Framer DS1/E1/ISDN-PRI/T1 5V 44-Pin PLCC

The DS2151Q is a first-generation line interface unit for T1 lines that that pioneered single-chip integration of multiple functions, combining long- and short-haul and framing functionality with dual elastic stores and an 8-bit parallel control port. It continues to provide an adaptable interface unit at both network and central office interfaces. The DS2151Q meets T1 specifications, including ANSI T1 403-199X, AT&T TR 6241 (12-90), and ITU G.703, G.704 G.706, G.823, and 1.431. Under processor control, the user can access the 64 8-bit internal registers to configure the DS2152 to suit the application.

• Complete DS1/ISDN-PR1 transceiver
• Short- and long-haul trunk capability
• Independent send and receive functions
• 32-bit or 128-bit jitter attenuator
• DSX-1 and CXU line build-outs
• D4, ESF, and SLC-96^R framing
• Dual onboard elastic buffers connect to backplanes up to 8.192MHz
• Programmable output clocks for Fractional T1
• 8-bit parallel control port can be muxed or nonmuxed
• Extracts/inserts robbed-bit signals
• Detects/generates yellow and blue alarms
• Onboard FDL support circuitry
• Generates/detects CSU loop codes
• ANSI one"s density monitor/enforcer
• Path and line error counters, including BPV, CV, CRC6, and framing bit errors
• Pin-compatible with DS2153Q
• Operating ranges:
  • 5.0V
  • 0°C to +70°C (DS2151Q)
  • -40°C to +85°C (DS2151QN)