PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 134

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

LLBP…
Loop Code Register 2 (Read/Write)
Value after RESET: 00
LCR2
LDC7…LDC0… Line Loopback Deactuate Code
Loop Code Register 3 (Read/Write)
Value after RESET: 00
LCR3
LAC7…LAC0… Line Loopback Actuate Code
Semiconductor Group
7
7
LDC7
LAC7
Invert PRBS
LCR1.XPRBS=1:
0…
1…
Line Loopback Pattern
LCR1.XPRBS=0
0…
1…
LCR1.XPRBS=1 or LCR1.EPRM = 1
0…
1…
If enabled by bit FMR3.XLD the LLB deactuate code will automatically
repeat until the LLB generator is stopped. Transmit data is overwritten
by the LLB code. LDC0 is transmittted last. For correct operations bit
LCR1.XPRBS has to cleared.
If enabled by bit FMR3.XLU the LLB actuate code will automatically
repeat until the LLB generator is stopped. Transmit data is overwritten
by the LLB code. LAC0 is transmittted last. For correct operations bit
LCR1.XPRBS has to cleared.
H
H
The generated PRBS is transmitted not inverted.
The PRBS is transmitted inverted.
Fixed line loopback code : 001 or 00001.
Enable user programmable line loopback code via register
LCR2/3.
2
2
15
20
-1
-1
134
Operational Description E1
0
0
LDC0
LAC0
PEB 22554
(x3C)
(x3D)
09.98