PEF24901HV22XT Lantiq, PEF24901HV22XT Datasheet - Page 13

• Manufacturer Part Number: PEF24901HV22XT
• Manufacturer: Lantiq

Specifications of PEF24901HV22XT

• Control Interface: HDLC
• Lead Free Status / Rohs Status: Compliant

1
The Quad ISDN 4B3T Echocanceller Digital Front End (DFE-T) is the digital part of an
optimized two-chip solution featuring 4x ISDN basic rate access at 144 kbit/s. The PEF
24901 is designed to provide in conjunction with the Quad ISDN Echocanceller Analog
Front End (PEF 24902 V2.1) full duplex data transmission at the U-reference point
according to FTZ Guideline 1TR 220, ETSI TS 102 080 and ITU-T G.961 standards.
The DFE-T 2nd generation has been completely reengineered to guarantee the
availability of the well proved DFE-T/AFE solution over the year 2000. PEF 24901 V2.2
is downwards pin compatible and functionally equivalent to the DFE-T V1.x. Thus, line
card manufacturers can make use of the most advanced process technology without the
need to change their current design (besides the changeover to 3.3 V power supply).
No software changes are required if the DFE-T V2.2 is deployed in existing DFE-T V1.x
solutions. Some new features are provided such as enhanced monitoring and test
functions. The data rate is programmable from 1 Mbit/s to 4 Mbit/s.
Figure 1
The output and input pins are throughout 5 V TTL compatible although the PEF 24901
is processed in advanced 3.3 V CMOS technology. A power down state with very low
power consumption is featured.
The PEF 24901 comes in a P-MQFP-64 package.
Data Sheet
4x U
Introduction
DFE-T/ AFE 2nd Generation Chip Set
Hybrid
Hybrid
Hybrid
Hybrid
AFE V2.1
PEF 24902
15.36MHz
14
DFE-T V2.2
Relay Driver/
Power Controller
PEF 24901
IOM
Introduction
PEF 24901
chipset
2002-09-30
®
-2
DFE-T