HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 97

• 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
Mode code command
with mode code 10001
and T/ bit equals 0
Invalid command word.
——— OR ———
T/ bit equals 1 and
UMCINV bit in Config.
Register 1 equals 1 ***
——— AND ———
UMCINV bit in Config.
Register 1 equals 0.
The Illegalization Table
bit equals 0 *
——— AND ———
UMCINV bit in Config.
Register 1 equals 0.
The Illegalization Table
bit equals 1 **
Mode code command
word not followed by a
contiguous data word
(missing data word)
Mode code command
word followed by data
word with Manchester
encoding or parity error
(bad data word)
* Command is illegal but terminal is not using “illegal command detection” (in form response).
** Command is illegal and terminal is using “illegal command detection”
*** Undefined mode command rendered invalid by UMCINV option bit. Command’s bit in Illegalization Table is “don’t care”.
MC17 EXCEPTIONS:
SYNCHRONIZE
T/ bit equals 1
T/ bit equals 1
R
WITH DATA
R
R
(MC17)
WORD
R
Terminal Response
to Received Command
Default response: Reset
Message Error (ME)
status. and transmit
Status Word. If broadcast,
set BCR status bit and
suppress Status response.
Device stores received data word in the assigned ping-pong or index data buffer (or in Descriptor Word 4
for SMCP Simplified Mode Command Processing). Configuration Register 2 MCOPT2 and MCOPT3 bits
allow automatic Time-Tag count loading using the data word received. If MCOPT2 equals 1, the received
data word is automatically loaded to the Time-Tag counter
(bit 0) equals 0
counter
data word is unconditionally loaded into the Time-Tag counter. For non-broadcast commands, counter
load occurs before status word transmission.
No terminal response,
the message is ignored.
No Status Word change.
(mode code is undefined
when T/ bit equals 0)
Respond “In form”: Reset
Message Error (ME) status.
If not broadcast, transmit
Status Word. If broadcast,
set the BCR status bit and
suppress status response.
Set Message Error (ME)
status. If not broadcast,
transmit Status Word.
If broadcast, also set
Status Word BCR bit and
suppress Status response.
No Status Word transmit.
Set the Message Error
(ME) status bit.
If broadcast, set the
BCR status bit.
No Status Word transmit.
Set the Message Error
(ME) status bit.
If broadcast, set the
BCR status bit.
R
if the low order bit of the received data word (bit 0) equals 1.
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
. If MCOPT3 equals 1, the received data word is automatically loaded to the Time-Tag
SUMMARY OF MESSAGE RESPONSES
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
97
Bits Updated
in Descriptor
Control Word
DBAC bit reset.
BCAST bit reset.
DPB bit toggles.
No change.
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.
DBAC bit set.
BCAST bit updated.
DPB bit toggles.
if the low order bit of the received data word
Bits Updated
in Data Buffer
Msg Info Word
Normal CS update:
BUSID bit updated.
MERR bit reset.
ILCMD bit reset.
RTRT bit reset.
(All error bits reset.)
No Message Info
Word is written
Normal CS update:
BUSID bit updated.
MERR bit reset.
ILCMD bit reset.
RTRT bit reset.
(All error bits reset.)
ILCMD bit set.
MERR bit set.
BUSID bit updated.
RTRT bit reset.
(Other error bits reset.)
MERR bit set.
WCTERR bit set.
BUSID bit updated.
ILCMD bit reset.
RTRT bit reset.
(Other error bits reset.)
MERR bit set.
IWDERR bit set.
BUSID bit updated.
ILCMD bit reset.
RTRT bit reset.
(Other error bits reset.)
If both bits are set, the received
Interrupt
Options
ILCMD
MERR
MERR
None
IWA
IWA
IWA
IWA
IWA
IBR
IBR
IBR
IBR