37.7.48 USB LPM Interrupts Status Register

Table 37-50. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: LPMINTR
Offset: 0x1364
Reset: 0x0000
Property: PAC Write-Protection

Bit 76543210 
   LPMERRLPMRESLPMNCLPMACKLPMNYLPMST 
Access RRRRRR 
Reset 000000 

Bit 5 – LPMERR LPM Error Interrupt Flag bit

Device Mode only bit. Unimplemented in Host mode.

ValueDescription
0No error condition
1An 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.

ValueDescription
0No Resume condition
1The 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