BECKHOFF CB1052 User Manual
Page 44
Chapter: Connectors
Internal Connectors
page 44
Beckhoff New Automation Technology CB1052
3.4.10 SMB/I2C
The CB1052 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 chipset, the I2C signals are
processed by the SIO unit.
Pinout SMBus/I2C connector:
Description
Name
Pin
Name
Description
3.3 volt supply
3.3V
1
6
GND
ground
SMBus clock
SMBCLK
2
7
SMBDAT
SMBus data
SMBus alarm
SMBALRT# 3
8
SVCC
standby supply 5V
I2C bus clock
I2CLK
4
9
I2DAT
I2C bus data
5 volt supply
VCC
5
10
GND
ground