CT2565 Datasheet, PDF (25/31 Pages) Aeroflex Circuit Technology – CT2565 Bus Controller, Remote Terminal and BUS Monitor FOR MIL-STD-1553B

Table 9A – Pin Function Table (78 Pin DDIP)
Pin # Symbol
Description
1
RT/BC Mode Select input - logic "1" for RT mode, logic “0” for BC mode.
2
MT
Monitor mode enable. When unit is operating as a BC, a logic “0” will select monitor
mode.
3
STATEN Output signal in RT mode that indicates status word is being transferred on the
internal bus.
4
TIMEOUT Indicates No Response Timeout has occured during BC and RTU (RT to RT transfer).
5
HSFAIL Output in RT mode indicating the DMA transfer did not occur in time to allow proper
operation on the 1553 bus.
6 DBACCEPT Input signal used to set DBACCEPT bit in status register for response to a valid mode
command on the 1553 bus.
7
SSFLAG Input which controls the SSFLAG bit in the status register.
8
SVCREQ Input which controls the service request bit in the status word.
9
INCMD Output signal indicating the RT is currently in a message transfer sequence.
10
SSER
Input which controls the subsystem error bit in the status register.
11
TESTOUT Factory test point. Do not connect.
12
WC1
WC bit 1 - latched output of command word.
13
WC3
WC bit 3 - latched output of command word.
14
TXINH B Transmitter inhibit output for channel B.
15
T/R
Output indicating T/R bit of current command word in RT mode.
16
CHA/CHB Output indicating current selected channel (0 = Channel A).
17
CS
Chip Select output for subsystem memory control.
18
OE
Output Enable output for subsystem memory control.
19
BUSREQ Output signal used to initiate transfer to/from subsystem.
20
+5V
+5 Volt DC input.
21
DB0
Least significant bit - 16 bit parallel data bus.
22
DB2
Bit 2 of data bus.
23
DB4
Bit 4 of data bus.
24
DB6
Bit 6 of data bus.
25
DB8
Bit 8 of data bus.
26
DB10
Bit 10 of data bus.
27
DB12
Bit 12 of data bus.
28
DB14
Bit 14 of data bus.
29
LWORD Last word output during BC mode indicates last data word of the current message
transfer has been transferred on the parallel bus.
Aeroflex Circuit Technology
25
SCDCT2565 REV B 8/10/99 Plainview NY [phone]