HOLT HI-1590, MIL-STD-1553B User Manual
AN-1590 Rev. B Holt Integrated Circuits
HI-1590 1553B Dual Transceiver
with SPI Amplitude Control
Evaluation Board
April 2018
AN-1590
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REVISION HISTORY
Revision
Date
Description of Change
AN-1590 Rev. New
10-10-14
Initial Release
Rev. A
03-14-17
Reformat document to newer template.
Update schematic to correct error in wiring of J1, Bus B
connector.
Remove obsolete section on Freescale Development
Tools. New Instructions included separately with Kit.
Rev. B
04-09-18
Update schematic and BOM to include TVS hot switching
protection diodes.
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INTRODUCTION
The Holt HI-1590 Evaluation Board demonstrates features of the HI-1590 MIL-STD-1553B dual
transceiver IC. This device transmits and receives Manchester encoded 20 bit MIL-STD-1553B
serial data suitable bus transformers. Transceiver drive amplitude can be digitally adjusted from
0 to 26 Vp-p through the SPI interface. Adjustment can also be made with a 0 to 3.3VDC analog
control signal; a potentiometer is provided for this. Amplitude controls for both buses are
ganged together. In SPI mode, a low range option allows for more accurate amplitude
adjustment from 0 to 4.9 Vp-p. The board runs from a single 3.3V ±5% supply voltage. A MILSTD-1553B protocol message generator and receiver are included on the board to demonstrate
the HI-1590 features. The EVM (Evaluation Module) includes a microcontroller that generates
the SPI messages, the interface is through a terminal emulator connected to a PC through the
USB interface. The EVM is shown in the picture below:
Fig 1 – HI-1590 Evaluation Board
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This guide summarizes how to set up and running quickly.
KIT CONTENTS
This User Guide
HI-1590 Evaluation Board
Mini USB Serial Cable.
Board Block Diagram
MC9S12XD
16 Bit MCU
SPI
USB
DIP SW
(4)
DIP SW (6)
RESET Button
3.3V
Supply
RESET
Transceiver A
DB2791
TRANSFORMER
HI-1590
BUSA
Transceiver B
DB2791
TRANSFORMER
BUSB
Message A
1553B
Message
Generator
Message B
RUN
EEPROM
1
EEPROM
2
BC RT
DIP SW
(5)
DIP SW
(5)
ANALOG CONTROL
VCONT
ACTIVE
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LED Functions
REF
NAME
DEFAULT
DESCRIPTION
LED1
POWER
ON
Indicated when 3.3V power is present
LED2
ACTIVE
OFF
Flashes at the start of a 1553 message transmit sequence
Link Jumper Functions
REF
NAME
DEFAULT
DESCRIPTION
J4
LINK FOR POT
OFF
Link to use potentiometer R3 to adjust output amplitude
J5
LINK FOR SPI
ON
Link to use SPI to adjust output amplitude
J8
HOLD IN RESET
OFF
Holds the microcontroller in reset, for instance while using
an external SPI interface.
J12
BC/RT
BC
Connects memory for BC or RT messages
Wired Jumper Functions (JP)
REF
NAME
DEFAULT
DESCRIPTION
JP1
ON
Link to use on-board 70 Ω load on Bus B output
JP8
ON
Link to use on-board 70 Ω load on Bus A output
JP2, 3, 4, 5
JP4, 5 ON
Option links for transformer variants, Bus B
JP6, 7, 9, 10
JP6, 9 ON
Option links for transformer variants, Bus A
JP11
ON
Connects Bus A negative output to ground
JP12
ON
Connects Bus B negative output to ground
JP13-16
ON
Cut if using an external 1553 message generator
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Switch Functions
REF
NAME
DEFAULT
DESCRIPTION
SW1/1
VSEL
ON
Selects output control of amplitude range, using SPI.
ON = SPI control 0-24V, Low = SPI, 0-2.4V
SW1/2
TXAINH
OFF
Inhibits the transmitter output of transceiver A
SW1/3
TXBINH
OFF
Inhibits the transmitter output of transceiver B
SW1/4
RXAEN
ON
Enables the receiver of transceiver A
SW1/5
RXBEN
ON
Enables the receiver of transceiver B
SW3
RUN
Press = Starts 1553 messages
SW4
STOP
Press = Stops 1553 messages
SW5/1-5
AUTOEN etc
01101
Message loading control (leave in default)
SW6/1-6
RT1A4:0, RT1AP
000000
RT Address (only used if RT mode available)
SW7
RESET
Press to reset the microcontroller and control software
Connector Functions
REF
NAME
DESCRIPTION
J1
BUSB
1553 Bus A connection (secondary of transformer)
J2
BUSA
1553 Bus B connection (secondary of transformer)
J3/ 1,2
RXA/nRXA
Differential Logic signal from HI-1590 Bus A receive data pins
J3/ 3,4
RXB/nRXB
Differential Logic signal from HI-1590 Bus B receive data pins
J6
Not fitted
SPI interface for the EEPROMs
J7
Data connector to load 1553 messages
J9
USB
Connect to PC to send SPI commands from terminal emulator
J10
External SPI
Use to connect an external SPI for HI-1590 control
J11
Debug Header
Used for downloading microcontroller firmware
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Test Point Functions
REF
NAME
DESCRIPTION
TP1/TP2
BUSB
1553 Bus B connection (secondary of transformer)
TP4/TP6
BUSA
1553 Bus A connection (secondary of transformer)
TP3, 8,9,10
GND
Board Ground
TP5
VCONT
Connection to measure of input analog amplitude control, note that
J5 should be open. J4 should be open when inputting a voltage.
TP6
UPDATE
Test point for Update signal indicates when MIL-STD-1553B word has
been received
TP7
VSEL
This pin monitors voltage on the VSEL pin control on the output
amplitude.
High = SPI control 0-24V
Float = Analog Control
Low = SPI Control, 0-5.1V
TP3, 8, 9, 10
GND
Board Ground
TP11
3V3
VLOGIC Supply, connect power supply here
TP21
VDD
VLOGIC after supply filter
TP13
IRQ
INTERRUPT
TP14
ACTIVE
Produces pulse just before 1553 message starts, can be used to
trigger scope.
TP17/18
TXDO/RXDO
USB data.
TXA, nTXA
Connect external 1553 data here if not using the on board message
generator for BUSA. Need to cut links TXA and nTXA.
TXB, nTXB
Connect external 1553 data here if not using the on board message
generator for BUSB. Need to cut links TXB and nTXB.
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