XRT79L71_1 Datasheet, PDF (191/434 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC -

REV. 1.0.0
XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
BIT NUMBER
NAME
7-0
PMON_Framing Bit/Byte
Error_Count_Upper
Byte[7:0]
TYPE
RUR
DESCRIPTION
Performance Monitor - Framing Bit/Byte Error Count - Upper
Byte:
These RESET-upon-READ bits, along with that within the PMON
Framing Bit/Byte Error Count Register - LSB combine to reflect
the cumulative number of Framing bit (or byte) errors that have
been detected by the Receive DS3/E3 Framer block, since the
last read of this register. This register contains the Most Signifi-
cant byte of this 16-bit expression.
NOTES:
1. For DS3 applications, this register will increment for
each F or M bit error detected.
2. For E3, ITU-T G.751 applications, this register will
increment for each FAS error detected.
3. For E3, ITU-T G.832 applications, this register will
increment for each FA1 or FA2 byte error detected.
PMON Framing Bit/Byte Error Count Register - LSB (Address = 0x1153)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
PMON_Framing_Bit/Byte_Error_Count_Lower_Byte[7:0]
RUR
RUR
RUR
RUR
RUR
RUR
0
0
0
0
0
0
BIT 1
RUR
0
BIT 0
RUR
0
BIT NUMBER
NAME
7-0
PMON_Framing Bit/Byte
Error_Count_Lower
Byte[7:0]
TYPE
RUR
DESCRIPTION
Performance Monitor - Framing Bit/Byte Error Count - Lower
Byte:
These RESET-upon-READ bits, along with that within the PMON
Framing Bit/Byte Error Count Register - MSB combine to reflect
the cumulative number of Framing bit (or byte) errors that have
been detected by the Receive DS3/E3 Framer block, since the
last read of this register. This register contains the Least Signifi-
cant byte of this 16-bit expression.
NOTES:
1. For DS3 applications, this register will increment for
each F or M bit error detected.
2. For E3, ITU-T G.751 applications, this register will
increment for each FAS error detected.
3. For E3, ITU-T G.832 applications, this register will
increment for each FA1 or FA2 byte error detected.
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