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Chapter: Connectors SMB/I2C

page 34 Beckhoff New Automation Technology CB3052

3.18 SMB/I2C

The CB3052 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

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 77 78

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Beckhoff CB3052 Manual do Utilizador Página 34