TMXF28155 Supermapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Data Sheet
June 2002
12 28-Channel Framer Registers (continued)
Table 397. FRM_PMLR4, Performance Monitor Link Register 4 (COR) (continued)
Address* Bit
Name
Function
Reset
Default
0x8LP83
8
FRM_RAI
Remote Alarm Indication. A 1 indicates the receive framer
0
detected a remote (yellow) alarm or detected an RAI indication
on the TDM bus from the mapper.
D4: Bit 2 of all time slots is a 0 for one frame. (ANSI T1.403,
Section 9.1.)
DDS: Bit 6 of time slot 24 is a 0 for 12 frames.
ESF: The user should use register 0x8LP85, bit 4,
ESF_FDL_RAI/Yellow Alarm.
CEPT Basic Frame: RAI is activated when bit 3 of the NOTFAS
frame is 1 RAC consecutive times. RAI is deactivated when bit
3 of the NOTFAS frame is a 0 RDC consecutive times. RAI acti-
vation count (RAC) and RAI deactivation count (RDC) are provi-
sionable in Table 325 on page 251.
Option 0: Bit 3 of the NOTFAS frame is a 1 one consecutive
time. RAI is inactive when bit 3 is set to a 0.
Option 1: RAI is set on three consecutive ones and deactivated
on three consecutive zeros.
Option 2: Bit 3 of the NOTFAS frame is a 1 four consecutive
times. RAI is inactive when bit 3 is set to a 1 in less than two
consecutive occasions. (O.162, Section 2.1.4.)
Option 3: RAI is set on five consecutive ones and deactivated
on five consecutive zeros. (ETS 300.417-1-1.)
CEPT CRC-4 Multiframe: Reception of 1 bit A with a content
of 1. (G.965, Section 16.1.2.)
7
6
FRM_SA600X1E Sa6 = 00x1 Event. This bit indicates detection of an Sa6 = 00x1
event. The Sa6 code is detected synchronously to the CRC-4
multiframe and is not counted during loss of CRC-4 multiframe
alignment. This detection is not qualified by Sa5 = 1, unlike bits
6 and 8 of Table 406 on page 291.
0
0
FRM_SA6001XE Sa6 = 001x Event. This bit indicates detection of an Sa6 = 001x
event. The Sa6 code is detected synchronously to the CRC-4
multiframe and is not counted during loss of CRC-4 multiframe
alignment. This detection is not qualified by Sa5 = 1, unlike bits
7 and 8 of Table 406.
* See Table 393 on page 279 for values of L and P.
284
Agere Systems Inc.
ETC [ ETC ]
