HI-6110 (REMOTE TERMINAL MODE)
EXAMPLE RT MIL-STD-1553 MESSAGE SEQUENCES
The HI-6110 RT receives an RT to RT transfer with 2 data words
command from the MIL-STD-1553 bus. In this case, the HI-6110
is the receiving RT. The HI-6110 captures the message data and
issues the necessary Status Word. In this particular example, the
host did not update the Status Word Register and the HI-6110 re-
issues the last value of SW.
Example 4. RT to RT Transfer,
HI-6110 is the receiving RT
Host Read and Decode Message
Host Change Bus if required
Host Read Data FIFO (Data Word 1)
Host Read Data FIFO (Data Word 2)
STR
Receive
Command
Transmit
Command
Status
Word 1
Data
Word 1
Data
Word 2
Status
Word 2
MIL-STD-1553 Bus
From MIL-STD-1553 bus
From Transmitting RT
From HI-6110 RT
VALMESS
RCVCMDA/B
RCVA/B
FFEMPTY
The HI-6110 RT receives a Mode Code Command without Data
Word from the MIL-STD-1553 bus. The correct Status Word is
output. In this example, the host updates the Status Word register
prior to RT response. The Status Word update must be
completed within 5uS after the RCVA/B rising edge. If no host
write is performed, the HI-6110 will output the current value of the
Example 5. Mode Code Command without Data Word
Host Write SW (Status Word)
Host Read CW1 (Command Word)
Host Read and Decode Message Register
STR
Mode Code
MIL-STD-1553 Bus
Command
Status
Word
From MIL-STD-1553 bus
From HI-6110 RT
VALMESS
RCVA/B
FFEMPTY
The HI-6110 RT receives a Mode Command with Data Word
(Transmit) from the MIL-STD-1553 bus. The required Status
Word and Mode Data Word are transmitted by the HI-6110 RT. In
this particular example, the host updates both the Status Word
and Mode Data registers prior to RT response. A Status Word
update must be completed within 5uS after the RCVA/B rising
edge. If no host writes are performed, the HI-6110 will output the
current values of the SW register and Mode Data register.
Example 6. Mode Code with Data Word (Transmit)
Host Write MODE (Mode Data)
Host Write SW (Status Word)
Host Read CW1 (Control Word)
Host Read and Decode Message Register
STR
Mode Code
Command
Status
Word
Mode
Data
MIL-STD-1553 Bus
VALMESS
From MIL-STD-1553 bus
From HI-6110 RT
RCVA/B
FFEMPTY
HOLT INTEGRATED CIRCUITS
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HOLTIC [ HOLT INTEGRATED CIRCUITS ]
