HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 67

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

MODE COMMAND PROCESSING, Cont.
(1) The 22 undefined mode commands can be rendered invalid by setting the UMCINV (undefined mode codes invalid) option bit in
Configuration Register1. If UMCINV is asserted, there is no recognition of the undefined command by the terminal. If UMCINV is zero,
the commands are considered valid. Terminal response when UMCINV equals 0 is wholly determined by the Illegalization Table:
(2) Response to the reserved mode commands is fully defined by Illegalization Table settings. As described in (a) and (b) above, the
terminal illegalizes any reserved mode command having Illegalization Table bit equal to 1, and responds “in form” when the Table bit
equals zero. The “in form” response for reserved mode commands 16 through 31 transacts a received or transmitted data word.
a) If a command’s bit in the Illegalization Table equals zero, the terminal responds “in form” with Clear Status. Mode commands
17, 20 and 21 are undefined when T/ bit equals one, but will transmit a contiguous data word. Mode commands 16, 18 or 19 are
undefined when T/ bit equals 0, but will receive a contiguous data word.
b) If a command’s bit in the Illegalization Table equals one, the command is considered illegal. The Message Error (ME) status bit
is asserted and the terminal transmits status without data word. Illegal mode commands 16-31 will not transmit or receive a mode
data word.
Command
T/ Bit
R
0
1
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
R
Mode Code
Binary Dec.
00000
01111
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01111
10000
10000
10001
10001
10010
10010
10011
10011
10100
10100
10101
10101
01001
01111
01001
01111
to
to
to
to
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
31
22
31
to
to
to
to
0
0
1
2
3
4
5
6
7
8
9
FOR THE HI-6120 / HI-6121 REMOTE TERMINAL
R
MIL-STD-1553B
Defined Function
Undefined Mode Commands 0 -15
with T/ bit equal to 0
Dynamic Bus Control
Synchronize (without data)
Transmit Status Word
Initiate Self-Test
Transmitter Shutdown
Override Transmitter Shutdown
Inhibit Terminal Flag
Override Inhibit Terminal Flag
Reset Remote Terminal
Reserved Mode Commands 9 - 15
with T/ bit equal to 1
Undefined Mode Command
Transmit Vector Word
Synchronize With Data
Undefined Mode Command
Undefined Mode Command
Transmit Last Command
Undefined Mode Command
Transmit Built-In Test Word
Selected Transmitter Shutdown
Undefined Mode Command
Override Selected Transmitter Shutdown
Undefined Mode Command
Reserved Mode Commands 22 - 31
with T/ bit equal to 0
Reserved Mode Commands 22 - 31
with T/ bit equal to 1
MODE CODE COMMAND SUMMARY
HOLT INTEGRATED CIRCUITS
R
R
R
R
HI-6120, HI-6121
67
Associated
Data Word
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
Broadcast
Allowed
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
Note
See
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)