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RTR-9
1.5 MIL-STD-1553B Subaddress and Mode Code Definitions
1.6 Terminal Address
The Terminal Address of the RTR is programmed via five
input pins: RTA(4:0) and RTPTY. Asserting MRST latches
the RTR’s Terminal Address from pins RTA(4:0) and parity
bit RTPTY. The address and parity cannot change until the
next assertion of the MRST. The parity of the Terminal
Address is odd; input pin RTPTY is set to a logic state to
satisfy this requirement. A logic 1 on Status Register bit 12
indicates incorrect Terminal Address parity. An
example follows:
RTA(4:0) = 05 (hex) = 00101
RTPTY = 1 (hex) = 1
Sum of 1’s = 3 (odd), Status Register bit 12 = 0
RTA(4:0) = 04 (hex) = 00100
RTPTY = 0 (hex) = 0
Sum of 1’s = 1 (odd), Status Register bit 12 = 0
Table 1: Subaddress and Mode Code Definitions Per MIL-STD-1553B
Subaddress Field
Binary (Decimal)
Message Format
Description
Receive
Transmit
00000 (00)
1
1
Mode Code Indicator
00001 (01)
User Defined
User Defined
00010 (02)
User Defined
User Defined
00011 (03)
User Defined
User Defined
00100 (04)
User Defined
User Defined
00101 (05)
User Defined
User Defined
00110 (06)
User Defined
User Defined
00111 (07)
User Defined
User Defined
01000 (08)
User Defined
User Defined
01001 (09)
User Defined
User Defined
01010 (10)
User Defined
User Defined
01011 (11)
User Defined
User Defined
01100 (12)
User Defined
User Defined
01101 (13)
User Defined
User Defined
01110 (14)
User Defined
User Defined
01111 (15)
User Defined
User Defined
10000 (16)
User Defined
User Defined
10001 (17)
User Defined
User Defined
10010 (18)
User Defined
User Defined
10011 (19)
User Defined
User Defined
10100 (20)
User Defined
User Defined
10101 (21)
User Defined
User Defined
10110 (22)
User Defined
User Defined
10111 (23)
User Defined
User Defined
11000 (24)
User Defined
User Defined
11001 (25
User Defined
User Defined
11010 (26)
User Defined
User Defined
11011 (27)
User Defined
User Defined
11100 (28)
User Defined
User Defined
11101 (29)
User Defined
User Defined
11110 (30)
User Defined
User Defined
11111 (31)
1
1
Mode Code Indicator
Notes:
1. Refer to mode code assignments per MIL-STD-1553B
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