PEF2054 SIEMENS [Siemens Semiconductor Group], PEF2054 Datasheet - Page 242
![no-image](/images/no-image-200.jpg)
PEF2054
Manufacturer Part Number
PEF2054
Description
ICs for Communications
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEF2054.pdf
(269 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PEF20542F
Manufacturer:
infineon
Quantity:
28
Company:
Part Number:
PEF2054N
Manufacturer:
infineon
Quantity:
70
Part Number:
PEF2054NV1.0
Manufacturer:
SIEMENS/西门子
Quantity:
20 000
Part Number:
PEF2054NV2.1
Manufacturer:
LANTIQ
Quantity:
20 000
- Current page: 242 of 269
- Download datasheet (2Mb)
CBSR
CSCR
MUSAC
MOD
5.9.3.2 Space and Time Switch for 16 kbit/s Channels
The EPIC is optimized for the space and time switching of 64 kbit/s channels (8 bit time
slots). The switching of 32 and 16 kbit/s subchannels is also supported, but these
channels can only be freely selected at the PCM interface. At the CFI, only one
subchannel per 8 bit time slot can be switched (see chapter 5.4.2). Usually, this is
sufficient because on the IOM-2 interface, only one 16 kbit/s D channel per time slot
needs to be switched. Up to four D channels may then be combined into a single 8 bit
PCM time slot.
If a completely flexible space and time switch for contiguous 16 kbit/s channels is
required, the following method can be used:
The four CFI ports are connected in parallel as shown in figure 86. Each CFI port is
programmed via the CFI subchannel register (CSCR) to handle a different 2 bit subtime
slot position. With this configuration, any mixture of 16, 32 and 64 kbit/s channels may
be switched between the CFI and the PCM interfaces. Up to 128 16 kbit/s channels per
direction can be handled by the EPIC. The switching software must select the CFI port
number according to the required CFI subchannel position for each CFI - PCM
connection. The PCM subchannel position is selected via the control memory (CM) code
field (see table 24). For 32 and 64 kbit/s connections, only one CFI port of a given time
slot may be programmed in order to avoid collisions on the CFI “bus”.
CTAR
CFR
Semiconductor Group
= 0000 0010
= 0010 0000
= 0000 0000
= 0100 0100
= 1111 1111
B
B
B
B
B
= 02
= 20
= 00
= 03
= DE
H
H
H
H
H
PFS marks downstream CFI TS0
PFS marks downstream CFI bit 6, upstream
bits not shifted
64, 32, 16 kbit/s channels located on CFI bits
7 … 0, 7 … 4, 7 … 6
input mode 8
4.096 MHz device clock, conferencing
mode, A-law, even bits inverted
242
4M, output mode 4
Application Hints
PEB 2055
PEF 2055
4M
Related parts for PEF2054
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![S80C32-12](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Intel 80C32 - Siemens SAB-C501, Nearest Equivalent Replacement
Manufacturer:
Siemens Semiconductor Group
![BAT14-033](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon Schottky Diode (HiRel Discrete and Microwave Semiconductor Medium barrier diodes for detector and mixer applications)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BXY43-P1](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon PIN Diode (HiRel Discrete and Microwave Semiconductor Current controlled RF resistor for RF attenuators and switches)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BXY44-T1](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon PIN Diode (HiRel Discrete and Microwave Semiconductor Current controlled RF resistor for RF attenuators and switches)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![IRL80](/images/no-image3.png)
Part Number:
Description:
GaAs-Infrarot-Sendediode GaAs Infrared Emitter
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![IRL81](/images/no-image3.png)
Part Number:
Description:
GaAlAs-Infrarot-Sendediode GaAlAs Infrared Emitter
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BSM50GB100D](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
IGBT MODULE
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM181R](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
SIMOPAC Module (Power module Single switch N channel Enhancement mode)
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM254F](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
(BSMxxx) TRANSISTOR
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM111AR](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
SIMOPAC Module (Power module Single switch N channel Enhancement mode)
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BUZ48](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
main ratings
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![TDA4716C](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![DL440M](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![SDA5255](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet: