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2 microcontroller connections to the 41210 bridge, Microcontroller connections to the 41210 bridge, 41210 bridge microcontroller block diagram – Intel 41210 User Manual

Page 11: 41210 bridge microcontroller connections

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Intel® 41210 Serial to Parallel PCI Bridge Design Guide

11

Introduction

2.4.2

Microcontroller Connections to the 41210 Bridge

The following diagram shows the SMB interface from the 41210 Bridge to the microcontroller.

Figure 1. 41210 Bridge Microcontroller Block Diagram

B2707-01

Configuration

Register

Address Space

Intel

fi

41210 Bridge

SMBus 2.0

Configuration

Register

Data

Microcontroller

Figure 2. 41210 Bridge Microcontroller Connections

B2708-01

Intel

fi

41210

Bridge

SMDAT

3.3 V

SMBDAT

SMBCLK

CFGRETRY

CFG_RST_N

PIC16F876A

SDI / SDA

SCK / SCL

RC1

RBO / INT

OSC2 / CLKOUT

OSC1 / CLKIN

20 MHz

22 pF

22 pF

SMCLK

CFG_RETRY

CFG_RESET