HI-1575
MIL-STD-1553 3.3V Dual Transceivers
with Integrated Encoder / Decoders
February 2006
DESCRIPTION
PIN CONFIGURATIONS
The HI-1575 is a low power CMOS dual transceiver with
on-chip Manchester II Encoder and dual Decoder
designed to meet the requirements of the MIL-STD-1553
specification. The part acts as a "Smart Transceiver",
allowing users to transmit and receive properly encoded
MIL-STD-1553 Command and Data words between a
16-bit host processor and dual MIL-STD-1553 data
buses.
30 -
-
RCVA
BUSA
BUSA
VDD
1
2
29 D5
28 D6
27 D7
26 GND
25 D8
24 D9
23 D10
22 D11
21 -
3
4
5
1575PCI
1575PCT
BUSB
BUSB
RCVB
REG
-
6
7
8
9
10
A single write cycle is used to transfer a word to the
HI-1575, which encodes the data, adds the selected Sync
and Parity bits, and transmits the word on the chosen
MIL-STD-1553 data bus. Complete MIL-STD-1553
messages may be transmitted by executing multiple write
cycles to the device.
40 Pin Plastic 6mm x 6mm
Chip-scale package
Activity on both MIL-STD-1553 data buses is continuously
monitored. When the HI-1575 detects a properly encoded
word, a hardware interrupt is generated and the
information is decoded and stored in one of two internal
registers, which may then be read by the host processor.
Bits in the internal Status & Mode Register indicate on
which bus the word was received and whether the word
had a Data or Command Sync.
FEATURES
RCVA - 1
24 - D5
23 - D6
22 - D7
21 - GND
20 - D8
19 - D9
18 - D10
17 - D11
!
!
!
!
Compliant to MIL-STD-1553A& B
BUSA - 2
BUSA - 3
VDD - 4
HI-1575PQI
&
HI-1575PQT
3.3V single supply operation
BUSB - 5
BUSB - 6
RCVB - 7
REG - 8
On-chip Encoder and Dual Decoder
Small footprint available in 32-pin plastic
TQFP package
!
!
Less than 0.5W maximum power dissipation
32 Pin TQFP package
6 mm x 6 mm 40-pin plastic chip-scale
package option
!
Military processing options
HOLT INTEGRATED CIRCUITS
www.holtic.com
(DS1575 Rev.B)
02/06