tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 280

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
12 28-Channel Framer Registers
Table 385. FRM_PMLR4, Performance Monitor Link Register 4 (COR) (continued)
* See
280
Address*
0x8LP83
Table 381
for values of L and P .
Bit
5
4
3
2
FRM_TS0MFABE Time Slot 0 Multiframe Alignment Signal Bit Error. A 1
FRM_LTS0MFA
FRM_CRCTX
FRM_SES
Name
CRC-4 Multiframe Alignment Timer Expired. A 1 indicates
that either the 100 ms or the 400 ms interworking timer expired.
It is only active immediately after basic frame alignment is found
in CEPT CRC-4 modes. This signal is set when the error
occurs, and is cleared when it is read if there is not another
error during the read.
Loss of Time Slot 0 CRC-4 Multiframe Alignment. A 1 indi-
cates the absence of CRC-4 multiframe alignment. This bit is
set when basic frame alignment has been found and multiframe
alignment is being searched for, or when multiframe alignment
is lost but basic frame alignment remains good, or when multi-
frame alignment is lost.
Note: This is a stored version of the status. It is cleared after
CRC-4 multiframe alignment is assumed lost when there are
three consecutive errors in the CRC-4 multiframe alignment bits
(bit 0 of not-FAS frames 1, 3, 5, 7, 9, and 11). Loss of CRC-4
multiframe alignment may optionally cause a research for CRC-
4 multiframe alignment without affecting the current basic frame
alignment.
CEPT with CRC-4 only. In all other modes, this bit is a 0.
indicates that the receive framer detected an error in the CRC-4
multiframe alignment signal. A 0 indicates no errors. Bit 0 of
NOTFAS frames (1, 3, 5, 7, 9, and 11).
Severely Errored Second (G.826 Annex B). A 1 indicates the
receive framer detected a severely errored second. The events
that can cause an errored second are provisionable for DS1
links in
errored second threshold is provisionable; DS1-SF links in
Table 314 on page249
page 249
(continued)
one good multiframe bit is seen.
Table 317
and CEPT links in
and for CEPT links in
, DS1-ESF links in
Function
Table
319.
Table
Table 316 on
320. The severely
Agere Systems Inc.
May 2001
Default
Reset
0
0
0
0