DI2CM Core connection to global I2C bus

Application note v4.04 Connection DI2CM Core to global I2C bus This document describes how to connect an DI2CM Core into global I2C Bus, in systems operat‐
ing in I2C Standard/Fast mode as well as in I2C High Speed Mode. VDD
RP
RP
SDA
SCL
RS
RS
sdai
RS
RS
sda
sdao
open drain
Input Schmidt gates
are recommended
especially in HighSpeed mode
DI2CM
scli
Slave
device
scl
sclo
sclhs
ASIC/FPGA chip
OR
tri-state buffer used
as a pull-up in
High Speed mode
and as Open-drain
Input Schmidt gates are recommended especially in High‐Speed I2C mode. They prevent incidental erro‐
neous behavior caused by slow rising edges on input SCL and SDA lines. Copyright© 1999‐2011 DCD – Digital Core Design. All Rights Reserved -1- All trademarks mentioned in this document are trademarks of their respective owners. 
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