peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 252

• Manufacturer Part Number: peb2256
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

LDC(1:0)
LAC(1:0)
FLLB
LLBP
Data Sheet
Length Deactivate (Down) Code
These bits defines the length of the LLB deactivate code which is
programmable in register LCR2.
00 = Length: 5 bit
01 = Length: 6 bit, 2 bit, 3 bit
10 = Length: 7 bit
11 = Length: 8 bit, 2 bit, 4bit
Length Activate (Up) Code
These bits defines the length of the LLB activate code which is
programmable in register LCR3.
00 = Length: 5 bit
01 = Length: 6 bit, 2 bit, 3 bit
10 = Length: 7 bit
11 = Length: 8 bit, 2 bit, 4 bit
Framed Line Loop-Back/Invert PRBS
Depending on bit LCR1.XPRBS this bit enables different functions:
LCR1.XPRBS = 0:
0 =
1 =
Invert PRBS
LCR1.XPRBS = 1:
0 =
1 =
Line Loop-Back Pattern
LCR1.XPRBS = 0
0 =
1 =
LCR1.XPRBS = 1 or LCR1.EPRM = 1
0 =
1 =
The line loop-back code is transmitted including framing bits.
LLB code overwrites the FS/DL-bits.
The line loop-back code is transmitted unframed. LLB code
does not overwrite the FS/DL-bits.
The generated PRBS is transmitted not inverted.
The PRBS is transmitted inverted.
Fixed line loop-back code according to ANSI T1. 403.
Enable user-programmable line loop-back code by register
LCR2/3.
2
2
15
20
-1
-1
252
FALC56 V1.2
E1 Registers
PEB 2256
2002-08-27