PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 49
PEB3265
Manufacturer Part Number
PEB3265
Description
(PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB3265.pdf
(383 pages)
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Preliminary
3.4
SLICOFI-2x uses either an IOM-2 or a PCM digital interface. In receive direction,
SLICOFI-2x converts PCM data from the network and outputs a differential analog signal
(ACP and ACN) to the SLIC, that amplifies the signal and applies it to the subscriber line.
In transmit direction, the transversal (IT) and longitudinal (IL) currents on the line are
sensed by the SLIC and fed to the SLICOFI-2x. A capacitor separates the transversal
line current into DC (IT) and AC (ITAC) components. As ITAC is the sensed transversal
(also called metallic) current on the line, it includes both the receive and transmit
components. SLICOFI-2x separates the receive and transmit components digitally, via
a transhybrid circuit.
SLICs and SLICOFI-2x:
Figure 22
The signal flow within the SLICOFI-2x for one voice channel is shown in
the following schematic circuitry. With the exception of a few analog filter functions,
signal processing is performed digitally in the SLICOFI-2x .
Data Sheet
AC Transmission Characteristics
RING
TIP
RING
TIP
Signal Paths - AC Transmission
Channel A
Channel B
SLIC
Figure 22
SLIC
ACN
DCN
ACP
DCP
ACN
DCN
ACP
DCP
IT
IL
IT
IL
shows the signal paths for AC transmission between the
R
R
Transmit path
ILA
ILB
Receive path
C
C
VCM
ITA
R
ITB
R
R
R
IT1A
IT2A
IT1B
IT2B
C
C
VCMITB
VCMITA
49
SLICOFI-2x
ILB
VCMITA
ILA
ITACA
ITA
DCPB
VCM
ITACB
ITB
VCMITB
DCNB
ACNA
DCPA
DCNA
ACPA
ACPB
ACNB
Functional Description
(data upstream)
(data downstream)
PCM out
Transmit
Interface
PCM in
PCM or
Receive
IOM-2
ezm140373.emf
Figure 23
2000-07-14
DuSLIC
by
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