HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 92
HI-6121PQMF
Manufacturer Part Number
HI-6121PQMF
Description
MIL-STD-1553 Remote Terminal ICs
Manufacturer
HOLTIC [Holt Integrated Circuits]
Datasheet
1.HI-6121PQMF.pdf
(116 pages)
- Current page: 92 of 116
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RT MESSAGE RESPONSES, OPTIONS & EXCEPTIONS, Cont.
Circumstances for
Received Message
Mode code command
with mode code 00110
and T/ bit equals 1
MC6 EXCEPTIONS:
Invalid command word.
——— OR ———
T/ bit equals 0 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 is followed by a
contiguous 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”.
T/ bit equals 0
T/ bit equals 0
R
TERMINAL
FLAG BIT
R
R
INHIBIT
(MC6)
R
Terminal Response
to Received Command
Default response: Reset
Message Error (ME) status
then transmit Status Word.
If broadcast, set the
Status Word BCR bit and
suppress status transmit.
The device automatically sets the TF Inhibit bit in the BIT Word register at
address 0x0013. While the TF inhibit bit is set, the device disregards
assertion of the Terminal Flag (TF) bit in the 1553 Status Bits register (0x0006)
and only transmits status with the Terminal Flag status bit reset.
Once the Terminal Flag has been inhibited, it can be reactivated by an “Override
Inhibit Terminal Flag” MC7 or “Reset Remote Terminal” MC8 mode command,
by software reset (asserting the SRST bit in Configuration Register 1) or by
asserting the
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.
R
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
MR
SUMMARY OF MESSAGE RESPONSES
master reset input pin.
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
92
Bits Updated
in Descriptor
Control Word
DBAC bit reset.
BCAST bit updated.
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 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.)
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.
MERR bit reset.
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.)
Interrupt
Options
ILCMD
MERR
None
IWA
IWA
IWA
IWA
IBR
IBR
IBR
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