XRT72L58
EIGHT CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
á
PRELIMINARY
REV. P1.1.2
127
This Read-Only register, along with the Frame Parity
Errors - One-Second Accumulator Register - MSB
(Address = 0x70) contains a 16-bit representation of
the number of Frame Parity Errors that have been de-
tected 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.
N
OTES
:
1. For DS3 applications, the “Frame-Parity” Errors -
One Second Accumulator” register contains the
number of “P-bit” errors that have been detected in
the last one-second sampling period.
2. For E3, ITU-T G.751 applications, the “Frame-Par-
ity” Error - One Second Accumulator” register con-
tains the number of BIP-4 errors that have been
detected in the last one-second sampling period.
3. For E3, ITU-T G.832 applications, the “Frame-Par-
ity Error - One Second Accumulator” register con-
tains the number of BIP-8 errors that have been
detected in the last one-second sampling period.
2.4.8.17
mulator Register - MSB
One-Second Frame CP-Bit Error Accu-
This Read-Only register, along with the Frame CP-Bit
Error - One-Second Accumulator Register - LSB (Ad-
dress = 0x73) contains a 16-bit representation of the
number of CP Bit Errors tjhat 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 expres-
sion.
N
OTE
:
This register is only active if the Channel has been
configured to operate in the DS3, C-bit Parity framing for-
mat.
2.4.8.18
One-Second Frame CP-Bit Error Accu-
mulator Register - LSB
This Read-Only register, along with the Frame CP-Bit
Error - One-Second Accumulator Register - MSB (Ad-
dress = 0x72) contains a 16-bit representation of the
number of CP Bit Errors tjhat 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 expres-
sion.
N
OTE
:
This register is only active if the Channel has been
configured to operate in the DS3, C-bit Parity framing for-
mat.
FRAME PARITY ERRORS - ONE-SECOND ACCUMULATOR REGISTER - LSB (ADDRESS = 0X71)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Frame Parity Error Count - Low Byte
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0
FRAME CP-BIT ERRORS - ONE-SECOND ACCUMULATOR REGISTER - MSB (ADDRESS = 0X72)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
CP Bit Error Count - High Byte
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0
FRAME PARITY ERRORS - ONE-SECOND ACCUMULATOR REGISTER - LSB (ADDRESS = 0X73)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
CP Bit Error Count - Low Byte
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0