tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 433

• 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
19 VT/TU Mapper Functional Description
* This state diagram is based on the ETS 417-1-1 pointer interpretation state diagram (Figure B.1). Transitions of eight invalid pointers from the
Agere Systems Inc.
INC, DEC, and NDF states into the LOP state have been added.
The pointer interpreter will transition into the LOP-V state based on the following conditions:
The pointer interpreter will transition out of the LOP-V state based on the following conditions:
The pointer interpreter will transition into the AIS-V state based on the following conditions:
The pointer interpreter will transition out of the AIS-V state based on the following conditions:
— Continuous NDF. If NDF (1001, 0001, 1101, 1011, 1000) is received for the number of consecutive super-
— Invalid pointer values. If the number of consecutive superframes programmed in register bits
— Following three consecutive superframes with all ones in the V1 and V2 bytes the pointer interpreter will tran-
— Following three new consecutive, consistent, and valid pointers the pointer interpreter will transition from the
— The pointer interpreter does not transition from the LOP-V state into the NDF state.
— Following three consecutive superframes with all ones in the V1 and V2 bytes AIS-V will be declared.
— Following three new consecutive, consistent, and valid pointers the pointer interpreter will transition from the
— Following the number of consecutive invalid pointers programmed in bits VT_INV_NTIME[3:0], the pointer in-
— If NDF is enabled on the incoming V1 and V2 bytes, the pointer interpreter will transition from the AIS-V state
*
frames programmed in bits VT_NDF_NTIME[3:0]
VT_INV_NTIME[3:0]
or decrement, then LOP-V will be declared. The SS bits contribute to an invalid pointer indication.
sition from the LOP-V state into the AIS-V state.
LOP-V state into the NORM state.
AIS-V state into the NORM state.
terpreter will transition from the AIS-V state into the LOP-V state.
into the NDF state.
8 INVALID POINTERS*
FROM ALL STATES
(Table
Figure 40. Pointer Interpretation State Diagram
LOP
INC
183) are received with a pointer that is not a normal value, NDF, AIS-V, increment,
INCREMENT
INDICATION
3 NEW POINTERS
POINTERS
8 INVALID
POINTERS
3 ANY
8 INVALID POINTERS
3 NEW POINTERS
3 NEW POINTERS
(Table
8 NDF ENABLE
NDF ENABLE
(continued)
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
NORM
183), then LOP-V will be declared.
POINTERS
3 ANY POINTERS
3 ANY
3 NEW POINTERS
NDF ENABLE
FROM ALL STATES
3 AIS INDICATIONS
ENABLE
NDF
TMXF28155/51 Super Mapper
DECREMENT
INDICATION
DEC
NDF
AIS
ENABLE
ENABLE
NDF
NDF
5-9007(F)
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