Texas Instruments TMS320TCI648x Outputretryenc, Outputretried, Outputretrystp, Outputerrorenc

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SRIO Registers

Table 147. Port Error and Status CSR n (SPn_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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