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SRIO Registers
Table 73. LSU Interrupt Condition Status Register (LSU_ICSR) Field Descriptions (continued)
Bit
Field
Value
Description
19
ICS19
0
LSU3 interrupt condition not detected.
1
LSU3 interrupt condition detected. Transaction was not sent due to unsupported transaction type or
invalid field encoding.
18
ICS18
0
LSU3 interrupt condition not detected.
1
LSU3 interrupt condition detected. Transaction was not sent due to Xoff condition.
17
ICS17
0
LSU3 interrupt condition not detected.
1
LSU3 interrupt condition detected. Non-posted transaction received ERROR response, or error in
response payload.
16
ICS16
0
LSU3 interrupt condition not detected.
1
LSU3 interrupt condition detected. Transaction complete, No errors (posted/non-posted). Enable for
this interrupt is ultimately controlled by the Interrupt Req bit of LSU3_REG4. This allows
enabling/disabling on a per request basis. For optimum LSU performance, interrupt pacing should
not be used on the LSU interrupts.
15
ICS15
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Packet not sent due to unavailable outbound credit at given
priority.
14
ICS14
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Retry Doorbell response received or Atomic test-and-swap was
not allowed (semaphore in use).
13
ICS13
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Transaction was not sent due to DMA data transfer error.
12
ICS12
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Transaction timeout occurred.
11
ICS11
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Transaction was not sent due to unsupported transaction type or
invalid field encoding.
10
ICS10
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Transaction was not sent due to Xoff condition.
9
ICS9
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Non-posted transaction received ERROR response, or error in
response payload.
8
ICS8
0
LSU2 interrupt condition not detected.
1
LSU2 interrupt condition detected. Transaction complete, No errors (posted/non-posted). Enable for
this interrupt is ultimately controlled by the Interrupt Req bit of LSU2_REG4. This allows
enabling/disabling on a per request basis. For optimum LSU performance, interrupt pacing should
not be used on the LSU interrupts.
7
ICS7
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Packet not sent due to unavailable outbound credit at given
priority.
6
ICS6
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Retry Doorbell response received or Atomic test-and-swap was
not allowed (semaphore in use).
5
ICS5
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Transaction was not sent due to DMA data transfer error.
4
ICS4
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Transaction timeout occurred.
3
ICS3
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Transaction was not sent due to unsupported transaction type or
invalid field encoding.
2
ICS2
0
LSU1 interrupt condition not detected.
1
LSU1 interrupt condition detected. Transaction was not sent due to Xoff condition.
SPRUE13A – September 2006
Serial RapidIO (SRIO)
139
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