HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 83

• 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
RT-RT command
where CW2 is a
valid non-mode
(subaddress 1-30)
transmit command.
CW1 is a non-mode
receive command
for RT31. (Normal
broadcast RT-RT
transmit)
Valid mode code
command to RT31
(broadcast). The
BCSTINV bit in
Configuration
Register 1 equals 1.
Valid undefined
mode code
command. The
UMCINV bit in
Configuration
Register 1 equals 1.
Valid defined mode
code command
(including reserved
mode code) not
“illegalized” by
Illegalization Table
(table bit equals 0 *)
* Terminal is using “illegal command detection” and command is legal
OR terminal is not using “illegal command detection” and command may be legal or illegal (in form response).
Terminal Response
to Received Command
Normal Status Word
response. Clear status
is transmitted with the
commanded number of
data words. Data words for
transmit are read from the
RAM data buffer assigned
in the Descriptor Table entry
for the transmit subaddress.
No terminal response,
the message is ignored.
No Status Word change.
No terminal response,
the message is ignored.
No Status Word change.
——— NOTE ———
This only applies for the
undefined mode codes:
MC0 to MC15 with T/ = 0
MC16,18 & 19 with T/ = 0
MC17,20 & 21 with T/ = 1
If MC2 (transmit status)
or MC18 (transmit last
command) status word
from last command is
transmitted. If MC18,
data word transmitted
is read from an internal
register.
——— OR ———
If not MC2 or MC18,
normal Status Word
response. If broadcast,
assert Status Word
BCR 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.
R
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
SUMMARY OF
HOLT INTEGRATED CIRCUITS
R
R
R
HI-6120, HI-6121
MESSAGE RESPONSES
83
Bits Updated
in Descriptor
Control Word
DBAC bit set.
BCAST bit reset.
DPB bit toggles.
No change
No change
DBAC bit set.
BCAST bit updated.
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 set.
(All error bits reset).
No Message Info
Word is written
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.)
Interrupt
Options
(IXEQZ)
(IXEQZ)
None
None
IWA
IWA
IBR