Serial RapidIO (SRIO) User's Guide

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5.89 Port Error Rate CSR n (SP n_ERR_RATE)
SRIO Registers
Each of the four ports is supported by a register of this type (see Table 172 ). SP n_ERR_RATE is shown
in Figure 152 and described in Table 173 .
Table 172. SP n_ERR_RATE Registers and the Associated Ports
Register Address Offset Associated Port
SP0_ERR_RATE 2068h Port 0
SP1_ERR_RATE 20A8h Port 1
SP2_ERR_RATE 20E8h Port 2
SP3_ERR_RATE 2128h Port 3
Figure 152. Port Error Rate CSR n (SP n_ERR_RATE)
31 24 23 18 17 16
ERROR_RATE_
ERROR_RATE_BIAS Reserved
RECOVERY
R/W-FFh R-00h R/W-00
15 8 7 0
PEAK_ERROR_RATE ERROR_RATE_COUNTER
R/W-00h R/W-00h
LEGEND: R/W = Read/Write; R = Read only; - n = Value after reset
Table 173. Port Error Rate CSR n (SP n_ERR_RATE) Field Descriptions
Bit Field Value Description
31–24 ERROR_RATE_BIAS These bits provide the error rate bias value.
00h Do not decrement the error rate counter
01h Decrement every 1ms (nominal)
03h Decrement every 10ms (nominal)
07h Decrement every 100ms
0Fh Decrement every 1s (nominal)
1Fh Decrement every 10s (nominal)
3Fh Decrement every 100s (nominal)
7Fh Decrement every 1000s (nominal)
FFh Decrement every 10000s (nominal)
Other Reserved
23–18 Reserved 00h These read-only bits return 0s when read.
17–16 ERROR_RATE_RECOVERY These bits limit the incrementing of the error rate counter above the
failed threshold trigger.
00b Only count 2 errors above
01b Only count 4 errors above
10b Only count 16 errors above
11b Do not limit incrementing the error rate count
15–8 PEAK_ERROR_RATE 00h–FFh This field contains the peak value attained by the error rate counter.
7–0 ERROR_RATE_COUNTER 00h–FFh These bits maintain a count of the number of transmission errors that
have occurred. If this value equals the value contained in the error rate
threshold trigger register, then an error will be reported.
Serial RapidIO (SRIO)228 SPRUE13A – September 2006
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