HP 54540 Series - System Control

Chapter 8: Theory of Operation
Main Assembly Theory
P/O MAIN ASSEMBLY _ - oe hs
INTERFACE CIRCUITS '
|
RESET/ - \
PRESET
f
ACQUISITION )
| | INTERFACE
eet !
ae '
PERPHERAL W404 |
[ag ADDRESS INTERFACE _ >
1
REALTIME !
CLOCK
4
CPU Sa]
MEMORY, DISPLAY |
BOOT ROM INTERF ACE 1
A NV RAM »_|_v301 |,
SYST RAM RAM FRAME GEN
FLASH ROM VIDEO DAC 1
, 1
«
|
DISK
DRIVER
J402
3
INTERFACE
alia
P
8
8 HP - IB yaar |,
ia INTERFACE
2 Ld |
oO
RS232
INTERFACE
KEYBOARD
—]
INTERFACE
CONTROL
CLOCK LOGIC
25MHZ =a \
t
CLICKER
~
|
22MHZ 1
28 MHZ |
5MHZ
1
1
§4542855
POWER SUPPLY ASSEMBLY
System Control Diagram
System Control
The system control consists of the microprocessor, co-processor, ROM, RAM, and the inter-
face circuitry needed to control the acquisition section and peripherals. Peripherals include
the real time clock, display, keyboard, disk drive, RS-232, and HP-IB. The figure above shows
the block diagram for the system control. The system control is the same for all models.