CT2565 Aeroflex Circuit Technology, CT2565 Datasheet - Page 20

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

Aeroflex Circuit Technology
Simultaneous Transmission
Transmissions
alternate 1553-bus channels will be captured by
CT2565
BUSREQ is answered by the subsystem with a
BUSGRNT within the handshake timeout period.
RESET Signal
Pulsing RESET low will suspend MT operation by
(1) INCMD goes high (EOM goes low on the rising
edge) and (2) the CT2565 enters an idle state.
MT operation may be restored by pulsing
BCSTART low (above) or another mode of
operation may be selected (See Table 2).
Handshake
Write Only
BUSGRNT (45)
CYCLE
BUSREQ (19)
BUSACK (59)
ADRINC (49)
D0 - D15
WR (44)
CS (17)
sequentially
SYM
t10
appearing
t1
t2
t3
t4
t5
t6
t7
t8
t9
providing
BUSREQ to BUSGRNT delay
BUSGRNT pulse width
BUSGRNT to BUSACK delay
BUSACK to WR delay
WR to CS time
WR and CS pulse width
DATA VALID setup
CS to ADRINC delay
ARINC pulse width
ID WORD VALID setup
simultaneously
t
1
Figure 22 – MT Transfer Timing
that
t
3
t
DESCRIPTION
2
each
on
t
4
20
Handshake Failure
Note that a handshake failure will abort the
current transfer.
receipt of a valid word on the 1553 bus.
MODE CODES
Nine of the 13 available, dual redundant mode
codes are handled by the CT2565 without user
intervention.
Dynamic Bus Control and Synchronize (no data)
require subsystem notification.
two mode codes, Transmit Vector Word and
Synchronize (with data) involve data transfer with
the subsystem. Mode command illegalization and
handling are detailed in the RTU Operation
section and listed in Table 8.
DATA VALID
t
6
t
t
7
5
Of the four remaining codes,
t
8
SCDCT2565 REV B 8/10/99 Plainview NY [phone]
Monitoring will resume upon
MIN
166
320
150
80
t
0
?
10
-
-
-
-
ID-WORD VALID
TYP
t
330
166
6
t
6
-
-
-
-
-
-
-
-
The remaining
MAX
t
9
800
370
175
166
100
25
50
25
t
8
?
-
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns