HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 86

• 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 00000
and T/ bit equals 1
CONTROL (MC0)
The mode code’s bit
in Illegalization Table
equals 0 *
——— OR ———
The mode code’s bit
in Illegalization Table
equals 1 **
MC0 EXCEPTIONS:
Broadcast address RT31
(broadcast not allowed)
Mode code command
word is followed by a
contiguous data word
Invalid command word.
——— OR ———
T/ bit equals 0 and
UMCINV bit in Config.
Register 1 equals 1 ***
T/ bit equals 0 and
UMCINV bit in Config.
Register 1 equals 0.
Illegalization Table
bit equals 0 *
T/ bit equals 0 and
UMCINV bit in Config.
Register 1 equals 0.
Illegalization Table
bit equals 1 **
* 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”.
DYNAMIC BUS
R
R
R
R
Terminal Response
to Received Command
HI-6110 is not equipped to accept
bus control duties. The host must
initialize device to respond using
either of the two following methods:
RT is not using “illegal
command detection.”
Respond “in form”: Reset
Message Error (ME) status
and transmit Status Word.
——— OR ———
RT is using “illegal
command detection”and
mode code is illegalized.
Set Message Error (ME)
status and transmit Status.
No Status Word transmit.
Set the Message Error
(ME) and BCR status bits.
No Status Word transmit.
Set the Message Error
(ME) status bit.
No terminal response,
the message is ignored.
No Status Word change.
(MC0 is not ndefined
when T/ bit equals 0)
Respond “In form”:
Reset Message Error
(ME) status and
transmit Status Word.
Set Message Error
(ME) status and.
transmit Status Word.
R
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
SUMMARY OF MESSAGE RESPONSES
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
86
Bits Updated
in Descriptor
Control Word
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
DBAC bit set.
BCAST bit set.
DPB toggles.
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
No change.
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
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.)
ILCMD bit set.
BUSID bit updated.
MERR bit reset.
RTRT bit reset.
(Other error bits reset.)
MERR bit set.
BUSID bit updated.
ILCMD bit reset.
RTRT bit reset.
(Other error bits reset.)
MERR bit set.
WCTERR bit set.
BUSID bit updated.
ILCMD, RTRT bits reset.
(Other 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.)
Interrupt
Options
ILCMD
ILCMD
MERR
MERR
None
IWA
IWA
IWA
IWA
IWA
IWA
IBR
IBR
IBR