16 smb/i2c – BECKHOFF CB3053 User Manual
Page 33
SMB/I2C
Chapter: Connectors
Beckhoff New Automation Technology CB3053
page 33
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
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