tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 297

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

Preliminary Data Sheet
May 2001
12 28-Channel Framer Registers
Table 422. FRM_ARLR2, Arbiter Link Register 2 (R/W) (continued)
* See
Agere Systems Inc.
Address*
0x8LPF1
Table 417
13:12
for values of L and P .
Bit
11
FRM_FBE_MODE
FRM_OPT[1:0]
Name
(continued)
Frame Options.
DS1 Mode:
00 = The frame aligner will not frame up until all mimics
are gone.
01 = Time-out algorithm is enabled. A counter is started
when, for the first time, one of the 193-bit positions con-
tains a sequence long enough to declare frame but is pre-
vented from doing so by the presence of a mimic. The
provisionable counter sets a time limit for mimics to go
away. If there are still mimics, a candidate bit position that
has met the minimum framing requirements is chosen and
frame alignment is made to that position. See
FRM_TO[7:0]
Others reserved.
CEPT Mode:
00 = No change.
01 = Enables an extra NOTFAS frame check. This can
prevent frame alignment on PRBS patterns which contain
a pseudoframing pattern. The CEPT framing sequence
now becomes:
Find FAS (n).
Verify NOTFAS frame (n + 1).
Verify second FAS in frame (n + 2).
Verify second NOTFAS frame (n + 3).
Others reserved.
DDS FBE Mode.
0 = Allows two FBEs to be detected in a frame in DDS
mode. One FBE for the frame bit (F
FBE for the time slot 24 frame alignment signal.
1 = Only 1 FBE is detected in a frame in DDS mode.
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
(Table
305).
Function
TMXF28155/51 Super Mapper
T
and F
S
) and one
Default
Reset
0
0
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