TFRA08C13-DB AGERE [Agere Systems], TFRA08C13-DB Datasheet - Page 131
TFRA08C13-DB
Manufacturer Part Number
TFRA08C13-DB
Description
TFRA08C13 OCTAL T1/E1 Framer
Manufacturer
AGERE [Agere Systems]
Datasheet
1.TFRA08C13-DB.pdf
(188 pages)
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Preliminary Data Sheet
October 2000
Lucent Technologies Inc.
Lucent Technologies Inc.
Framer Register Architecture
Facility Errored Event Register (FRM_SR3)
A bit set to 1 indicates the receive framer has recently received the given errored event.
Table 72. Facility Errored Event Register-1 (FRM_SR3) (Y03)
Bit
0
1
2
3
4
5
6
7
LCRCATMX
Symbol
REBIT
SLIPO
SLIPU
CRCE
ECE
FBE
LFV
Line Format Violation. A 1 indicates the receive framer detected a bipolar line coding or
excessive zeros violation.
Frame-Bit Errored. A 1 indicates the receive framer detected a frame-bit or frame align-
ment pattern error.
CRC Errored. A 1 indicates the receive framer detected CRC errors.
Excessive CRC Errors. A 1 indicates the receive framer detected an excessive CRC
errored condition. This bit is only valid in the ESF and CEPT with CRC-4 modes; other-
wise, it is 0.
Received E Bit = 0. A 1 indicates the receive framer detected an E bit = 0 in either frame
13 or 15 of the time slot 0 of CRC-4 multiframe. This bit is 0 in the DS1 modes.
Lack of CRC-4 Multiframe Alignment Timer Expire Indication. A 1 indicates that
either the 100 ms or the 400 ms CRC-4 interworking timer expired. Active only immedi-
ately after establishment of the initial basic frame alignment. This bit is 0 in the DS1
modes.
Receive Elastic Store Slip: Buffer Overflow. A 1 indicates the receive elastic store per-
formed a control slip due to an elastic buffer overflow condition.
Receive Elastic Store Slip: Buffer Underflow. A 1 indicates the receive elastic store
performed a control slip due to an elastic buffer underflow condition.
(continued)
Description
TFRA08C13 OCTAL T1/E1 Framer
131
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