Features: Line Interface• High density, generic interface for all E1/T1/J1 applications• Analog receive and transmit circuitry for long haul and short haul applications• Data and clock recovery using an integrated digital phase locked loop• Maximum line attenuation up to -4...

product image

PEB255 Picture
SeekIC No. : 004458028 Detail

PEB255: Features: Line Interface• High density, generic interface for all E1/T1/J1 applications• Analog receive and transmit circuitry for long haul and short haul applications• Data and c...

floor Price/Ceiling Price

Part Number:
Supply Ability:

Price Break

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

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions


evaluate  (4.8 stars)

Upload time: 2024/7/12

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details



Line Interface
• High density, generic interface for all E1/T1/J1 applications
• Analog receive and transmit circuitry for long haul and short haul applications
• Data and clock recovery using an integrated digital phase locked loop
• Maximum line attenuation up to -43 dB at 1024 kHz (E1) and up to -36 dB at 772 kHz (T1/J1)
• Programmable transmit pulse shapes for E1 and T1/J1 pulse masks
• Programmable line build-out for CSU signals according to ANSI T1.403 + FCC68 in steps of 0 dB, -7.5 dB, -15 dB and -22.5 dB (T1/J1)
• Low transmitter output impedances for high transmit return loss
• Tristate function of the analog transmit line outputs
• Transmit line monitor protecting the device from damage
• Jitter specifications of ITU-T I.431, G.703, G.736 (E1), G.823 (E1) and AT&T TR62411 (T1/J1) are met
• Optional crystal-less wander and jitter attenuation/compensation
• Dual rail or single rail digital inputs and outputs
• Unipolar NRZ or CMI coding for interfacing fibre optical transmission routes
• Selectable line codes (E1: HDB3, AMI - T1/J1: B8ZS, AMI with ZCS) for analog interface
• Loss of signal indication with programmable thresholds according to ITU-T G.775 and ETS300233 (E1)/ANSI T1.403, T1.231(T1/J1)
• Clock generator for jitter free system/transmit clocks
• Local loop and remote loop for diagnostic purposes
• Only one type of transformer (ratio 1:2) for E1 75/120 Ω and T1/J1 100/110 Ω P-MQFP-80-1
Frame Aligner
• Frame alignment/synthesis for 2048 kbit/s according to ITU-T G.704 (E1) and for
1544 kbit/s according to ITU-T G.704 and JT G.704 (T1/J1)
• Programmable frame formats :
E1: Doubleframe, CRC Multiframe (E1)
T1: 4-Frame Multiframe (F4,FT), 12-Frame Multiframe (F12, D3/4), Extended
Superframe (F24, ESF), Remote Switch Mode (F72, SLC96)
• Selectable conditions for recover/loss of frame alignment
• CRC4 to non-CRC4 interworking of ITU-T G. 706 Annex B (E1)
• Error checking via CRC4 procedures according to ITU-T G. 706 (E1)
• Error checking via CRC6 procedures according to ITU-T G. 706 and JT G.706 (T1/J1)
• Performs synchronization in ESF format according to NTT requirements (J1)
• Alarm and performance monitoring per second 16 bit counter for CRC-, framing errors, code violations, error monitoring via E bit and SA6 bit (E1), errored blocks, PRBS bit errors
• Insertion and extraction of alarm indication signals (AIS, Remote⁄Yellow Alarm, AUXP)
• IDLE code insertion for selectable channels
• 8.192 MHz/2.048 MHz (E1) or 8.192 MHz/1.544 MHz (T1/J1) system clock frequency
• Selectable 2048/4096 kbit/s backplane interface with programmable receive/transmit timeslot offset
• Programmable tristate function of 4096 kbit/s output via RDO
• Elastic store for receive and transmit route clock wander and jitter compensation; controlled slip capability and slip indication
• Programmable elastic buffer size: 2 frames/1 frame/short buffer/bypass
• Supports fractional E1 or T1 access
• Flexible transparent modes
• Programmable In-Band Loop Code detection and generation (TR62411)
• Channel loop back, line loop back or payload loop back capabilities (TR54016)
• Pseudo random bit sequence (PRBS) generator and monitor
• Provides loop-timed mode
• Clear channel capabilities (T1/J1)
Signaling Controller
• HDLC controller
Bit stuffing, CRC check and generation, flag generation, flag and address recognition,
handling of bit oriented functions, programmable preamble
• DL-channel protocol for ESF format according to ANSI T1.403 or according to AT&T
TR54016 (T1/J1)
• DL-channel protocol for F72 (SLC96) format
• CAS controller with last look capability, enhanced CAS- register access and freeze signaling indication
• Robbed bit signaling capability (T1/J1)
• Provides access to serial signaling data streams
• CAS Multiframe synchronization and synthesis according to ITU-T G.732
• Alarm insertion and detection (AIS and LOS in Timeslot 16)
• Transparent mode
• FIFO buffers (64 bytes deep) for efficient transfer of data packets.
• Time-slot assignment
Any combination of time slots selectable for data transfer independent of signaling
Microprocessor Interface
• 8/16 bit microprocessor bus interface (Intel or Motorola type)
• All registers directly accessible (byte or word access)
• Multiplexed and non-multiplexed address bus operations
• Extended interrupt capabilities
• Hardware and software reset
• One second timer
• Boundary scan standard IEEE 1149.1
• P-MQFP-80 package; body size 14x14; pitch 0.65
• 5V power supply
• Typical power consumption 450 mW


• Wireless Basestations
• E1/T1/J1 ATM Gateways, Multiplexer
• E1/T1/J1 Channel & Data Service Units (CSU, DSU)
• E1/T1/J1 Internet Access Equipment
• LAN/WAN Router
• Digital Access Cross Connect Systems (DACS)
• SONET/SDH Add/Drop Multiplexer


  Connection Diagram

Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
Motors, Solenoids, Driver Boards/Modules
Semiconductor Modules
LED Products
Fans, Thermal Management
Optical Inspection Equipment
View more