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7006 Schematic ( PDF Datasheet ) - Aeroflex Circuit Technology

Teilenummer 7006
Beschreibung ACT7005/7006 Single Package Solution Dual Transceiver/ Protocol/ Subsystem
Hersteller Aeroflex Circuit Technology
Logo Aeroflex Circuit Technology Logo 




Gesamt 29 Seiten
7006 Datasheet, Funktion
ACT7005/7006
Single Package Solution
Dual Transceiver, Protocol, Subsystem
Features
• Incorporates Transceivers, Protocol, and System Interface Components into a
Single Hybrid Package
• Functions as a Remote Terminal or Bus Controller
• Interfaces to µP as a Simple Peripheral Unit
• +5V Operation
CIRCUIT TECHNOLOGY
www.aeroflex.com
• Provides 2k by 16 of Double Buffered RAM Storage for Transmit and Receive
Subaddresses
• Pin Programmable for 8-bit or 16-bit Microprocessors
• Full Military (-55°C to +125°C) Temperature Range
General Description
The ACT7005/6 Series provides a complete one package interface between the MIL-STD-1553 bus and all
microprocessor systems. The hybrid provides all data buffers and control registers to function as a Bus
Controller or Remote Terminal. Control of the hybrid by the subsystem is through simple I/O port commands.
Internal hybrid logic removes all critical timing imposed on a typical subsystem, thereby simplifying the
implementation of this interface.
BUS "0"
DUAL
TX/RX
1553
PROTOCOL
BUS "1"
µP
INTERFACE
RAM
INTERRUPTS/
CONTROL
SIGNALS
S
U
B
S
Y
S
T
E
M
8/16
BIT
I/O
ACT7005 / ACT7006
Block Diagram
eroflex Circuit Technology – Data Bus Modules For The Future © SCD7005 REV B 8/2/01






7006 Datasheet, Funktion
ACT7005/7006
TX DATA CH A/B
GND
TX DATA CH A/B
0.75ZO
} C BCT Taps at N1:N3 For
Stub Coupling
(See Table)
For
A Direct
Coupling
(N1 : N2)
(See Table)
0.75ZO
TURNS RATIO
N1:N2
N1:N3
Technitrol Part #
ACT7005/7006
1:2.5
1:1.79
T-1553-45
Figure 2 – Transformer Configuration
Aeroflex Circuit Technology
6 SCD7005 REV B 8/2/01 Plainview NY (516) 694-6700

6 Page









7006 pdf, datenblatt
described below are available and are essentially
independent. Any, all, or none may be selected.
Also, reporting of faults by the subsystem requires
that SSERR be latched (not pulsed) low until the
fault is cleared.
Resetting SSF and TF on Receipt of Valid
Commands
If ENABLE is selected and the other three option
lines are held high, then the Status Word Register
will be reset on receipt of any valid command with
the exception of Transmit Status and Transmit Last
Command. Note that in this mode, the TF will never
be seen in the Status Word, and the SSF will only be
seen if SSERR is latched low. Also note that the SSF
will not be seen in response to Transmit Status or
Transmit Last Command if the preceding Status
Word was clear, regardless of actions taken on the
SSERR line after the clear status transmission.
Status Register Update at Fault Occurrence
If STATUS UPDATE is selected (held low), then the
TF or SSF will appear in response to a Transmit
Status or Transmit Last Command issued as the first
command after the fault occurs. Any other command
(except as noted in the Preserving the BIT Word
section) will reset the TF and SSF. Repeated
Transmit Status or Transmit Last Command
immediately following the fault will continue to show
the TF and/or SSF in the Status Word. Note that this
behavior may not meet the "letter-of-the-spec" as
described in MIL-STD-1553B, but is considered the
"preferred" behavior by some users.
TF and SSF Reporting in the Next Status
Word – After the Fault
If NEXT STATUS is selected (held low), then the TF
or SSF will appear in response to the very next valid
command after the fault except for Transmit Status
or Transmit Last Command. The flag(s) will be reset
on receipt of any valid command following the status
transmission with the flag(s) set except for Transmit
Status, Transmit Last Command, or as noted in the
following section on Preserving the BIT Word.
Preserving the BIT Word
In order to preserve the Transmitter Timeout Flag,
Subsystem Handshake Failure, and Loop Test
Failure Bits in the BIT Word, it is necessary to select
BIT DECODE (hold it low). This will prevent resetting
those bits if the Transmit Bit Word Mode Command
immediately follows the fault or follows a Transmit
Last Command or Transmit Status immediately
following the fault. It will also prevent resetting the TF
and SSF Bits in the Status Word. Any other valid
commands will cause those BIT Word Bits and the
Status Word Bits to be reset.
Aeroflex Circuit Technology
12
SCD7005 REV B 8/2/01 Plainview NY (516) 694-6700

12 Page





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