101-0506 Rabbit Semiconductor, 101-0506 Datasheet - Page 28

• Manufacturer Part Number: 101-0506
• Description: CARD CPU SR9160 128K SRAM SMRTST
• Manufacturer: Rabbit Semiconductor

Specifications of 101-0506

• Accessory Type: Smart Star CPU Card
• For Use With/related Products: SR9160
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3.1 Backplane Features
3.1.1 Power Distribution
Power is supplied to the Smart Star control system from an external source through header
J1 on the backplane. The +5 V circuitry on the Smart Star control system is protected
against reverse polarity by a Schottky diode as shown in Figure 6.
Figure 6. Smart Star Control System Power Supply Schematic
A capacitor provides surge current protection for the voltage regulator, and allows the
external power supply to be located some distance away from the Smart Star control sys-
tem. A switching power regulator is used. The
input voltage may range from 9 V to
+RAW
30 V (15 V to 30 V you plan to use a D/A Converter Card).
The backplane has inputs for two separate power supplies on header J1,
+RAW
and
V_USER
. The
+RAW
power supply goes to the switching power regulator, which outputs
the +5 V DC used by the CPU Card and by the I/O cards plugged into the backplane. The
connection allows a different voltage to be available on the I/O cards for future
V_USER
development.
NOTE: Always connect
to
with a jumper wire between terminals 1 and 2
V_USER
+RAW
on header J1 for the development activities described in the Smart Star manuals.
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Smart Star (SR9000)