HOLT HI-3110 User manual

AN-175 Rev. B Holt Integrated Circuits
ADK-175 User’s Guide –
HI-3110 Evaluation Board
April 2020

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REVISION HISTORY
Revision
Date
Description of Change
AN-175 Rev. New
08-30-11
Initial Release
Rev. A
01-15-13
USB to Serial, External SPI Interface and Two node
demonstration.
Rev. B
04-20-2020
Improve board schematic diagram resolution.
Update Freescale Development Tools information.
Update document to new format.

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Introduction
The Holt HI-3110 ARINC 825 CAN BUS Controller Evaluation Board can be used to evaluate some of the
features of the HI-3110 CAN Controller IC with integrated transceiver. A Freescale MC9S12XDT512
microcontroller with 512K flash and 20K RAM communicates with the HI-3110 through the SPI interface.
The board includes switches and LEDs to help navigate the operating modes and confirm data and status
information. A Serial UART port is provided to allow debug and data messages to be sent to a PC using
any terminal program such as Hyper-terminal.

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KIT CONTENTS
This Users Guide.
HI-3110 Evaluation Board
HI-3110 Data Sheet
RS-232 Serial Cable
USB to Serial Adapter
Codewarrior™ Demo Software Project
Demonstration Features
Transmit Modes for Standard and Extended Frames
Receive Modes, polled and interrupt driven
CAN bus communication using two nodes
Monitor Mode
LoopBack Mode
Sleep Mode with wake-up from Button press or CAN data
Selectable Bit Rates from 83.3KBPS - 1MBPS
Print out the CAN buffers (64) on the serial console
Print out the status registers on the serial console
Print out the Transmit History FIFOs on the serial console
Print out the Error Status registers on the serial console
Configuring the INT, STAT and GP1 and GP2 outputs
SPI clock frequency selectable from 625 KHz –20 MHz.
Test Mode for cycling GPIOs and LEDs as a board check
CAN Filters and Masks

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Demonstration Set-up
MC9S12XD
16 Bit MCU
HOLT
HI-3110 CAN
Controller
SPI (4)
GP1,GP2,STAT,INT
RS-232 Console
USB Debug Port
DB9
CAN Bus
Connector
LEDs (10)
User Push
Button
Switches (4)
Dip SWs
(4) Dip SWs (6)
Expansion
Headers
(2x14) x 2
RESET Button
CAN
Transceiver
The board requires a +5V (0.5A) power supply applied to TP1 and Gnd to TP6. There are two ways to
connect the CANL and CANH signals to the CAN Bus. The CANL and CANH Bus signals are available on
the two test points on the top right side of the board or from the DB9 connector.
Power On Reset
For normal operation ensure SW2 –4 (MRST) is in the open position otherwise the MCU will be held in
the reset state. The purpose of this MRST dip switch is to allow easy interfacing of an external MCU to
the HI-3110 such that the SPI signals from the Freescale MCU will be forced into high impedance so as
not to conflict with an external MCU. For normal operation keep this switch open and use the RESET
button to reset the MCU during testing.
For Modes 1-6 the MCU will initialize the HI-3110 and check the STATF status register for the default
0x82 value, if the status value does not match 0x82 the program will turn on the Red LED8 and halt.

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CAN BUS Bit Rate selection
The Bit Rate can be selected by configuring the 3 dip switches in SW1. The program fetches the switch
positions once after a power up.
Bit Rate Selection
S3
S2
S1
BIT RATE
0
0
0
1 MBPS
0
0
1
500 KBPS
0
1
0
250 KBPS
0
1
1
125 KBPS
1
0
0
83.3 KBPS
Mode Selection
MODE 2
MODE 1
MODE 0
MODE
0
0
0
Board Test
0
0
1
Transmit Standard Frames
0
1
0
Receive in polling mode
0
1
1
Monitor
1
0
0
Loop Back
1
0
1
Transmit Extended Frames
1
1
0
Receive in interrupt mode
1
1
1
Serial Console Commands
SW2 OPT1 switch (Receiver data frame compare)
Receiver Modes:
If OPT1 is in the open position the receiver mode will check the data frame for an incrementing 32-bit
value. If the data doesn’t match the expected value from the previous transmission it will turn on the
Red LED8 and halt.
Transmitter Modes:
If OPT1 is in the open position a 400us delay will be inserted between each transmission.

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SW2 OPT2 switch
OPT2 is also used in the receiver mode. It enables the FILTON bit(bit4) in the CTRL1 register for CAN ID
filtering. See the Receive Mode description in the software description section for more details.
Buttons1 –Button4 (SW1-SW4)
Depending on the mode these buttons will perform specific tasks.
Serial Port Configuration
The serial port is optional and provides access to additional status and data information:
Software Revision
Current Mode
CAN Frame data
CAN History FIFO data
Status Registers data
Sleep Mode status
Serial Commands Menu
A simple menu of commands is provided for resetting the HI-3110, reading and displaying the HI-3110
status registers, and a demo how to pass input strings to the program. There are provisions for
additional user code to be implemented so custom commands can be developed and easily integrated.
UART Serial Port Setup: 115200 Baud, 8 bits, No Parity, No handshaking.
A USB to Serial adapter is provided in the kit which can be used with PC’s that don’t have a serial port.
At power on reset (POR) the revision of the program will be displayed on the LEDs for two seconds in
binary format where LED1 is the LSB. After two seconds they will be turned off then LED7 will flash every
second as the main MCU “live” operating indicator. A message will also be sent to the Serial Port . For
Receive mode it will be shown as:
Holt HI 3110 Demonstration Software Revision: xx
Receive Mode polled

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Board Jumpers
JP1 - CAN BUS connector shield
JP2 - CANH 60 ohm termination.
JP3 - VDD jumper to U3 VLOGIC. Removing JP3 can be used to measure ICC.
JP4 - SPLIT termination voltage filter.
JP5 - CANL 60 ohm termination.
JP7 - VDD jumper to U3 VDD. Removing JP7 can be used to measure ICC or to operate the
logic section of the HI-3110 at 3.3V while keeping 5V on the VDD pin for the integrated
CAN transceiver. See the HI-3110 Split Voltage Operation section below.
Using the HI-3110 with an external MCU or FPGA
To use the HI-3110 with an external MCU or FPGA close the RESET DIP switch 4 in SW2. This will hold the
Freescale MCU in the reset state and keep the SPI signals from the Freescale MCU in tri-state. This
allows the SPI signals to be driven by an external source without having to remove the Freescale MCU
on the board. The SPI signals to the HI-3110 are available on both J8 header rows or J5 and J6. Refer to
the schematic for the pin assignments. Connect MR, nCS, SO, SI, SCK and optionally STAT and INT to the
external MCU or FPGA. The HI-3110 supports either 5V or 3.3V logic levels depending if 5V or 3.3V is
applied to the Vlogic pin. 5V is needed on the VDD pin for the transceiver outputs to meet ISO-11898-5
voltage levels.
HI-3110 Board Dual Voltage Configuration
It is possible to run the digital logic of the HI-3110 on 3.3V while keeping 5V on the integrated CAN
transceiver on the VDD pin-11. The Freescale MC9S12XD family can operate at either 3.3V or 5V so this
microcontroller can be used to demonstrate this. To setup the evaluation board for dual voltage
operation follow the simple setup instructions below:
Setup instructions:
1) Remove JP7 and connect the right side of the JP7 jumper post to TP2 VDD2. Do not re-
install the jumper shunt.
2) Connect a 3.3V power supply to the board TP1 VDD.
3) Connect a 5V power supply to the board TP2 VDD2.

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Users Guide
Mode-0: Board Test
In this mode the MCU performs a walking pattern on the GPIO pins and cycles turning on all the LEDs.
See the boardtest.c module for details and other options available.
Mode-1: Transmit Mode Standard Frames
This transmits a standard CAN frame with an incrementing 32-bit value in the first 4 bytes of the data –
field, the last four bytes will be 00. After RESET press the Button-1 to start the transmissions. A portion
of the data field will be copied to the LED1-LED4’s. They can be seen counting in this mode.
Press Button-1 to stop transmitting and print out the status registers on the serial console.
Press Button-2 to pause the transmission. Press Button-2 again to transmit one frame again.
Press Button-3 to print out the Transmit History FIFO contents on the serial console.
Press Button-4 to resume transmissions.
OPT1 switch= open, Inserts a 400us delay before each transmission.
Mode-2 Receive Mode using Polling method
To use Receive mode with an external node transmitter, set the OPT1 switch to the closed position to
disable the Receiver data frame compare feature. This will allow any data frame to be accepted.
LED1-4 will reflect the lower nibble of byte3 of the data-field.
CAN Error Detection
While receiving frames if there are any errors detected in the HI-3110 registers, TEC, REC or ERR, they
will be automatically logged on the Serial Port.
For example if ERR has a 01 value it would be shown as: ERR: 01. The other two errors will be shown
similarly.
Button-1 –Stop receiving CAN messages and print the last 64 CAN frames and the status registers on the
serial console. Press Button-4 to resume receiving CAN messages. See a partial listing of this output
below which shows the last two frames.
CAN Frame 62: 00 77 60 47 20 00 00 08 00 00 22 28 04 05 06 07
Standard Filter:0 TTU:77 TTL:60 BaseID:239
[r0,r1,x,x][DLC]: 08 Data-Field: 00 00 22 28 04 05 06 07

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CAN Frame 63: 00 78 61 47 20 00 00 08 00 00 22 29 04 05 06 07
Standard Filter:0 TTU:78 TTL:61 BaseID:239
[r0,r1,x,x][DLC]: 08 Data-Field: 00 00 22 29 04 05 06 07
Button-2 –Stop receiving CAN messages and print the HI-3110 status registers. Press Button-4 to
resume CAN messages.
CTR0 = 00
CTR1 = 00
BTR0 = 40
BTR1 = A7
TEC = 00
REC = 00
MESSTAT=00
STATF = 00
ERR = D8
INTF = 00
INTE = 82
STATFE= 00
GPINE = 00
TIMERUB=98
TIMERLB=95
Button-3 –Put the HI-3110 into Sleep Mode. Press Button-4 or send CAN messages in Sleep mode to
terminate and re-enter Normal mode. A message on the serial console will indicate the Sleep Mode and
the source to the wake-up event.
Holt HI-3110 Demonstration Software Revision: 09
Receive Mode polled
Entering SLEEP Mode
Press Button-4 to wake-up.
Normal Mode Resumed from Sleep Mode
Entering SLEEP Mode
Press Button-4 to wake-up.
Normal Mode Resumed from Monitor Mode
REC: 01 ERR: 04
The last line shows a BUS error that was caused when the HI-3110 was in Sleep Mode and woke up due
to a CAN message coming in.