PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 111

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

Semiconductor Group
Framer Mode Register 0 (Read/Write)
Value after RESET: 00
FMR0
XC1... XC0…
RC1... RC0…
EXTD…
ALM…
7
XC1
Transmit Code
Serial code transmitter is independent to the receiver.
00... NRZ (optical interface)
01... CMI (1T2B + HDB3), (optical interface)
10... AMI (ternary or digital dual rail interface)
11... HDB3 Code (ternary or digital dual rail interface)
Receive Code
Serial code receiver is independent to the transmitter.
00... NRZ (optical interface)
01... CMI (1T2B+HDB3), (optical interface)
10... AMI (ternary or digital dual rail interface)
11... HDB3 Code (ternary or digital dual rail interface)
Extended HDB3 Error Detection
Selects error detection mode.
0…
1…
Alarm Mode
Selects the AIS alarm detection mode.
0 ... The AIS alarm will be detected according to ETS300233.
1 ... The AIS alarm will be detected according to ITU-T G.775
XC0
H
Only double violations are detected.
Extended code violation detection: 0000 strings are detected
additionally. Thereafter, incrementation of Code Violation
Counter CVC is first done after receiving an additional four
zeros.
Detection: An AIS alarm will be detected if the incoming data
stream contains less than 3 zeros within a period of 512 bits
and a Loss of Frame Alignment is indicated.
Recovery: The alarm will be cleared if 3 or more zeros within
512 bits will be detected or the FAS word is found.
Detection: An AIS alarm will be detected if the incoming data
stream contains for two consecutive doubleframe periods
RC1
RC0
111
EXTD
ALM
Operational Description E1
FRS
0
SIM
PEB 22554
(x1C)
09.98