CT2561 Datasheet, PDF (5/9 Pages) Aeroflex Circuit Technology – CT2561 Bus Controller, Remote Terminal and BUS Monitor FOR MIL-STD-1553B

Table 1A – Pin Function Table (78 Pin Plug-In) (continued)
Pin #
Symbol
I/O
Description
57
EOM
O End of message output. Logic "0" occurs when BC/RT message is completed.
58
BUFENA
I Buffer enable input, may be driven LOW by STATEN or BITEN if subsystem
must read bit or Status words. Enables internal 16 bit bus onto subsystem bus.
59
BUSACK
O Bus acknowledge output. LOW during DMA Handshake, in response to
BUSGRNT.
60
DB1
I/O Bit 1 of 16 bit parallel bus.
61
DB3
I/O Bit 3 of 16 bit parallel bus.
62
DB5
I/O Bit 5 of 16 bit parallel bus.
63
DB7
I/O Bit 7 of 16 bit parallel bus.
64
DB9
I/O Bit 9 of 16 bit parallel bus.
65
DB11
I/O Bit 11 of 16 bit parallel bus.
66
DB13
I/O Bit 13 of 16 bit parallel bus.
67 DB15(MSB) I/O Bit 15 of 16 bit parallel bus.
68
STATERR
O BC output indicates one or more bits set or address mismatch in a received
status word.
69
TXDATA A O Bipolar serial data output to negative input of bus transceiver.
70
RXDATA A
I Bipolar serial data input from positive output of bus transceiver.
71
NODT
O No data input. Logic "0" indicates the 1553 bus is idle; HIGH means device front
end is active.
72
RTAD0
I LSB of 5 bit RT address.
73
RTAD2
I Bit 2 of RT address.
74
RTAD4
I Bit 4 of RT address.
75
BCSTRCV O Broadcast receive. Logic "0" means the current command was a broadcast
command.
76
TXDATA B O Bipolar serial output to positive input of bus transceiver.
77
RXDATA B
I Bipolar serial input from negative output of bus transceiver.
78
SOM
O Start of message output indicates beginning of RT/BC message transfer
sequence.
Aeroflex Circuit Technology
5
SCDCT2561 REV A 8/16/99 Plainview NY [phone]