Features
■ Eight independent T1/E1 transmit and receive framers.
■ Internal DS1 transmit clock synthesis—no external oscillator necessary.
■ Comprehensive alarm reporting and performance monitoring:
    — Programmable automatic and on-demand alarm transmission.
■ Automatic facility data link:
    — Automatic transmission of ESF performance report message.
■ Common 2.048 Mbits/s, 4.096 Mbits/s, or 8.192 Mbits/s TDM highway.
■ Dual- or single-rail line-side I/O.
■ Supports one second polling interval for performance monitoring.
■ IEEE* Std. 1149.1 JTAG boundary scan.
■ 3.3 V low-power CMOS with 5 V tolerant inputs.
■ Available in 352-pin PBGA.

Applications
■ DS3 and E3 port cards for narrowband DXCs.
■ Multiservice switches.
■ High density DS1 and E1 port cards.
■ Frame relay access devices.
■ Byte-synchronous SDH/SONET mapping.
■ SONET and SDH drop alignment.
■ IP and packet routers.