CT2553-FP AEROFLEX [Aeroflex Circuit Technology], CT2553-FP Datasheet - Page 20

• Manufacturer Part Number: CT2553-FP
• Description: CT2553 / 2554 / 2555 / 2556 Advanced Integrated MUX (AIM) Hybrid FOR MIL-STD-1553
• Manufacturer: AEROFLEX [Aeroflex Circuit Technology]

Aeroflex Circuit Technology
Figure 26 – MT Data Storage Operation
IN RAM, INCREMENTS INTERNAL
STORE IN INTERNAL REGISTER
STORE RETREIVED 1553 WORD
IN RAM, INCREMENT INTERNAL
STORE IDENTIFICATION WORD
GET STACK POINTER FROM
CHAN B XMITTER TIMEOUT
CHAN A XMITTER TIMEOUT
CHAN B LOOP TEST FAILURE
CHAN A LOOP TEST FAILURE
CHAN B XMITTER SHUTDOWN
CHAN A XMITTER SHUTDOWN
NON-MODE BROADCAST CMD TO XMIT
MESSAGE HIGH WORD COUNT
MESSAGE LOW WORD COUNT
ILLEGAL MODE CODE OR ILLEGAL
BROADCAST WITH MODE CODE
MODE CODE OR T/R ERROR
CHAN A/B LOOP TEST FAILURE
HANDSHAKE FAILURE
CHAN A/B XMITTER TIMEOUT
START COMMAND ISSUED
WORD 100 IN RAM AND
Notes:
(1) Bits 0-2 and 10-13 are latched and only cleared by a mode reset command or a master RESET.
(2) Bits 3-7 are cleared at the start of each new message and updated at the end of the message. They
(3) Bits 8-9 are set by the mode command for Transmitter Shutdown and are cleared by the mode
WORD TRANSFERRED
ADDRESS REGISTER
ADDRESS REGISTER
ACROSS 1553 BUS
reflect the present command word.
command for Override Transmitter Shutdown, Reset RT or a master RESET.
?
YES
Figure 27 – Built-In-Test Word (RTU Mode)
NO
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0
20
MT DATA STORAGE. Figure 26 shows the steps
in a MT data Storage operation.
INTERRUPTS: SA/MC - 0 (pin 13), SA/MC - 1
(pin 52) and SA/MC - 2 (on 52) represents B6,
B7, and B8 counter outputs in the MT mode. B6
counts every 32 words transferred, B7 every 64
words, and B8 every 128 words. These counter
outputs can be used to generate interrupts to the
subsystem to insure proper servicing of Memory.
The Data Word and Identification Word transfers
increment the counter by two.
BUILT-IN-TEST WORD (RTU MODE)
The CT2553 contains a 14 bit Built-In-Test (BIT)
word register which stores information about the
condition of the RTU. When a Mode Command is
received to transmit BIT word, the contents of this
register are transmitted over the 1553 data bus.
Figure 27 shows the meaning of each bit in the
BIT register. Information is included regarding
transmitter timeouts, loop test failures, transmitter
shutdown, subsystem handshake failure, and the
results of individual message validations.
MODE CODES
The
applicable to dual redundant systems. Mode
codes
appropriate
illegalization and handling are detailed in the RTU
Operation section and listed in Table 6.
CT2553
can
I/O
also
implements
SCDCT2553 REV B 8/6/99 Plainview NY [phone]
signals.
be
illegalized
all
Mode
mode
using
command
codes
the