AX58200 datasheet(82/180 Pages) ASIX

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AX58200

EtherCAT Slave Controller SoC

I2C Serial Interface Controller (I2C)

2.23.1 Overview

I2C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data exchange between

devices. The I2C standard is a true multi-master bus including collision detection and arbitration that prevents

data corruption if two or more masters attempt to control the bus simultaneously.

There are two sets of I2C controllers which support Power-down wake-up function.

2.23.2 Features

The I2C bus uses two wires (SDA and SCL) to transfer information between devices connected to the bus. The

main features of the I2C bus include:

⚫

Supports up to three I2C ports

⚫

Master/Slave mode

⚫

Bidirectional data transfer between masters and slaves

⚫

Multi-master bus (no central master)

⚫

Supports Standard mode (100 kbps), Fast mode (400 kbps) and Fast mode plus (1 Mbps)

⚫

Arbitration between simultaneously transmitting masters without corruption of serial data on the

bus

⚫

Serial clock synchronization allow devices with different bit rates to communicate via one serial

bus

⚫

Serial clock synchronization used as a handshake mechanism to suspend and resume serial transfer

⚫

Built-in 14-bit time-out counter requesting the I2C interrupt if the I2C bus hangs up and timer-out

counter overflows

⚫

Programmable clocks allow for versatile rate control

⚫

Supports 7-bit addressing and 10-bit addressing mode

⚫

Supports multiple address recognition (four slave address with mask option)

⚫

Supports Power-down wake-up function

⚫

Supports PDMA with one buffer capability

⚫

Supports setup/hold time programmable

⚫

Supports Bus Management (SM/PM compatible) function

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