PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 373

• Manufacturer Part Number: PEF2256EV22NP
• Manufacturer: Lantiq

Specifications of PEF2256EV22NP

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Framer Mode Register 2 (Read/Write)
Value after reset: 00
FMR2
AFRS
MCSP
SSP
Data Sheet
AFRS
7
Automatic Force resynchronization
0 =
1 =
Multiple Candidates Synchronization Procedure
Select Synchronization/Resynchronization Procedure
Together with bit FMR2.SSP the synchronization mode of the receive
framer is defined:
MCSP/SSP:
00 = F12/F72 format:
Specified number of errors in both FT framing and FS framing lead to
loss of sync (FRS0.LFA is set). In the case of FS-bit framing errors,
bit FRS0.LMFA is set additionally. A complete new synchronization
procedure is initiated to regain pulseframe alignment and then
multiframe alignment.
F24:
normal operation: synchronization is achieved only on verification the
framing pattern.
01 = F12/F72:
Specified number of errors in FT framing has the same effect as
above. Specified number of errors in FS framing only initiates a new
search for multiframe alignment without influencing pulseframe
synchronous state (FRS0.LMFA is set).
F24:
Synchronous state is reached when three consecutive multiframe
pattern are correctly found independent of the occurrence of CRC6
errors.
10 = F12/F24:
A one enables a synchronization mode which is able to choose
multiple framing pattern candidates step by step. I.e. if in synchronous
state the CRC error counter indicates that the synchronization might
MCSP
H
Default operation, no automatic search in case of multiple
framing candidates.
Search for next framing candidate automatically, if multiple
candidates are present and the current candidate is incorrect.
SSP
DAIS
373
SAIS
PLB
AXRA
Rev. 1.1, 2005-06-13
T1/J1 Registers
PEF 2256 H/E
EXZE
0
FALC
(1E)
®
56