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UT1553BRTR Datasheet, PDF (1/44 Pages) List of Unclassifed Manufacturers – Remote Terminal with RAM | |||
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UT1553B RTR Remote Terminal with RAM
FEATURES
à Complete MIL-STD-1553B remote terminal interface
à 1K x 16 of on-chip static RAM for message data,
completely accessible to host
à Self-test capability, including continuous loop-back
compare
à Programmable memory mapping via pointers for
efï¬cient use of internal memory, including buffering
multiple messages per subaddress
à RT-RT Terminal Address Compare
à Command word stored with incoming data for
enhanced data management
à User selectable RAM Busy (RBUSY) signal for slow
or fast processor interfacing
à Full military operating temperature range, -55°C to
+125°C, screened to the speciï¬c test methods listed in
Table I of MIL-STD-883, Method 5004, Class B, also
Standard Military Drawing available
à 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-conï¬gured
1K x 16 static RAM. In addition, the RTR has a ï¬exible
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 RTRâs memory
meets all of MIL-STD-1553B message storage needs
through user-deï¬ned 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
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