DS21FT40

4x3、12通道、E1成帧器

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High-density framing capacity
12 independent E1 framers in one 27mm x 27mm package
Multi-Chip Module (MCM) contains three DS21Q44s
Each quad can concatenate into one 8.192MHz backplane data stream
Independent framers with independent receive/transmit sides
Dual two-frame elastic store slip buffers can connect to backplanes up to 8.192MHz
8-bit parallel control port configurable for muxed or nonmuxed (Intel or Motorola) operation
Easy access to Si and Sa bits
Extracts/inserts CAS signaling
Wide range of error counting: bipolar, code, CRC4, FAS, and E-bits
Programmable output clocks for Fractional E1, per-channel loopback, H0, and H12
Integral HDLC controller with 64-byte buffers, configurable for Sa bits or DS0
AIS, remote alarm, and remote multiframe alarm detection/generation
IEEE 1149.1 JTAG boundary scan architecture
Operating ranges:
- 3.3V with 5V-tolerant I/O
- 0°C to 70°C (DS21FT40)
- -40°C to +85°C (DS21FT40N)