Chapter 33 — Ntak20 Clock Controller; Overview - Meridian Nortel 1 Option 11C Technical Reference Manual

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Chapter 33 - NTAK20 clock controller
Contents

Overview

This section contains information on the following topics:
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Clocking modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Physical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Faceplate LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Phase difference detector circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Digital phase lock loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Digital to analog converter . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
CPU-MUX bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Signal conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Sanity timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Microprocessor . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
External timing interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511
Hardware integrity and regulatory environment . . . . . . . . . . . . . . . . . . 511
The NTAK20 clock controller daughterboard mounts directly on the
following cards:
NTAK09 1.5 Mb DTI/PRI card (page 447)
NTBK50 2.0 Mb PRI card (page 493)
Option 11C and 11C Mini
Page 503 of 544
Technical Reference Guide

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