STLC5432 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STLC5432

2Mbit CEPT & PRIMARY RATE CONTROLLER DEVICE

STMicroelectronics 

STLC5432

Figure 13: Synchronization Algorithm

LOF = 1

LOSS OF FRAME

DOUT DELIVERS ”ALL 1s”

FRAME RESEARCH

Ax = 1; Ex = 0

NO

FRAME

ALIGNMENT

RECOVERY

YES

LOF = 0

DOUT IS VALIDATED.

TIMER OUT 400ms STARTS.

MULTIFRAME RESEARCH

Ax = 0; Ex = 0

MULTI FRAME

NO

ALIGNMENT RECOVERY

YES

MFR = 1

FCR 1/2 COUNTER IS

VALIDATED TO COUNT

CRC4 BLOCKS RECEIVED

FALSE

ECR 1/2 COUNTER IS

VALIDATED TO COUNT

E BIT RECEIVED

AT ”0”

YES

915

CRC4 BLOCK

RECEIVED FALSE

NO

FRAME

NO

ALIGNMENT

LOST

YES

34/46

FRAME

NO

ALIGNMENT

LOST

YES

TIME

NO

OUT 400ms

EXPIRED

YES

MFNR = 1

FCR 1/2 COUNTER IS

VALIDATED TO COUNT BITS

OF FRAME ALIGNMENT

SIGNAL RECEIVED

FALSE

FRAME

NO

ALIGNMENT

LOST

YES

D93TL059B

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