DS21Q43A

四路、E1成帧器

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Four E1(CEPT or PCM-30)/ISDN-PRI framing transceivers
All four framers are fully independent; transmit and receive sections of each framer are fully independent
Frames to FAS, CAS, CCS, and CRC4 formats
8-bit parallel control port that can be connected to either multiplexed or nonmultiplexed buses
Each of the four framers contains dual two-frame elastic stores that can connect to asynchronous or synchronous backplanes up to 8.192MHz
Easy access to Si and Sa bits
Extracts and inserts CAS signaling
Large counters for bipolar and code violations, CRC4 code word errors, FAS word errors, and E-bits
Programmable output clocks for fractional E1, per channel loopback, H0 and H12 applications
Detects and generates AIS, remote alarm, and remote multiframe alarms
Pin-compatible with DS21Q41B quad T1 framer
5V supply; low power CMOS
Available in 128-pin TQFP
Industrial (-40°C to +85°C) grade version available (DS21Q43ATN)