DS21Q42 Overview
The DS21Q42 is an enhanced version of the DS21Q41B Quad T1 Framer. The DS21Q42 contains four framers that are configured and read through a mon microprocessor patible parallel port. Each framer consists of a receive framer, receive elastic store, transmit formatter and transmit elastic store.
DS21Q42 Key Features
- Additional hardware signaling capability including
- Receive signaling re-insertion to a backplane multiframe sync
- Availability of signaling in a separate PCM data stream
- Signaling freezing
- Interrupt generated on change of signaling data Full HDLC controller with 64-byte buffers in both transmit and receive p