Figure 4. Remote Terminal Block Diagram - Monitor Mode Operation - DDC Total-AceXtreme MIL-STD-1553 Design Manual

RT Block
RT Registers
nEXT_SSF
EXT_SRT
RTBOOT
EXT_RTA (4:0, P)
RT_AD_LAT
nMCRST / nINCMD
Configuration
Shared RAM (Applicable Logical Areas Highlighted)

Figure 4. Remote Terminal Block Diagram - Monitor Mode Operation

The Total-AceXtreme® Monitor engine provides the next generation DDC MIL-STD-
1553 Monitor (MT) architecture. This new Monitor autonomously stores individual
messages into a contiguous memory stack formatted as IRIG 106 Chapter 10 Data
Packets.
The legacy Monitor modes of operation traditionally implemented in previous
generations of DDC MIL-STD-1553 engines can be emulated easily through host
software. All information and functionality supported on the legacy Monitor engines is
supported on the AceXtreme Monitor engine, or may be extracted from the stored
messages.
IRIG 106 Chapter 10 provides interoperability for such applications as test range
telemetry, flight test instrumentation, mission recorders, video/data servers;
surveillance and reconnaissance; health and usage monitoring; mission planning,
debriefing, and training; and flight operations. IRIG 106 Chapter 10 defines a
standardized file format, and within that specific representations for several types of
flight data, including MIL-STD-1553 buses, PCM, analog, computer-generated data,
Data Device Corporation
www.ddc-web.com
M I L - S T D - 1 5 5 3 M O D E S A N D A R C H I T E C T U R E
RT Message Interpreter
Multi-RT Message
Descriptor
Slots Stack
(MCS) (MDS)
Memory Bus (32-Bit)
Global
Data Blocks
Circular DB
(DB)
(GCD)
18
1553_IN_A
1553_IN_B
1553 RT
Protocol
Engine
1553_OUT_A
1553_OUT_B
Interrupt
Status Queue
(ISQ
DS-BU-67301B-G
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