Texas Instruments TMS320C645X - Manual (Page 186)

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5.84 Port Error and Status CSR n (SPn_ERR_STAT)
SRIO Registers
Each of the four ports is supported by a register of this type.
Figure 140. Port Error and Status CSR n (SPn_ERR_STAT)
31-27 26 25 24 23-21 20 19 18 17 16
Reserved OUTP OUTP OUTP Reserved OUTP OUTP OUTP OUTP OUTP
UT_P UT_FL UT_D UT_R UT_R UT_R UT_E UT_E
KT_D D_EN EGRD ETRY ETRIE ETRY RROR RROR
ROP C _ENC _ENC D _STP _ENC _STP
R-0x00 RC- RC- RC- R-0x00 RC- R- R- RC- R-
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LEGEND: R = Read only; -n = value after reset
15-11 10 9 8 7-5 4 3 2 1 0
Reserved INPUT INPUT INPUT Reserved PORT Reserv PORT PORT PORT
_RET _ERR _ERR _WRIT ed _ERR _OK _UNIN
RY_S OR_E OR_S E_PN OR ITIALI
TP NC TP D ZED
R-0x00 R- RC- R- R-0x00 RC- R- RC- R- R-
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01
LEGEND: R = Read only; -n = value after reset
Table 114. Port Error and Status CSR n (SPn_ERR_STAT) Field Descriptions
Bit Field Value Description
31-27 Reserved Reserved
26 OUTPUT_PKT_D Output port has discarded a packet. (switch devices only)
ROP
25 OUTPUT_FLD_E Output port has encountered a failed condition, meaning that the failed port error threshold has
NC been reached in the Port n Error Rate Threshold Register. Once set, it remains set until written with
a logic 1 to clear.
24 OUTPUT_DEGR Output port has encountered a degraded condition, meaning that the degraded port error threshold
D_ENC has been reached in the Port n Error Rate Threshold Register. Once set, it remains set until written
with a logic 1 to clear.
23-21 Reserved Reserved
20 OUTPUT_RETRY Output port has encountered a retry condition. This bit is set when bit 18 is set. Once set, remains
_ENC set until written with a logic 1 to clear.
19 OUTPUT_RETRI Output port has received a packet-retry control symbol and can not make forward progress. This bit
ED is set when bit 18 is set and is cleared when a packet-accepted or a packet-not-accepted control
symbol is received (read-only).
18 OUTPUT_RETRY Output port has received a packet-retry control symbol and is in the "output retry-stopped" state
_STP (read-only).
17 OUTPUT_ERRO Output port has encountered (and possibly recovered from) a transmission error. This bit is set
R_ENC when bit 16 is set. Once set, remains set until written with a logic 1 to clear
16 OUTPUT_ERRO Output is in the "output error-stopped" state (read-only).
R_STP
15-11 Reserved Reserved
10 INPUT_RETRY_ Input port is in the "input retry-stopped" state (read-only).
STP
9 INPUT_ERROR_ Input port has encountered (and possibly recovered from) a transmission error. This bit is set when
ENC bit 8 is set. Once set, remains set until written with a logic 1 to clear
8 INPUT_ERROR_ Input port is in the "input error-stopped" state (read-only).
STP
7-5 Reserved Reserved
4 PORT_WRITE_P Port has encountered a condition which required it to initiate a Maintenance Port-write operation
ND This bit is only valid if the device is capable of issuing a maintenance port-write transaction. Once
set remains set until written with a logic 1 to clear.
3 Reserved Reserved
2 PORT_ERROR Input or output port has encountered an error from which hardware was unable to recover. Once
set, remains set until written with a logic 1 to clear.
186 Serial RapidIO (SRIO) SPRU976 – March 2006
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