Chapter 1 Introducing the V1553B V1553B UserÕs Manual
1.3 Specifications of the V1553B
Controller:
BU61580 from DDC
Protocol Modes:
Bus-Controller (BC)
Remote Terminal Unit (RTU)
Bus Monitor (MT)
Mode Selection:
Software programmable
RAM Size:
4k x 16 Shared RAM
Oscillator Frequency:
16.0 MHz
MIL-STD-1553 Channels:
One / two serial, dual-redundancy, channels (A & B) each
with their own connectors for standard Twin-axial cable,
using Trompeter BJ77 connectors.
Interfacing to 1553 Bus:
Jumper Selectable, for short stub (direct coupled) or for
long stub (transformer coupled).
Time Tag Counter:
16-Bit read/write counter with 2, 4, 8, 16, 32 or 64
µ
s per
LSB resolution. May be clocked externally or may be
incremented per software.
Command Illegalization:
Software programmable.
Interrupts (VMEbus):
Software programmable
Levels:
IRQ1* to IRQ7*
Address Modifier:
Supports Standard and Short Defined AM codes.
VMEbus Interface:
A24:D16 Slave
Power Requirements:
(25% Duty Cycle)
+5V DC (
±
5%), (500 mA max.) < 5W
-12V DC (
±
10%), (200 mA max.) < 5W
Temperature Ranges
Operating:
-25
°
to +85
°
C (extended E2)
Storage:
-55
°
to +165
°
C
Operating Humidity:
0 to 95% (non-condensing)
Board Size:
Single-height Eurocard 100 x 160mm (4 x 6
1
/4")
VMEbus Connector:
DIN 41612 style C, 96 contacts, P1 connector
Front Panel Width:
4 HP (20.3mm), 1 slot
Front Panel Functions:
Two / four Twin-axial 1553 standard connectors; input for
external Time-Tag clock.
On-Board LEDs
Fail indicator
(Red LED)
Bus Active indicator (Yellow LED)
Power ON indicator (Green LED)
* Active low signals,
1.4 Related Publications
For more information regarding the V1553B, and VMEbus products in general, please refer to the VMEbus
Specifications.
For information about the 1553 bus, please refer to the ANSI specifications or the DDC designers guide.
For information about the BU61580 chip, please refer to the data sheet or to the designers guide available from
DDC.
Page 1-2
© 1996 PEP Modular Computers
June 22, 1998
