Description
The DS21Q42 is an enhanced version of the DS21Q41B Quad T1 Framer.
The DS21Q42 contains four framers that are configured and read through a common microprocessor compatible parallel port.
Each framer consists of a receive framer, receive elastic store, transmit formatter and transmit elastic store.
Features
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Four T1 DS1/ISDN.
- PRI/J1 framing transceivers All four framers are fully independent Frames to D4, ESF, and SLC.
- 96 R formats Each of the four framers contain dual two.
- frame elastic store slip buffers that can connect to asynchronous backplanes up to 8.192 MHz 8.
- bit parallel control port that can be used directly on either multiplexed or non.
- multiplexed buses (Intel or Motorola) Extracts and inserts robbed bit signaling Detects and generates yellow (RAI).
DS21Q42 Datasheet
