Smb/I2C - Beckhoff CB3053 Manual

SMB/I2C

4.16 SMB/I2C

The CB3053 can communicate with external devices via the SMBus protocol or the I2C protocol. The
signals for these protocols are available through a 2x5 pin connector (JST® B10B-PHDSSLFSN, mating
connector: PHDR-10VS). The SMBus signals are processed by the SCH chip (Intel® US15W), the I2C
signals are processed by the SIO1 unit (Winbond® W83627).
Pinout SMBus/I2C connector:
Description
3.3 volt supply
SMBus clock
SMBus alarm
I2C bus clock
5 volt supply
Beckhoff New Automation Technology CB3053
Name Pin
3.3V 1
SMBCLK 2
SMBALRT# 3
I2CLK 4
VCC 5
Name
6 GND
7 SMBDAT
8 SVCC
9 I2DAT
10 GND
Chapter: Connectors
Description
ground
SMBus data
standby supply 5V
I2C bus data
ground
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