HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 81

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

Circumstances for
Received Message
Invalid Command
Word (Manchester,
parity or bit count error)
Any valid command
to RT31 (broadcast).
when the BCSTINV
bit in Configuration
Register 1 equals 1.
RT Address Parity Error
based on RTA and RTAP
bits in the Operational
Status Register
Any valid non-mode
(subaddress 1-30)
transmit command
to RT31 (undefined
broadcast transmit).
Any valid non-mode
(subaddress 1-30)
transmit command
except for RT31. The
corresponding bit
in the Illegalization
Table equals 0. *
Any valid non-mode
(subaddress 1-30)
transmit command
except for RT31. The
corresponding bit
in the Illegalization
Table equals 1. **
Any valid non-mode
(subaddress 1-30)
receive command.
The corresponding bit
in the Illegalization
Table equals 0. *
Any valid non-mode
(subaddress 1-30)
receive command.
The corresponding bit
in the Illegalization
Table equals 1. **
**Terminal is using “illegal command detection” and command is illegal
* 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).
Table 3. RT MESSAGE RESPONSES, OPTIONS & EXCEPTIONS
Terminal Response
to Received Command
No terminal response,
the message is ignored.
No Status Word change.
No terminal response,
the message is ignored.
No Status Word change.
(Broadcast commands
For commands to the RT’s
own address or to broadcast
address RT31: No terminal
response,
No Status Word change.
No terminal response,
Set Message Error (ME)
and BCR status bits.
Normal Status Word response
(Clear Status). Data words for
transmit are read from the
RAM data buffer assigned
by the Descriptor Table entry
for the transmit subaddress.
Assert Message Error (ME)
status, then transmit
ME Status Word
without following data words.
Normal Status Word response
(Clear Status). After message
completion, the data words
received are stored in the data
buffer RAM location assigned
by the Descriptor Table entry
for the receive subaddress.
Assert Message Error (ME)
status and set BCR if broadcast.
Any received data words are
ignored and are not saved.
When data reception stops,
transmit Status Word.
are rendered invalid.)
message is ignored.
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
SUMMARY OF
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
MESSAGE RESPONSES
81
Bits Updated
in Descriptor
Control Word
No change
No change
No change
DBAC bit set.
DPB bit toggles.
BCAST bit set.
DBAC bit set.
DPB
BCAST
DBAC bit set.
DPB bit toggles.
BCAST bit reset.
DBAC bit set.
DPB bit toggles.
BCAST bit reset.
DBAC bit set.
DPB bit toggles.
BCAST bit updated.
bit toggles.
bit reset.
Bits Updated
in Data Buffer
Msg Info Word
No
Word is written
No Message Info
Word is written
No Message Info
Word is written
MERR bit set.
BUSID bit updated.
Normal CS update:
BUSID bit updated.
MERR
ILCMD bit reset.
RTRT bit updated.
(Other error bits reset).
ILCMD bit set.
BUSID bit updated.
MERR bit set.
RTRT bit updated.
(Other error bits reset).
Normal update:
BUSID bit updated.
MERR bit reset.
ILCMD bit reset.
RTRT bit updated.
(Other error bits reset).
ILCMD bit set.
BUSID bit updated.
MERR bit set.
RTRT bit updated.
(Other error bits reset)
Message
bit reset.
Info
Interrupt
optional)
Options
(IXEQZ)
(IXEQZ)
(IXEQZ)
(IXEQZ)
RTAPF
ILCMD
ILCMD
None
None
IWA
IWA
IWA
IWA
IWA
(not
IBR
IBR
IBR
IBR