68P80801E30-A 5/1/2002
2-5
Gen 3 Site Controller System Manual
Chapter 2 System Description
Site Controller
Site Controller
The site control equipment consists of at least two assemblies: a site
controller and an EAS/EAS2. Most systems are configured with two
controllers (an active and a standby) and an EAS/EAS2. Refer to Figure 2-5
and Figure 2-6 for the front and rear views. For a complete description of
each assembly, refer to the appropriate chapter.
Site Controller CPU Board
The following is a list of CPU Board main features:
■
PPC750 host processor with 1MByte L2 cache
■
MPC8260 communications processor for all serial I/O
iSC412
010802JNM
EAS
OR
EAS2
IEEE 1284
INTERFACE
QUAD
T1/E1
FRAMER/
LINE DRIVER
CPU
COMMUNICATIONS
PROCESSOR
MEMORY
POWER
SUPPLY
48V
+5V
+3.3V
SITE
REFERENCE
1PPS/5MHZ
SITE REFERENCE
GPS ANTENNA
T1/E1
10 BASE 2 ETHERNET
10/100 BASE T ETHERNET
X.21
RS232 MMI
3
4
SITE CONTROLLER
BLOCK DIAGRAM
L2 CACHE
RS232 SERIAL
3
Figure 2-4
Site Controller Block Diagram