
the LPMCNTRL register is set to 0x3 and the LPMXMT field is set to 0x0.
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. This can only occur under the following condition: The LPMRESP
field in the LPMCNTRL register is set to 0x1.
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