Clock Controller Interface; Clock Rate Converter - Meridian Nortel 1 Option 11C Technical Reference Manual

Page 454 of 544
Table 142
DS-1 line interface pinout for NTBK04 cable
From 50-pin MDF
connector
pin 48
pin 23
pin 25
pin 49
pin 24

Clock controller interface

Clock rate converter

553-3011-100 Standard 14.00
NTAK09 1.5 Mb DTI/PRI card
Connector pinout
The connection to the external digital carrier is via a 15 position Male D type
connector.
to DB-15
pin 1
pin 9
pin 2
pin 3
pin 11
The purpose of the clock controller interface is to provide the recovered clock
from the external digital facility to the clock controller daughterboard via the
backplane. Depending on the equipped state of the clock controller, the clock
controller interface enables or disables the appropriate reference clock
source, in conjunction with software.
The 1.5 Mb clock is generated by a phase-locked loop (PLL). The PLL
synchronizes the 1.5 Mb DS1 clock to the 2.56 Mb system clock through the
common multiple of 8 kHz by using the main frame synchronization signal.
January 2002
signal name
T transmit tip to network
R transmit ring to network
FGND frame ground
T1 receive tip from network
R1 receive ring from network
description