PXB4221EV34NP Infineon Technologies, PXB4221EV34NP Datasheet - Page 62
![no-image](/images/manufacturer_photos/0/3/327/infineon_technologies_sml.jpg)
PXB4221EV34NP
Manufacturer Part Number
PXB4221EV34NP
Description
Manufacturer
Infineon Technologies
Datasheet
1.PXB4221EV34NP.pdf
(290 pages)
Specifications of PXB4221EV34NP
Data Rate
2.048Mbps
Number Of Channels
1
Operating Supply Voltage (typ)
3.3V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Not Compliant
- Current page: 62 of 290
- Download datasheet (4Mb)
The action chosen is determined by the “auto_reinit_uf” field in the “AAL Transmit
Reference Slot” in RAM3.
For AAL type 0 the detection of an underflow period is considered to be the detection of
cell loss. For this reason a dummy cell is inserted. The inserted dummy cell must be
reflected in the buffer filling level of the Reassembly Buffer.
4.4.1.11 Synchronization of SDT Structure with Port Structure
In normal operation the “ATM start of structure” is synchronized with the “Port start of
structure”. Since this synchronization may get lost, the coincidence of both events is
monitored. If they do mismatch, a two bit error counter is incremented. Upon reaching a
programmable threshold, the Reassembly Buffer is re-initialized and Statistics Counter
14 is incremented if enabled. The threshold value is programmed in the “sdt_oos_nr”
field of the “AAL Transmit Reference Slot” in RAM2. If the Statistics Counter 14 should
reflect “ atmfCESPointerReframes
“00”.
To compensate cell loss the Sequence Count algorithm inserts dummy cells filled with
starvation octets. In case the cell filling level is 46 octets or less, the bit count integrity
won’t be violated as the length of the AAL-user information within one SAR-SDU is
always the same. When operating with a cell-filling of 47 octets, the AAL-user
information maybe 47 octet in case of non-P format or 46 octet in case of P format SAR-
PDU. As the information on the lost cell’s SAR-PDU format is not available, it is possible
that an excess of starvation octets is transmitted. As a result, the “ATM start of structure”
might be out of phase with the “Port start of structure”.
The following procedure is implemented for re-synchronization:
• At the end of expanding a burst of dummy cells a flag is set, indicating that a phase
• When an “ATM start of structure” is received and a positive phase shift is detected
• When the detected phase shift is larger than the allowed value or negative the flag is
• When no phase shift is detected the flag is reset.
4.4.2
4.4.2.1
Each AAL transmit channel can be configured in the “channel_mode” field of the “AAL
Transmit Reference Slot” to operate in “Inactive”, “Standby” or “Active” mode.
Data Sheet
shift might occur. The maximum phase shift is 2 octets (e.g. 2 cells with pointers are
lost within a sequence of eight cells)
lower than or equal to 2 octets, an equal number of octets is deleted in the
Reassembly Buffer and the flag is reset.
reset and the Reassembly Buffer is re-initialized.
Setup
Setup of Reassembly Channels
” as defined in [
62
PXB 4219E, PXB 4220E, PXB 4221E
10
]
, “sdt_oos_nr” should be set to
Operational Description
IWE8, V3.4
2003-01-20
Related parts for PXB4221EV34NP
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PXB4221E](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
PXB4221EInterworking Element for 8 E1/T1 Lines
Manufacturer:
Infineon Technologies AG
Datasheet:
![PXB4221](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
IWE8 Interworking Element for 8 E1/T1 Lines
Manufacturer:
Infineon Technologies AG
Datasheet:
![BFP620](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BG3123R](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BG3130](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BG3130R](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BG3230](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BGA428](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![BGA616](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Manufacturer:
Infineon Technologies AG
Datasheet:
![SAB-C167CR-LM](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
16-bit microcontroller with 2x2 KByte RAM
Manufacturer:
Infineon Technologies AG
Datasheet:
![BFP182W](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
NPN silicon RF transistor
Manufacturer:
Infineon Technologies AG
Datasheet:
![BFP193W](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
NPN silicon RF transistor
Manufacturer:
Infineon Technologies AG
Datasheet:
![BFP450](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
NPN silicon RF transistor
Manufacturer:
Infineon Technologies AG
Datasheet:
![BFP520](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
NPN silicon RF transistor
Manufacturer:
Infineon Technologies AG
Datasheet:
![BGA420](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
Si-MMIC-amplifier in SIEGET 25-technologie
Manufacturer:
Infineon Technologies AG
Datasheet: