PEB 4364 T V1.2 Infineon Technologies, PEB 4364 T V1.2 Datasheet - Page 43

• Manufacturer Part Number: PEB 4364 T V1.2
• Description: IC SLIC VOICE ACCESS PDSO-36
• Manufacturer: Infineon Technologies
• Series: DuSLICr

Specifications of PEB 4364 T V1.2

• Function: Dual Channel Subscriber Line Interface Circuit (DuSLIC)
• Interface: IOM-2, PCM
• Number Of Circuits: 2
• Voltage - Supply: 3.3 V ~ 5 V
• Current - Supply: 105mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-PDSO
• Includes: DTMF Generator and Decoder, Line Echo Cancellation (LEC), Teletax (TTX) Generation, Universal Tone Detection (UTD)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEB4364TV1.2XT; SP000007728

Figure 20
2.4.1
The current sense signal (ITAC) is converted to a voltage by an external resistor. This
voltage is first filtered by an anti-aliasing filter (pre-filter) that stops producing noise in the
voice band from signals near the A/D sampling frequency. A/D conversion is done by a
1-bit sigma-delta converter. The digital signal is down-sampled further and routed
through programmable gain and filter stages. The coefficients for the filter and gain
stages can be programmed to meet specific requirements. The processed digital signal
goes through a compander (CMP) that converts the voice data into A-Law or -Law
codes. A time slot assignment unit outputs the voice data to the programmed time slot.
SLICOFI-2x can also operate in 16-bit linear mode for processing uncompressed voice
data. In this case, two time slots are used for one voice channel.
2.4.2
The digital input signal is received via the IOM-2 or PCM Interface. Expansion (EXP),
PCM low-pass filtering, frequency response correction, and gain correction are
performed by the DSP. The digital data stream is up-sampled and converted to a
corresponding analog signal. After smoothing by post-filters in the SLICOFI-2x, the AC
signal is fed to the SLIC, where it is superimposed on the DC signal. The DC signal has
been processed in a separate DC path. A TTX signal, generated digitally within
SLICOFI-2x can also be added.
Preliminary Data Sheet
Transmit Path
Receive Path
Signal Flow in Voice Channel (A)
ACP
ACN
ITAC
SLICOFI-2x
Channel B
TTX
filter
Impedance
matching
+
Channel A
Pre-
filter
Post-
filter
Teletax
generator
D/A
A/D
Impedance
matching
+
43
Amplify
transmit
receive
Amplify
Transhybrid
filter
+
Frequency
response
transmit
Frequency
Transmit
response
Receive
receive
Functional Description
+
CID generation
CMP
TG 1
EXP
DTMF detection
TG 2
PCM out
PCM in
DS3, 2003-07-11
ezm14026
DuSLIC