Beckhoff CB4052 Manual de usuario descargar pdf (Pagina 34)

Chapter: Connectors SMBus

page 34 Beckhoff New Automation Technology CB4052

3.16 SMBus

The CB4052 can communicate with external devices via the SMBus protocol. The signals for this protocol

are available through a standard IDC socket connector with a spacing of 2.54 mm. A 3.3 volt power

supply is also available for these SMBus devices. Additionally, you can use this connector to access the

PWRBTN# and PS_ON# signals used for power control. If PWRBTN# is held low for four seconds an

unconditional hardware power-down event will occur. In the off state S5 both SMBALRT# and PWRBTN#

will generate a power-on event if asserted.

Name Description

1 3.3V 3.3 volt supply

2 CS-SMB-CLK SMBus clock

3 CS-SMB-DAT SMBus data

4 SMB-ALERT# SMBus alert

5 PWRBTN# power button

6 PS_ON# power supply on

7 GND ground

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 72 73

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Beckhoff CB4052 Manual de usuario Pagina 34