PEB24901HV1.2 Lantiq, PEB24901HV1.2 Datasheet - Page 6

• Manufacturer Part Number: PEB24901HV1.2
• Manufacturer: Lantiq

Specifications of PEB24901HV1.2

• Lead Free Status / Rohs Status: Supplier Unconfirmed

4 Channel ISDN Echocancellation Digital Front End
(Quad IEC DFE-T)
Preliminary Data Sheet
1
The PEB 24901 4 Channel ISDN Echocancellation Digital Front End (Quad IEC DFE-T)
is the digital part of an optimized ISDN 4B3T-U-Interface Line card chip set. It features
4 independent digital signal processors providing, in conjunction with the PEB 24902
ISDN Quad Analog Front End (Quad IEC AFE) , full duplex data transmission at the U
reference point according to FTZ Guideline 1TR 220, ETSI ETR80 and CCITT I.430
standards.
The PEB 24901/24902 chip set is based on the PEB 20901/20902 IEC-T ISDN U-
transceiver chip set.
1.1
• Full duplex transmission and reception of the U
• Adaptive echo cancellation.
• Adaptive equalization.
• Automatic polarity adaption.
• Clock recovery (frame and bit synchronization).
• Transposition of ternary to binary data and vice versa (coding, decoding, scrambling,
• Built in wake-up unit for activation from power-down state.
• Activation and deactivation procedure according to CCITT I.430 and to FTZ Guideline
• Optimized for working in conjunction with telecom ICs as the IDEC
Semiconductor Group
FTZ Guideline 1 TR 220 of the Deutsche Bundespost Telekom (DBPT).
descrambling, phase adaption).
1 TR 210 of the DBPT.
EPIC
– 144 kbit/s user bit rate over standard local telephone loops
– 1 kbit/s maintenance channel for transmission of data loop back commands and
– 4B3T ternary block code (subscriber line symbol rate 120 kbaud)
– Monitoring of transmission errors
– Subscriber loop length without repeater:
detected transmission errors
Introduction
Basic system Functions
up to 4.2 km on 0.4 mm wire
up to 8.0 km on 0.6 mm wire
®
(PEB 2055) and ELIC
®
(PEB 20550) via IOM-2 interface.
5
k0
interface signals according to the
®
PEB 24901
(PEB 2075),
CMOS IC
02.95
k0