• Octal E1 Transceiver CP5028 is one of the ETLINK series chips designed by Chiphomer Technology Company, it integrates eight independent E1 transceivers into a single chip. Each E1 transceiver works functionally as CP5021, which provide complete function of E1 line interface and E1 Framer.

• Eight channels E1 transceiver

• Onboard line interface for clock/data recovery and waveshaping

• Supports 75ohm E1 coaxial and 120ohm E1 twisted pair applications

• 32-bit or 64-bit jitter attenuator

• Loss of signal indication with programmable thresholds according to ITU G.775, ETS 300 233

• E1 Framer support framed or unframed data reception and transmission

• The transmit and receive sections of each transceiver are fully independent

• Frames FAS, CAS, CCS and CRC-4 formats

• Each transceiver contains two 512-bit elastic buffers respectively for receive and transmit direction, ontrolled slip capability and slip indication

• Supports Sa and Si bits insertion and extraction

• Provides 4 performance monitor counters for bipolar and code violations, CRC-4 errors, E bits and FAS word errors

• Detects and generates various alarm including RCL, RLOS, AIS, RRA, RDMA, RSA1, RSA0, RSC, RUA0.

• Integrated signaling controller

　－Inserts and Extracts CAS signaling

　－HDLC controller with two 64-byte buffers

• Support four separate loop-backs for testing functions

• 8-bit microprocessor interface supports both Intel and Motorola bus mode.

• JTAG boundary scan meet IEEE 1149.1

• CMOS 3.3 V technology，5 V tolerant inputs

• Maximum power≤800 mill watt

• Operating Industrial temperature range: -40℃—85℃

• eLQFP208 package

PBX、Digital Access Cross Connect Systems (DACS)、SONET/SDH Add/Drop Multiplexer、VoIP Gateways, Multiplexer