Serial RapidIO (SRIO) User's Guide

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SRIO Registers
Table 147. Port Error and Status CSR n (SP n_ERR_STAT) Field Descriptions (continued)
Bit Field Value Description
23–21 Reserved 0 These read-only bits return 0s when read.
20 OUTPUT_RETRY_ENC Output retry condition encountered. Once set, the OUTPUT_RETRY_ENC bit
remains set until software writes a 1 to it.
0 The output port has not encountered a retry condition.
1 The output port has encountered a retry condition. This bit is set when bit 18
is set.
19 OUTPUT_RETRIED Output retried. OUTPUT_RETRIED is a read-only bit.
0 The output port has not received a packet-retry control symbol.
1 The output port has received a packet-retry control symbol and cannot make
forward progress. This bit is set when bit 18 is set and is cleared when a
packet-accepted or packet-not-accepted control symbol is received.
18 OUTPUT_RETRY_STP Output retry-stopped state. OUTPUT_RETRY_STP is a read-only bit.
0 The output port has not received a packet-retry control symbol and/or is not
in the "output retry-stopped" state.
1 The output port has received a packet-retry control symbol and is in the
"output retry-stopped" state.
17 OUTPUT_ERROR_ENC Output transmission error encountered. Once set, the
OUTPUT_ERROR_ENC bit remains set until software writes a 1 to it.
0 The output port has not encountered a transmission error.
1 The output port has encountered (and possibly recovered from) a
transmission error. This bit is set when bit 16 is set.
16 OUTPUT_ERROR_STP Output error-stopped. OUTPUT_ERROR_STP is a read-only bit.
0 The output port is not in the "output error-stopped" state.
1 The output port is in the "output error-stopped" state.
15–11 Reserved 0 These read-only bits return 0s when read.
10 INPUT_RETRY_STP Input retry-stopped state. INPUT_RETRY_STP is a read-only bit.
0 The input port is not in the "input retry-stopped" state.
1 The input port is in the "input retry-stopped" state.
9 INPUT_ERROR_ENC Input port transmission error encountered. Once set, the
INPUT_ERROR_ENC bit remains set until software writes a 1 to it.
0 The input port has not encountered a transmission error.
1 The input port has encountered (and possibly recovered from) a transmission
error. This bit is set when bit 8 is set.
8 INPUT_ERROR_STP Input error-stopped state. INPUT_ERROR_STP is a read-only bit.
0 The input port is not in the "input error-stopped" state.
1 The input port is in the "input error-stopped" state.
7–5 Reserved 0 These read-only bits return 0s when read.
4 PORT_WRITE_PND Port-write pending. This bit is only valid if the device is capable of issuing a
maintenance port-write transaction. Once set, the PORT_WRITE_PND bit
remains set until software writes a 1 to it.
0 The port has not encountered a condition which required it to initiate a
Maintenance Port-write operation.
1 The port has encountered a condition which required it to initiate a
Maintenance Port-write operation.
3 Reserved 0 This read-only bit returns 0 when read.
2 PORT_ERROR Port unrecoverable error. Once set, the PORT_ERROR bit remains set until
software writes a 1 to it.
0 The input or output port has not encountered an error from which hardware
was unable to recover.
1 The input or output port has encountered an error from which hardware was
unable to recover.
204 Serial RapidIO (SRIO) SPRUE13A – September 2006
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