ZLUSBEVAL1Z データシートの表示（PDF） - Intersil

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ZLUSBEVAL1Z

USB to SMBus Reference Design

Intersil 

Description

The USB to SMBusTM Interface board allows

communication between a Zilker Labs

Digital-DC™ evaluation board and a PC. This

interface board has been designed to bridge

PMBus commands from a PC application

program to the SMBus. The PMBus command

set is used to configure a Digital-DC device as

well as monitor the power supply. PMBusTM

commands are accessed using the Zilker Labs

interface software from a PC running Microsoft

Windows. Refer to AN13 – PMBus Command

Set for more information on PMBus commands.

The USB to SMBus interface board is used by

connecting the SMBus interface connector

directly to a Zilker Labs evaluation board. The

SMBus connector is found on the lower left-

hand side of each evaluation board. Refer to the

Zilker Labs’ product evaluation board quick

start guide and product data sheet for more

information.

Features

• SMBus control via USB

• SMBus 2.0 and I2C 2.1 compatible

• PMBus compliant

• Self powered from USB

• Pre-installed firmware

• Provides SMBus reference rail

Applications

This board has been designed to operate for the

following conditions:

• Interface to Digital-DC EVBs

• fSMBus = 100 kHz

• Temperature range: 0°C to +70°C

USB

Conn

Figure 1. USB to SMBus Interface

USB

to

UART

MCU

UART to

SMBus

Figure 2. Block Diagram

SMBus

Conn

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