pxb4219 Infineon Technologies Corporation, pxb4219 Datasheet - Page 6
![no-image](/images/no-image-200.jpg)
pxb4219
Manufacturer Part Number
pxb4219
Description
Iwe8 Interworking Element For 8 E1/t1 Lines
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PXB4219.pdf
(290 pages)
- Current page: 6 of 290
- Download datasheet (4Mb)
4.2.1.2
4.2.1.3
4.2.1.4
4.2.2
4.3
4.3.1
4.3.1.1
4.3.1.2
4.3.1.3
4.3.1.4
4.3.1.5
4.3.1.6
4.3.1.7
4.3.2
4.4
4.4.1
4.4.1.1
4.4.1.2
4.4.1.3
4.4.1.4
4.4.1.5
4.4.1.6
4.4.1.7
4.4.1.8
4.4.1.9
4.4.1.10
4.4.1.11
4.4.2
4.4.2.1
4.4.2.2
4.4.2.3
4.4.2.4
4.5
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.5.10
Data Sheet
AAL Segmentation Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
AAL Reassembly Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Internal Clock Recovery Circuit (ICRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Setup of ATM Receive Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Setup of AAL Segmentation Channels . . . . . . . . . . . . . . . . . . . . . . . . . 59
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Frame Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Frame Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
RTS Receive FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
RTS Transmit FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
ICRC Loopback Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
RTS Injection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Fractional Divider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
HEC Check: Header Error Detection and Correction . . . . . . . . . . . . 51
Cell Payload Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Idle, Physical Layer or Unassigned Cell Deletion . . . . . . . . . . . . . . . 52
Segmentation Port Decorrelation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Segmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Transport of the Framer Port Number . . . . . . . . . . . . . . . . . . . . . . . . 56
Transport of CAS Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
CAS Conditioning and Freezing Upstream . . . . . . . . . . . . . . . . . . . . 57
Segmentation Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Padding Partially Filled Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Port and Channel Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Sequence Number Protection field check . . . . . . . . . . . . . . . . . . . . . 61
Sequence Number field check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
RTS Extraction and Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Pointer Field Detection and Verification . . . . . . . . . . . . . . . . . . . . . . . 62
CAS Conditioning and Freezing Downstream . . . . . . . . . . . . . . . . . . 63
Insertion of Dummy Cells at Cell Loss . . . . . . . . . . . . . . . . . . . . . . . . 63
Reassembly Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Handling of Reassembly Buffer Overflow . . . . . . . . . . . . . . . . . . . . . 64
Handling of Reassembly Buffer Underflow . . . . . . . . . . . . . . . . . . . . 64
Synchronization of SDT Structure with Port Structure . . . . . . . . . . . . 65
Setup of Reassembly Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Physical Reassembly Buffer Size . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Initialization of the Reassembly Buffer . . . . . . . . . . . . . . . . . . . . . . . . 67
Re-Initialization of the Reassembly Buffer . . . . . . . . . . . . . . . . . . . . . 72
6
PXB4219 / PXB4220 / PXB4221
2002-05-06
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