VXI Technology, Inc.
14
SMP7500 Introduction
P
ROGRAMMING AND
D
ATA
A
CCESS
Register-based Data Access:
The I/O ports are directly mapped into the VXI user
definable registers in the A24 or A32 address space.
Data access occurs in approximately 500 ns,
depending on the controller and software used.
USER CONNECTOR
GND_I/O
CLAMP
DATA
GND_CLK
GLOBAL
CLK
47k
User Selectable
HW Jumpers
22
User Configurable 100K
Pull-Up Resistor Network (SIP)
+5V +12V +24V
User Selectable
HW Jumpers
Fly
B
ack
P
rotec
tion
D
io
de
Off To All Other Ports
47K
User Selectable
HW Jumpers
120
100pf
2
2
Polarity Enable
200K
33K
Output
Drivers
Over
Current
Sense /
Control
Over Current Sense
Shut Down
ISENSE
Immediate
Double
Buffered
Latched
Output
Data
Buffer
Polarity
R/B
Control
Writes to
Specific Port
Addresses
Control
Control
Relay Req. 000Ch Write Event
WR EVENT
R/B
I/O Data
Buffer
Data
Backplane Load
Transparent
Polarity
Control
Control
All Other
Available F/P
CLK Lines
Control
WR Event
Relay Req. 000Ch Write Event
Control
Polarity
SMIP INTERFACE
MODULE
DATA
ADDRESS
CONTROL
BUSYN
TTL
TRIGGER
BUS
0-7
DATA
ADDRESS
CONTROL
VXI
BA
CKP
L
ANE
SMP7500 MODULE
Over Current
Reset
Control
Trace
Memory
F
IGURE
1-3:
SMP7500
M
ODULE
B
LOCK
D
IAGRAM
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