tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 419

• 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
18 SPE Mapper Functional Description
Table 547. Path Overhead Byte Access
Even or odd parity can be inserted into the first bit of the second byte of the POAC outgoing frame. Parity is
selected with register bit, SPE_RPOAC_OEPINS
18.14.14 Insertion of AIS-P
The SPE mapper automatically generates AIS path (AIS-P) when:
Criteria for PATH_AIS_GENERATE =
((SPE_RLOP AND (SPE_PAIS_LOPINH)) OR
(SPE_RAIS AND (SPE_PAIS_AISINH)) OR
(SPE_RUNEQ AND (SPE_PAIS_UNEQINH)) OR
(SPE_RPLM AND (SPE_PAIS_PLMINH)) OR
(SPE_RTIM AND (SPE_PAIS_TIMINH)) OR
(SPE_SFB3 AND (SPE_PAIS_SFB3INH)) OR
(SPE_SDB3 AND (SPE_PAIS_SDB3INH)) OR
(SPE_RSY52LOS AND (SPE_AIS_LOSSY52INH)) OR
(SPE_RV1LOS AND (SPE_AIS_LOSV1INH)) OR
(SPE_RSPELOS AND (SPE_AIS_LOSSPEINH)) OR
(SPE_RJ0J1V1LOS AND (SPE_AIS_LOSJ0J1V1INH)) OR
(SPE_RDS3LOC AND (SPE_AIS_LOCDS3INH)) OR
(SPE_RC52LOC AND (SPE_AIS_LOC52INH)) OR
(SPE_RLSLOC AND (SPE_AIS_LOCINH)) OR
SPE_PAISINS OR
RAUTO_AIS (signal from TMUX))
The SPE mapper starts/stops generating AIS-P within 125 µs of the detection/absence of a failure condition.
AIS-P consists of writing all ones into the H1, H2, and H3 bytes and into the entire payload.
Agere Systems Inc.
The pointer interpreter declares the receive AIS state (SPE_RAIS in
pointer state (SPE_RLOP
AIS is requested by signals from the TMUX interface.
AIS is forced by setting bit SPE_PAISINS
Any one of the loss-of-clock or loss-of-sync bits are active and their corresponding inhibit bits are inactive.
Any of bits SPE_RUNEQ, SPE_RPLM, and SPE_RTIM (all are in
inhibit signals are inactive.
(Table
148)) and the appropriate inhibit signals are inactive.
(Table
(Table 149 on page138
149).
POH Parity
(continued)
C2
G1
H4
K3
N1
F2
F3
J1
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Table
Table 148 on page137
).
148) are active, and the appropriate
TMXF28155/51 Super Mapper
) or receive loss of
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