HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 84

• Manufacturer Part Number: HI-6121PQMF
• Description: MIL-STD-1553 Remote Terminal ICs
• Manufacturer: HOLTIC [Holt Integrated Circuits]

RT MESSAGE RESPONSES, OPTIONS & EXCEPTIONS, Cont.
Circumstances for
Received Message
Valid defined mode
code command that
is “illegalized” by the
IllegalizationTable
(table bit equals 1 **)
Valid undefined mode
code command.
The UMCINV bit
in Configuration
Register 1 equals 0.
.
* Terminal is using “illegal command detection” and command is legal
**Terminal is using “illegal command detection” and command is illegal.
OR terminal is not using “illegal command detection” and command may be legal or illegal (in form response).
Terminal Response
to Received Command
Set Message Error (ME) status.
If not broadcast (RT31), transmit.
Status Word without a following
mode data word. If broadcast
(RT31), also assert the BCR
status bit.
——— AND ———
For mode commands with
a mode data word
(mode codes 16-31),
no updates are made to
the Mode Command Data
Table or to the command’s
Word 4 in Descriptor Table.
If bit in Illegalization Table that
corresponds to the undefined
mode code command equals 1 **
Set Message Error (ME) status,
If not broadcast (RT31), transmit
Status Word without a
following mode data word.
If broadcast (RT31), also
assert the BCR status bit.
——— OR ———
If bit in Illegalization Table that
corresponds to the undefined
mode code command equals 0 *
Normal Status Word (Clear
Status) response. If command
was broadcast (RT31),
assert the BCR status bit.
For mode codes 16-31
with T/ bit = 1 which
transmit a data word,
the word for transmit
is read from the Mode
Command Data Table.
——— AND ———
For all mode commands
with mode data word
(mode codes 16-31),
the transmitted or
received data word is
written to command’s
Descriptor Word 4.
——— AND ———
R
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
SUMMARY OF
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
MESSAGE RESPONSES
84
Bits Updated
in Descriptor
Control Word
DBAC bit set.
BCAST bit updated.
DPB bit toggles.
DBAC bit set.
BCAST bit updated.
DPB bit toggles.
DBAC bit set.
BCAST bit updated.
DPB bit toggles.
Bits Updated
in Data Buffer
Msg Info Word
ILCMD bit set.
BUSID bit updated.
MERR bit reset.
RTRT bit reset.
(Other error bits reset.)
ILCMD bit set.
BUSID bit updated.
MERR bit reset.
RTRT bit reset.
(Other error bits reset.)
Normal CS update:
BUSID bit updated.
MERR bit reset.
ILCMD bit reset.
RTRT bit reset.
(All error bits reset.)
Interrupt
Options
(IXEQZ)
ILCMD
ILCMD
IWA
IWA
IWA
IBR
IBR
IBR