PM5366-PI datasheet(169/267 Pages) PMC

169 / 267 page

PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

157

Table 18

- PMON Counter Saturation Limits (E1 mode)

Counter

BER

FER

4.0 X 10-3

CRCE

cannot saturate

FEBE

cannot saturate

Table 19

- PMON Counter Saturation Limits (T1 mode)

Counter

Format

BER

FER

1.6 x 10-3

ESF

6.4 x 10-2

CRCE

1.28 x 10-1

ESF

cannot saturate

Below these 50% points, the relationship between the BER and the counter

event count (averaged over many one second samples) is essentially linear.

Above the 50% point, the relationship between BER and the average counter

event count is highly non-linear due to the likelihood of counter saturation. The

following figures show this relationship for various counters and framing formats.

These graphs can be used to determine the BER, given the average event

count. In general, if the BER is above 10-3, the average counter event count

cannot be used to determine the BER without considering the statistical effect of

occasional counter saturation.

Figure 13 illustrates the expected count values for a range of Bit Error Ratios in

E1 mode.

PM5366-PI Datasheet(PDF) 169 Page - PMC-Sierra, Inc

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