PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 274
![no-image](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_sml.jpg)
PXB4221
Manufacturer Part Number
PXB4221
Description
IWE8 Interworking Element for 8 E1/T1 Lines
Manufacturer
Infineon Technologies AG
Datasheet
1.PXB4221.pdf
(290 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PXB4221EV3.2
Manufacturer:
INFIEON
Quantity:
20 000
- Current page: 274 of 290
- Download datasheet (5Mb)
12
12.1
The ATM Adaptation Layer 1 (AAL1) consists of two sublayers: The Segmentation and
Reassembly Sublayer (SAR), which is responsible for sequence integrity of the
transmitted ATM cell stream and the Convergency Sublayer, responsible for blocking of
user data into 47-octet SAR boundaries.
Figure 74
[31].
Figure 74
Data Sheet
Pointer
CSI
SC
CRC
Py
SN
SNP
SAR
SDU
PDU
CSI
1 bit
ATM Header
3 bit
SC
= octet offset of data block over 2 cells (111 1111 if not required)
= Convergency Sublayer Indication
= Sequence Count
= Cyclic Redundancy Check
= Even Parity bit
= Sequence Number incremented by 1 modulo 8 for each SAR-SDU
= Sequence Number Protection
= Segmentation & Reassembly
= Service Data Unit
= Protocol Data Unit
Non-P Format: CSI = 0
P format:
5 octets
gives an overview on the AAL1 frame-structure as defined in ITU-T I.363.1
Appendix
ATM Adaptation Layer 1
Structure of the AAL1 SAR-PDU
CRC
3 bit
SN
CSI = 1 if SC = 0,2,4 or 6, P-field may be inserted
CSI = 0 if SC = 1,3,5 or 7, P-field is unused (Non-P format used)
1 octet
1 bit
Py
SNP
Non-P format
Parity
1 bit
P format
ATM-SDU = SAR-PDU
Pointer
7 bit
1 octet
P
48 octets
274
SAR-SDU
47 octets
User information
AAL user info
User information
N octets
47 octets
PXB4219 / PXB4220 / PXB4221
46 octets
Dummy Fill
CS-Sublayer
SAR-Sublayer
ATM Layer
Appendix
2002-05-06
Related parts for PXB4221
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![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:
![BSM20GD60DN2](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
IGBT Power Module
Manufacturer:
Infineon Technologies AG
Datasheet:
![TDA4716C](/images/manufacturer_photos/0/3/328/infineon_technologies_ag_tmb.jpg)
Part Number:
Description:
IC for switching-mode power supplies
Manufacturer:
Infineon Technologies AG
Datasheet: