SERIES I/O SERVER MODULE
MIL-STD-1553A/B Bus Interface Module
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Acromag, Inc. Tel:248-295-0310 Fax:248-624-9234 Email:[email protected]
www.acromag.com
MODELS
Table 1 IOS-57x Series Models
Model
Number of
Channels
Operating Temperature
Range
1
IOS-571
1
-40 to 85 C
IOS-572
2
-40 to 85 C
Notes (Table 1):
1. The maximum operating temperature depends on the transmitter duty cycle, the
1553 bus coupling method, and the heat dissipated by other IOS modules installed
in the I/O Server. The systems engineer must ensure that the ball temperature of
the micro ACE devices does not exceed 85 C. Our testing has shown that the
maximum ball temperature is reached under the following conditions: Two IOS-572
modules installed in an I/O Server, transformer coupled to the 1553 bus, with each
of the channels transmitting at 25% duty cycle, I/O Server ambient 70 C still air.
Four IOS-572 modules may be installed in an I/O Server if all channels are
operating in monitor mode (transmitter duty cycle is 0%).
KEY FEATURES
One or two dual redundant MIL-STD-1553A/B channels
Each channel can be independently programmed for Bus Controller, Remote
Terminal, or Bus Monitor operation
Transformer (long stub) or Direct coupled (short stub) bus connection
64K words RAM per channel
External Time-Tag clock input and output
Software initiated RAM built in self test
RT address input for each channel
VITA 4 compliant
I/O SERVER MODULE INTERFACE FEATURES
Clock Speed
–
Supports an 8 or 32 MHz bus clock speed.
Local ID
- Each IOS module has its own 8-bit ID information which is accessed via data
transfers in the "ID" space.
16-bit & 8-bit I/O
– Control and status register Read/Write is performed through 16 bit or 8
bit data transfer cycles in the IOS module I/O space. The u-ACE controllers are located in
memory space and are accessed with 16-bit data transfer cycles.
High Speed
- Access times for all data transfer cycles are described in terms of "wait"
states. Wait states are minimized for all read and write operations (see specifications for
detailed information).
