UT1553BRTR Datasheet, PDF (1/44 Pages) List of Unclassifed Manufacturers – Remote Terminal with RAM

UT1553B RTR Remote Terminal with RAM
FEATURES
Ë Complete MIL-STD-1553B remote terminal interface
Ë 1K x 16 of on-chip static RAM for message data,
completely accessible to host
Ë Self-test capability, including continuous loop-back
compare
Ë Programmable memory mapping via pointers for
efficient use of internal memory, including buffering
multiple messages per subaddress
Ë RT-RT Terminal Address Compare
Ë Command word stored with incoming data for
enhanced data management
Ë User selectable RAM Busy (RBUSY) signal for slow
or fast processor interfacing
Ë Full military operating temperature range, -55°C to
+125°C, screened to the specific test methods listed in
Table I of MIL-STD-883, Method 5004, Class B, also
Standard Military Drawing available
Ë Available in 68-pin pingrid array package
INTRODUCTION
The UT1553B RTR is a monolithic CMOS VLSI solution
to the requirements of the dual-redundant MIL-STD-1553B
interface. Designed to reduce cost and space, the RTR
integrates the remote terminal logic with a user-configured
1K x 16 static RAM. In addition, the RTR has a flexible
subsystem interface to permit use with most processors or
controllers.
The RTR provides all protocol, data handling, error
checking, and memory control functions, as well as
comprehensive self-test capabilities. The RTR’s memory
meets all of MIL-STD-1553B message storage needs
through user-defined memory mapping. This memory-
mapped architecture allows multiple message buffering at
OUT
IN
OUT
IN
DECODER
MCSA(4:0)
MODE CODE/
SUBADDRESS
RTA(4:0)
CONTROL
REMOTE TERMINAL INPUTS
ADDRESS
COMMAND
RECOGNITION
CONTROL AND
ERROR LOGIC
STATUS
OUTPUTS
DECODER
ENCODER
MUX
1K X 16 RAM
PTR REGISTER
ADDR(9:0)
DATA(15:0)
2MHz
Figure 1. UT1553B RTR Functional Block Diagram
12MHz
RESET
RTR-1