HI-6110 (REMOTE TERMINAL MODE)
RT OPERATION
TRANSMIT MODE DATA WORD REGISTER (Write only) Write Address: X001
Mode Data Word 15:0
The write-only Transmit Mode Data Word register is loaded by
the host with the Mode Data word to be transmitted by the
remote terminal in response to a mode code with mode data
word (transmit) command. The Transmit Mode Data Word
register is not affected by MR, master reset.
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
MSB
LSB
RECEIVE MODE DATA WORD REGISTER (Read only) Read Address: 0010
Mode Data Word 15:0
The read-only Receive Mode Data Word register holds the
value of the last mode data word received during a mode code
with data word (receive) command addressed to this RT. This
register is reset only by MR master reset.
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
MSB
LSB
The Message Register identifies command type when a new
valid command is received from the MIL-STD-1553 bus
controller. When a valid command is received, message type
is decoded and appropriate Message Register bit(s) are set.
Two bit pairs are mirrored: Bit pair 3 and 12, Bit pair 5 and 13.
MESSAGE REGISTER (Read only) Read Address: 0110
Not Used
Message Type Flags
11 10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
0
0
0
0
13 12
In the table below, “RTA” indicates assigned Remote Terminal
address. Broadcast command occurs when address = 11111.
Bit 10 is set for mode code or non-RT-RT transmit commands
where bits 15:11 equal RTA or 11111. Bit 10 enables detection
and “illegalization” for three undefined mode code command
types listed in the table below.
MSB 15 14 13 12 11 10
LSB
Hex Last Valid Command Decoded
Command Word 1 Bit Fields
Command Word 2 Bit Fields
NON-MODE COMMANDS
15:11
RTA
11111
RTA
10
0
9:5
4:0
15:11 10
9:5
4:0
0001 Receive command from BC, not broadcast
0080 Receive command from BC, broadcast
0004 Receive command, RT-RT, not broadcast
0100 Receive command, RT-RT, broadcast
0402 Transmit command, RTto BC
00001 -11110 XXXXX
0
00001 -11110 XXXXX
0
00001 -11110 XXXXX XXXXX
1
00001-11110 XXXXX
11111
RTA
0
00001 -11110 XXXXX not RTA 1 00001-11110 XXXXX
00001 -11110 XXXXX
1
1008 Transmit command, RT-RT, not broadcast
0200 Transmit command, RT-RT, broadcast
MODE CODE COMMANDS
not 11111 0 00001 -11110 XXXXX RTA
1
1
00001-11110 XXXXX
00001-11110 XXXXX
11111
0
00001 -11110 XXXXX RTA
0410 MC0 - MC15 T/R=1 no mode data, not broadcast RTA
0400 * MC0 - MC15 T/R=1 no mode data, broadcast 11111
0410 MC0 - MC15 T/R=0 not broadcast, UNDEFINED RTA
1
1
0
0
1
1
0
0
0000 or 11111 0XXXX
0000 or 11111 0XXXX
0000 or 11111 0XXXX
0000 or 11111 0XXXX
0000 or 11111 1XXXX
0000 or 11111 1XXXX
0000 or 11111 1XXXX
0000 or 11111 1XXXX
Command Word 2
only applies for
RT-RTcommands
0400 MC0 - MC15 T/R=0 broadcast, UNDEFINED
2420 MC16 - MC31 T/R=1 mode data, not broadcast
0400 * MC16 - MC31 T/R=1 broadcast, UNDEFINED
0040 MC16 - MC31 T/R=0 mode data, not broadcast
0800 MC16 - MC31 T/R=0 mode data, broadcast
*Two cases where 0400 is reset 550nS after RCV
11111
RTA
11111
RTA
11111
RESET TRANSMIT DATA FIFO (Write Only) Write Address: X010
Performing a host write cycle to register address X010 causes
the Transmit Data FIFO to be cleared. New data may be
loaded into the FIFO by writing to register address X011 as
described above.
Don't Care
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Note that no data is stored when performing a write cycle to
register address X010 and the actual data presented on the
databus is not used (don't care).
MSB
LSB
HOLT INTEGRATED CIRCUITS
16
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
