XRT7250 Datasheet, PDF (127/463 Pages) Exar Corporation – DS3/E3 FRAMER IC

XRT7250 DS3/E3 FRAMER IC
REV. 1.1.1
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ONE-SECOND ERROR STATUS REGISTER (ADDRESS = 0X6D)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
BIT 1
Errored
Second
RO
0
BIT 0
Severely
Errored
Second
RO
0
Bit 1 - Errored Second
This bit field indicates whether or not an error has oc-
curred within the last One-Second accumulation in-
terval. This bit-field will be set to “1” if at least one er-
ror has occurred during the last One-Second accu-
mulation interval. Conversely, this bit-field will be set
to "0" if no errors has occurred during the last one-
second accumulation interval.
Bit 0 - Severely Errored Second
This bit-field indicates whether or not the error rate in
the last one-second interval was greater than 1 in
103. A "0" indicates that the error rate did not exceed
1 in 103 in the last One-Second interval.
2.3.8.13 One-Second Line Code Violation Accu-
mulator Register - MSB
LCV - ONE-SECOND ACCUMULATOR REGISTER - MSB (ADDRESS = 0X6E)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LCV - One-Second Count - High Byte
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0
This Read-Only register, along with the LCV - One-
Second Accumulator Register - LSB (Address =
0x6F) contains a 16-bit representation of the number
of LCV (Line Code Violation) Events that have been
detected by the Receive DS3/E3 Framer block, within
the last one-second sampling period. This register
contains the MSB (or Upper-Byte) value of this 16 bit
expression.
2.3.8.14 One-Second Line Code Violation Accu-
mulator Register - LSB
LCV - ONE-SECOND ACCUMULATOR REGISTER - LSB (ADDRESS = 0X6F)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
LCV - One-Second Count - Low Byte
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
BIT 1
RO
0
BIT 0
RO
0
This Read-Only register, along with the LCV - One-
Second Accumulator Register - MSB (Address =
0x6E) contains a 16-bit representation of the number
of LCV (Line Code Violation) Events that have been
detected by the Receive DS3/E3 Framer block, within
the last One-Second sampling period. This register
contains the LSB (or Lower-Byte) value of this 16 bit
expression.
2.3.8.15 One-Second Frame Parity Error Accu-
mulator Register - MSB
108