Circuit Implementations

10.2.1SM Bus

The SMBus interface does not have configuration registers. The SMBus address is set by the states of pins SMBUS[5] and SMBUS [3:1] when PERST# is asserted as described in Table 17.

Table 17. SMBUs Address Configuration

Bit

Value

 

 

7

1

 

 

6

1

 

 

5

SMBUS[5]

 

 

4

0

 

 

3

SMBUS[3]

 

 

2

SMBUS[2]

 

 

1

SMBUS[1]

 

 

Refer to Section 2.4 for details on how to use the SMBus to initialize 41210 Bridge registers with a microcontroller.

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Intel® 41210 Serial to Parallel PCI Bridge Design Guide

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Intel 41210 manual SM Bus, SMBUs Address Configuration, Bit Value