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PXB4220E

Features: • Full duplex ATM Packetizer/Depacketizer for 8 E1/T1 highways• Configurable to T1 or E1 mode via external pin• 8 T1/E1 ports configurable independently to ATM or AAL Mode• ATM Mode (PXB 4219/4220/4221): ATM cell mapping into PDH according to ITUT G.804 [26] B-ISD...

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SeekIC No. : 004467440 Detail

PXB4220E: Features: • Full duplex ATM Packetizer/Depacketizer for 8 E1/T1 highways• Configurable to T1 or E1 mode via external pin• 8 T1/E1 ports configurable independently to ATM or AAL Mod...

PXB4220E Data Sheet

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Part Number:
PXB4220E
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/27

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Product Details

Description



Features:

• Full duplex ATM Packetizer/Depacketizer for 8 E1/T1 highways
• Configurable to T1 or E1 mode via external pin
• 8 T1/E1 ports configurable independently to ATM or AAL Mode
• ATM Mode (PXB 4219/4220/4221):
ATM cell mapping into PDH according to ITUT G.804 [26]
B-ISDN User-Network interface - Physical Layer according to ITU-T I.432 [32]
B-ISDN User-Network interface - Physical Layer operation at 1544 KBit/s and 2048 KBit/s according to ITU-T I.432.3 [34]
• AAL Mode (PXB 4220/4221):
AAL1 according to ITU-T I.363.1 [31] or transparent without any adaptation layer overhead (AAL0)
T1/E1 unstructured service according to ATM Forum af-vtoa-0078.000 [10] section 3
Structured T1/E1 N x 64 kbit/s service according to [10] section 2 with M channels of N x 64 kbit/s (M,N = 1to 24 for T1) (M,N = 1to 32 for E1)
Channel Associated Signalling (CAS) support according to [10]
Echo Canceller Mode
Partially filled cells with programmable filling thresholds
Selectable Sequence Count Algorithm:
Robust/Fast according to ITU-T I.363.1 [30]
According to ETSI (prl-ETS 300353 annex D) [17]
Fast: Saves 6 ms during reassembly for 1 x 64 kbit/s connection
AAL0 option: 48 Bytes user payload per ATM Cell, without AAL overhead
Reassembly buffer can compensate up to +/- 4 ms Cell Delay Variation (CDV)
Statistics counters per channel for lost/misinserted/errored cells etc.
Internal clock recovery circuit using Synchronous Residual Time Stamp (SRTS, for fully filled cells only) or Adaptive Clock Method (ACM) for unstructured CES ports.For SRTS a patent fee needs to be paid. Optionally, it's possible to order the PXB 4221 device, which comes without SRTS clock recovery.
Trunk freezing and conditioning according to Bellcore TR-NWT-000170 [14]
• IMA interface:
Programmable threshold between read and write pointer of Mapping Buffer
Output Signal for buffer threshold crossing
Output Signal for discarded cell
Output pins for port number indication
• 8 generic framer interfaces with integrated transmit clock selector supporting
Synchronous Mode (SYM) for E1
Generic Interface Mode (GIM)
FALC Mode (FAM): Glue-less interface for Infineon's Framer and Line Interface Components (FALC)
Echo Canceller Mode (EC): ATM cells are duplicated internally and transmitted via two framer ports
• UTOPIA industry standard interface:
Level 2 in slave mode; 8 data, 5 address lines
Level 1 in master/slave mode
UTOPIA clock up to 38.88 MHz
• 16-bit generic microprocessor interface for control and configuration of the chip runs either in Intel 386EX or Motorola compatible mode
• External synchronous Flow-Through SSRAM 1 x 64k x 33 bit or 1 x 64k x 32 bit required
• Build-in data path loops for test
• Cell insertion/extraction via microprocessor interface
• 3.3 Volt power supply with 5 Volt tolerant inputs
• Typical power dissipation 1 Watt
• P-BGA-256 package
• Temperature range from -40 to +85


Specifications

Parameter Symbol Limit Values Unit
Ambient temperature under bias TA -40 to 85
Junction temperature under bias TJ 0 to 125
Storage temperature Tstg - 65 to 150
Supply voltage VCC - 0.5 to 3.6 V
Input voltage
(at any signal pin with respect to ground)		 VI - 0.5 to 5.5 V
Output voltage level
(at any signal pin with respect to ground)		 VO - 0.5 to 5.51) V
ESD robustness2)
HBM: 1.5 kW, 100 pF		 VESD,HBM 1000 V
1) The maximum high output level is limited to VCC. Due to 5V I/O tolerance output signals might be pulled to 5Vlevel by external pull-up resistors.
2) According to MIL-Std 883D, method 3015.7 and ESD Ass. Standard EOS/ESD-5.1-1993.The RF Pins 20, 21, 26, 29, 32, 33, 34 and 35 are not protected against voltage stress > 300 V (versus VS or GND). The high frequency performance prohibits the use of adequate protective structures


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