PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 75

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

5.2
The filterless AFE
by connecting to an External Adaptive Hybrid that automatically matches any line
impedance and efficiently removes echo noise.
5.3
The Analog Block performs DAC on data received from the digital transceiver for
transmission, and provides reconstruction filtering (through a Post Filter) and signal
conditioning (through a Power Controller). The reception signal is amplified by the
Automatic Gain Controller (AGC) and passed through an Analog Channel Equalizer
(ACE). After anti-alias filtering (PREFI) the signal is converted to digital form. A control
interface accesses registers. A digitally controlled crystal oscillator (DCXO) provides
clock generation and timing recovery.
Figure 9
reduce noise coupling.
1)
Preliminary Data Sheet
It may be necessary to add additional external components to ensure best performance under any line
conditions. Refer to the reference design guidelines.
illustrates the major Analog Blocks. All analog signals are fully differential to
Filterless AFE
Functional Block Diagram – Analog Block
1)
has no transmission and reception filters. Echo noise is eliminated
75
Functional Description – Analog Block
Rev. 1.1, 2005-01-30
VDSL6100i
PEF 22827