IDT82P2288 Integrated Device Technology, Inc., IDT82P2288 Datasheet - Page 143

• Manufacturer Part Number: IDT82P2288
• Description: 8 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2288
T1/J1 Maintenance Function Control 2 (031H, 131H, 231H, 331H, 431H, 531H, 631H, 731H)
BPV_INS:
EXZ_DEF:
code rule, the EXZ error is defined as more than 7 consecutive zeros in the data stream.
rule, the EXZ error is defined as more than 7 consecutive zeros in the data stream.
EXZ_ERR[1:0]:
CNT_MD:
ters when there is a transition from ‘0’ to ‘1’ on the CNT_TRF bit.
every one second automatically.
CNT_TRF:
EXZ counter.
Programming Information
Bit Name
Default
Bit No.
Type
A transition from ‘0’ to ‘1’ on this bit generates a single Bipolar Violation (BPV) Error to be inserted to the data stream to be transmitted.
This bit must be cleared and set again for the next BPV error insertion.
This bit selects the Excessive Zero (EXZ) Error criterion.
= 0: The ANSI is selected. In AMI line code rule, the EXZ error is defined as more than 15 consecutive zeros in the data stream. In B8ZS line
= 1: The FCC is selected. In AMI line code rule, the EXZ error is defined as more than 80 consecutive zeros in the data stream. In B8ZS line code
These bits must be set to ‘01’ to enable the Excessive Zero (EXZ) Error event to be counted in an internal 16-bit EXZ counter.
= 0: The Manual Report mode is selected. The internal 16-bit EXZ counter transfers its content to the EXZ Error Counter L-Byte & H-Byte regis-
= 1: The Auto Report mode is selected. The internal 16-bit EXZ counter transfers its content to the EXZ Error Counter L-Byte & H-Byte registers
This bit is valid when the CNT_MD bit is ‘0’.
A transition from ‘0’ to ‘1’ on this bit updates the content in the EXZ Error Counter L-Byte & H-Byte registers with the value in the internal 16-bit
This bit must be cleared and set again for the next updating.
Reserved
7
BPV_INS
R/W
6
0
Reserved
5
EXZ_DEF
R/W
4
0
132
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
EXZ_ERR1
R/W
3
0
EXZ_ERR0
R/W
2
0
CNT_MD
R/W
1
0
March 22, 2004
CNT_TRF
R/W
0
0