XR72L52 Datasheet, PDF (127/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

xr
TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
XRT72L52
REV. 1.0.1
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 Accumulator Register - LSB
LCV - ONE-SECOND ACCUMULATOR REGISTER - LSB (ADDRESS = 0X6F)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LCV - One-Second Count - Low 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 - 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 Accumulator Register - MSB
FRAME PARITY ERRORS - ONE-SECOND ACCUMULATOR REGISTER - MSB (ADDRESS = 0X70)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Frame Parity Error 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 Frame Parity Errors - One-Second Accumulator Register - LSB (Ad-
dress = 0x71) contains a 16-bit representation of the number of Frame Parity Errors 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.
NOTES:
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-Parity Error - One Second Accumulator” register contains 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-Parity Error - One Second Accumulator register contains the number
of BIP-8 errors that have been detected in the last one-second sampling period.
2.3.8.16 One-Second Frame Parity Error Accumulator Register - LSB
FRAME PARITY ERRORS - ONE-SECOND ACCUMULATOR REGISTER - LSB (ADDRESS = 0X71)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Frame Parity Error Count - Low Byte
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0
This Read-Only register, along with the Frame Parity Errors - One-Second Accumulator Register - MSB (Ad-
dress = 0x70) contains a 16-bit representation of the number of Frame Parity Errors 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.
NOTES:
111