Unit installation

Chapter 1 Introduction Installation and Operation Manual
1-12 Functional Description FCD-E1
Address Bus
Data Channel
FCD-E1
Data Bus
Clock Bus
Data Channel
or Ethernet
Ports
Data Channel
RSER
TSER
Control Logic
Inband
Management
interface
Sublink
LIUFramer
LIUFramer
Main Link
Main Link Port
Sublink Port
Bypass
Bridge
(Option)
Management
Subsystem
LCD
Rear Panel Interface
(Serial Port
or Ethernet)
Internal Voltages
Fuse
AC Input
Power
Connector
Main
Power Supply
POWER
Data Channel
or Ethernet Interface
FCD-E1
Front Panel
Serial Port
Interface
Figure 1-3. FCD-E1 Functional Block Diagram
Receive Path
The receive path of the LIU recovers the received E1 signal and the associated
clock signal. The recovered clock signal is used by other module circuits, and is
also applied on the clock bus. The recovered E1 signal is decoded by an HDB3
decoder, and sent to the receive path of the E1 framer in NRZ format.