Manualsbrain.com
  1. Manuels
  2. Marques
  3. RAD Data comm
  4. RIC-155
  5. Manuel D’Utilisation

RAD Data comm RIC-155 Manuel D’Utilisation

Télécharger
Page de 90
RIC-155 Installation and Operation Manual 
Chapter 1  Introduction 
 
Functional Description 
1-5 
1.3 Functional Description 
This section contains functional descriptions of the RIC-155 circuit blocks, shown 
in 
SDH/SONET
Link
Main Card
Ethernet
Network
Interface
CPLD
SDH/SONET
Framer
Parallel CPU Interface
MDIO/MDC Interface
Ethernet
Network
Management
Forward MII
POS Level 2t 
Interface
Fiber Optic/
Electrical
Interlace
Power
Supply
CPU
 
Figure 1-3.  RIC-155 Block Diagram 
•  Ethernet network interface supports interfacing with Ethernet network. The 
Ethernet interface is based on a multiport Fast Ethernet bridge with quality of 
service support. The ports of the Fast Ethernet bridge perform the following 
functions: 
 
Data transmission over SDH/SONET link 
 
Management from the local terminal 
 
Interconnection between bridge and CPU 
 
MAC MII configuration. 
•  CPLD is a high performance lattice programming device responsible for: 
 
Interfacing between MII port of the Fast Ethernet bridge and Level 2 POS 
interface of the SDH/SONET framer 
 
Providing MUX functions of SNI CPU interface 
 
Providing parallel CPU interface 
 
Managing front panel LEDs.