CT2565 Aeroflex Circuit Technology, CT2565 Datasheet - Page 12

• Manufacturer Part Number: CT2565
• Description: CT2565 Bus Controller/ Remote Terminal and BUS Monitor FOR MIL-STD-1553B
• Manufacturer: Aeroflex Circuit Technology

Aeroflex Circuit Technology
STOP
STATEN PULSED
STATUS TO 1553
HS FAIL
TXFER
STOP
RT-RT
RT-RT
STOP
YES
Notes:
(1) Steps marked with " _ _ _" indicates operation is transparent to user.
(2) Steps marked with " ___" indicates user interaction required.
NO
NO
YES
WORD COUNT LATCHED
CMD WORD RECEIVED
COMMAND WORD
MODE CODE PULSE
(MODE CODE ONLY)
WORD VALIDATION
T/R BIT LATCHED
Figure 12 – RTU Single Message Transfer Flow Diagram
ILLEGALIZED
SOM PULSED
HANDSHAKE
FROM 1553
EXPECTED
ADDR
(DMA)
DATA
CMD
RT
A
?
?
NO
YES
YES
HS FAIL
STOP
STATUS TO 1553
STOP
YES
12
INCREMENT MEM ADDR
END OF MESSAGE
STATEN PULSED
STATUS TO 1553
MEMORY READ
DATA TO 1553
SHORT LOOP
HANDSHAKE
DATA WORD
FROM SSIU
OUTPUT
PULSED
DATA?
MORE
(DMA)
BUSY
STOP
SSU
NO
NO
YES
DATA WORD(S)
NO
CMD
RX
A
SCDCT2565 REV B 8/10/99 Plainview NY [phone]
INCREMENT MEM ADDR
WORD VALIDATION
DATA FROM 1553
STATEN PULSED
MEMORY WRITE
STATUS TO 1553
SHORT LOOP
HANDSHAKE
DATA WORD
YES
OUTPUT
TO SSIU
DATA?
(DMA)
MORE
NO
HS FAIL
YES