PEF2256 INFINEON [Infineon Technologies AG], PEF2256 Datasheet - Page 238

• Manufacturer Part Number: PEF2256
• Description: E1/T1/J1 Framer and Line Interface Component for Long- and Short-Haul Applications
• Manufacturer: INFINEON [Infineon Technologies AG]

IBV
Framer Mode Register 0 (Read/Write)
Value after reset: 00
FMR0
XC(1:0)
RC(1:0)
EXZE
User’s Manual
Hardware Description
XC1
7
Transmit Code
Serial line code for the transmitter, independent of 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)
After changing XC(1:0), a transmitter software reset is required
(CMDR.XRES = 1).
Receive Code
Serial line code for the receiver, independent of 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)
After changing RC(1:0), a receiver software reset is required
(CMDR.RRES = 1).
Extended HDB3 Error Detection
Selects error detection mode.
0 =
1 =
Insert bipolar violation
Note:Except for CRC defects, CRC checksum calculation is done
XC0
H
after defect insertion.
Only double violations are detected.
Extended code violation detection: 0000 strings are detected
additionally. Incrementing of the code violation counter CVC is
done after receiving four zeros. Errors are indicated by
FRS1.EXZD = 1.
RC1
RC0
238
EXZE
ALM
FRS
DS1.1, 2003-10-23
PEF 2256 H/E
SIM
E1 Registers
0
FALC
(1C)
®
56