ACT3492 Aeroflex, Inc., ACT3492 Datasheet - Page 14

• Manufacturer Part Number: ACT3492
• Description: MIL-STD-1553B Remote Terminal, BUS Controller or Passive Monitor Hybrid with Status Word Control Dua
• Manufacturer: Aeroflex, Inc.

Aeroflex Circuit Technology
HSFAIL
LSTCMD/CWEN
STATEN/
STATSTB
STAT UPDATE
BITEN/
RMDSTB
DWSYNC
ENABLE
CMSYNC
NDRQ
NEXT STAT
MASTER RESET
Signal
Direction
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
Pin
D10
A10
G3
G4
B5
D5
K7
E6
C6
E7
B8
Pin Description (Cont.)
Handshake Failure - This line pulses low if the allowable time
for DTAK response has been exceeded during the
ASIC/subsystem data transfer handshaking.
Last Command/Command Word Enable - This line pulses low
when servicing a valid and legal mode command to transmit last
command. When in RT mode this line must not be used to
enable data from the subsystem. This line also pulses low, when
in the Bus Control mode, when a command word is required for
transmission.
Status Enable/Status Strobe - This line pulses low to enable
the status word onto the internal highway for transmission.
When in RT mode this line must not be used to enable data
from the subsystem. This line also pulses high, when in the Bus
Control mode, to strobe received status words into the
subsystem. When PASMON is true this line pulses high for
Command and Status words.
Status Update - When held low, causes TF or SSF to appear in
Status Word response to Transmit Status or Transmit Last Com-
mand issued immediately after fault occurrence
Built In Test Enable/Receive Mode Data Strobe - This line
pulses low when servicing a valid and legal mode command to
transmit the internal BIT word. This signal is for information only
and must not be used to enable data from the subsystem. This
line also pulses high when in the Bus Control mode when mode
data is received to be passed to the subsystem and when data
is passed to the subsystem during PASMON.
Data Word Sync - This line goes low if a data word sync and
two Manchester biphase bits are valid.
Enable - When held low, enables Bit Decode, Next Status, and
Status Update program lines.
Command Word Sync - This line goes low if a command word
sync and two Manchester biphase bits are valid.
No Data Required - This line goes low if the encoder transmit
buffer is full i.e. another word is going to be transmitted. This
signal is for information only and must not be used to enable
data from the subsystem.
Next Status - When held low, causes TF or SSF to appear in
very next Status Word after fault occurrence (except for
Transmit Status or Transmit Last Command).
Master Reset - A logic low on this input (100 nSec minimum)
will reset the interface.
14
Signal Description
SCD3492 REV B 6/26/01 Plainview NY [phone]