I 2 C Serial Interface Controller (I 2 C); Overview; Features; Block Diagram - Nuvoton ISD94124BYI Technical Reference Manual

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6.13 I C Serial Interface Controller (I

6.13.1 Overview

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I C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data
exchange between devices. The ISD94100 series device provides two sets of I
can function as either master or slave, provide multi-master capability, support up to 1Mbs transfer
rate.
The ISD94100 I2C module can also be used for a variety of purposes, including CRC verification,
SMBus (System Management Bus) and PMBus (Power Management Bus).

6.13.2 Features

The ISD94100 series I2C module supports the following features:

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Two I C ports

Master, Salve and Multi-master mode operation

Support High speed mode 3.4Mbps

Supports Standard mode (100 kbps), Fast mode (400 kbps) and Fast mode plus (1 Mbps)

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 I
out counter overflows

Programmable clocks allow for versatile rate control

7-bit and 10-bit addressing mode

Multiple address recognition ( four slave address with mask option)

Power-down wake-up function

Programmable setup/hold time

Bus Management (SM/PM compatible) function

6.13.3 Block Diagram

The block diagram of I
Sep 9, 2019
ISD94100 Series Technical Reference Manual
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C)
2
C controller is shown below.
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C interrupt if the I C bus hangs up and timer-
2 C controller which
Rev1.09