PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 38

• Manufacturer Part Number: PEF 20550 H V2.1
• Description: IC INTERFACE CTRLR PCM MQFP80
• Manufacturer: Infineon Technologies
• Series: ELIC®r

Specifications of PEF 20550 H V2.1

• Function: Line Card Controller
• Interface: ISDN, PCM
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 15mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-SQFP
• Includes: Change Detection, Power-Up Reset Generation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEF20550HV2.1XT; PEF20550HV21XP; SP000007794; SP000007795

Figure 21
DECT Application
1.6.4
1.6.4.1 Adaptation of a DECT System to an Existing PBX
When adding a DECT system to an existing PBX, the line interface of the DECT system
must provide the PBX with PCM-coded voice data.
Depending on the DECT controller the voice information is carried in different formats
(4 bit ADPCM or 8 bit PCM ).
Therefore a base station offering 8 bit PCM coded data can be connected directly to any
PBX, whereas a base station delivering 4 bit ADPCM coded data needs an ADPCM to
PCM converter. Such an adapter is called Common Control Fixed Part (CCFP).
An example for a CCFP realized with the ELIC (serving up to 32 handhelds in operation
at a time) is given in the figure 21.
Semiconductor Group
1
DECT Applications
Base Stations
2
3
U
PN
4
SICOFI -4
SICOFI -4
38
OCTAT -P
R
R
R
IOM -2
IOM -2
IOM -2
R
R
R
SYNC
HDLC
D
ADPCM
ELIC
PCM
C µ
HDLC
R
QUAD
ADPCM
QUAD
ADPCM
DSP
SLIC
SLIC
PEB 20550
PEF 20550
CCFP
ITS07314
Overview
32xt/r
Trunk
01.96