Cpu Board - GE ALPS Instruction Manual

3.3 PRINTED CIRCUIT BOARD MODULES
The 960 CPU board contains the 960 processor, EEPROM for storage of user settings, CAPRAM for storage of fault data
and oscillography, and controls data transfer to other modules. The following functions are performed by the CPU board:
• Scheme Logic
• Test Mode
• Peripheral Protection Trip Logic
• Digital Output Logic
• Fault Reporting
• Power System Alarming
• Communications and Printer Control
3
The figure below contains the block diagram of the CPU logic.
EEPROM
32K x 8
CAP-
BACKED
REAL
TIME
CLOCK
TIMER
COUNTER
CAP-
BACKED
RAM
128K x 16
(512K x 16)
Figure 3–10: BLOCK DIAGRAM OF THE SYSTEM PROCESSOR (i960 CPU)
3-12
LOCAL DATA BUS
LOCAL ADDRESS BUS
INTERRUPT
ENCODER
SYS-DAT
TRANSCEIVER
SYSTEM BUS
INTERRUPT
ALPS Advanced Line Protection System
DATA BUS
WDT CLOCK
CLOCKOUT GENERATOR
COUNTER 24.576 MHz
C L O C K
R E S E T
A D D R E S S
i960
DATA
C O N T R O L
XINT
MEMORY
C O N T R O L L E R
BUFFER
SYSTEM BUS
CONTROLS
CHIP SELECTS
SIGNALS
BYTE ENABLE
SIGNALS
SYS-ADD
BUFFER
SYSTEM ADDRESS BUS
3 HARDWARE DESCRIPTION

3.3.10 960 CPU BOARD

PIPELINED / BURST
ADDRESS BUS
PROGRAM
FLASH
MEMORY
STATIC
RAM
GE Power Management