tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 296

• 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 422. FRM_ARLR2, Arbiter Link Register 2 (R/W)
* See
296
Address*
0x8LPF1
Table 417
for values of L and P .
Bit
15
14
FRM_ESF_CRC_EN
FRM_FAST
Name
(continued)
CRC Framing Enable.
DS1 Modes: ESF CRC framing algorithm enable:
0 = ESF CRC framing disabled.
1 = ESF CRC framing enabled. (Enables inclusion of CRC
in the frame search algorithm.)
CEPT Modes: CRC-4 Multiframe:
0 = Multiframe reframe disabled.
1 = Multiframe reframe enabled. (Enables the inclusion of
the following criteria to the CEPT loss of multiframe crite-
ria. Three consecutive multiframe alignment pattern bit
errors will cause a search for a new multiframe alignment.
Basic frame alignment is not lost.)
Fast Frame Mode.
DS1 Modes:
0 = Disable quick frame recovery.
1 = Enable quick frame recovery as follows:
D4 and J-D4: 36 fewer frame bits are checked.
SLC-96: Eighteen fewer F
search for F
DDS: No change.
CEPT Modes:
0 = Disable quick frame recovery.
1 = This bit enables the (n + 2) framing research algorithm
as defined in the note in Recommendation G.706 section
4.1.2. When an FAS is found in frame n, frame (n + 1) is
checked to ensure that it is a non-FAS frame and frame
(n + 2) is checked for FAS. Failure to meet either of these
conditions results in a new search in frame (n + 2).
T
framing.
Function
T
bits are checked during the
Agere Systems Inc.
May 2001
Default
Reset
0
0