ISSI IS31IO8972 EVB User Manual

IS31IO8972 EVB user guide

IS31IO

8972

EVB user

guide

Rev.A

2019-3-14

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Rev. A, 14/03/2019

IS31IO8972 EVB user guide

GENERAL DESCRIPTION

FEATURES

The IS31IO8972 is a stand-alone Controller Area
Network (CAN) protocol controller with the embedded
CAN transceiver. It supports CAN 2.0B standard and the
maximal bit rate is 1 Mb/s. It is capable of transmitting
and receiving standard and extended message frames. It
includes eight independent transmit buffers with
auto-dispatch function and 1024-byte receive FIFO with
12 ID acceptance filtering and message management.
The MCU communication is implemented via an industry
standard Serial Peripheral Interface (SPI) and I2C bus.

 Single + 5V power supply
 Maximal operating clock up to 24MHz
 Built-in one CAN controller according to CAN

protocol version 2.0B.

 0~8 byte message length
 Standard and extended data frames
 Programmable bit rate up to 1Mb/s
 Support for remote frames
 1024 Bytes receive FIFO
 12 full acceptance filters
 8 full filter masks
 8 transmit buffers with abort feature
 Auto-dispatch function for each transmit buffer
 Listen mode
 Loop-back mode for self-test operation

 Built-in CAN transceiver full support CAN v2.0B

specification

 Built-in IOSC up to 16MHz
 Hardware interface
 High speed SPI interface up to 3Mb/s bit rate
 Supports SPI mode 0,0 and 1,1
 High speed Slave I2C interface up to 2Mb/s bit

rate

 Interrupt output pin with selectable enables

 Low power CMOS technology

 50mA active current typical
 1mA standby current

 External wake-up by SPI/ I2C and CAN receiver
 Industrial operating temperature range (-40°C ~

+125°C)

 20-pin SSOP packages
 RoHS compliance

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Rev. A, 14/03/2019

IS31IO8972 EVB user guide

ORDERING INFORMATION

Operating temperature -40°C to 125°C

Order Part No. Package QTY

IS31IO8972-SALS4 SSOP-20, Lead-free 75/Tube

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Rev. A, 14/03/2019

IS31IO8972 EVB user guide

Using SPI Mode

Connections to host MCU: CSn, SI, SO, CLK

Figure 1: Jumper configuration for SPI Mode

Using IIC Mode

Connections to host MCU: CLK(as SCL), SO(as
SDA); Slave I2C Address to be configured as the
following table.

Figure 2: Slave I2C Address configuration table

Figure 3: Jumper configuration for IIC Mode

ATPG Mode, PHY Mode

Are both test modes for internal testing purpose only.

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Rev. A, 14/03/2019

IS31IO8972 EVB user guide

Figure 4: Evaluation Board Schematic

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Rev. A, 14/03/2019