Microchip Technology DM160218 User Manual
Design In: Hillstar In Target Application
2013 Microchip Technology Inc.
DS40001721A-page 31
FIGURE 4-3:
MGC3130 PARAMETERIZATION CIRCUIT FOR USB BASED APPLICATIONS
Customer application
Application
Processor
For debugging and
parametetrization
purposes
USB cable
To electrodes
TS
I²C SDA
I²C SCL
Reset
MGC
3130
3130
I
2
C
client
AUREA
USB to I²C
(CDC/HID)
TABLE 4-1:
MGC3130 PARAMETERIZATION CIRCUITS COMPARISON
Parameterization Circuit
Advantages
Drawbacks
With Internal Switch
Easy Approach
Processor pins need to be
switchable to high Z
switchable to high Z
Low hardware efforts
No other clients can be
controlled during Aurea
access
controlled during Aurea
access
With External Switch
Communication to other I
2
C™
clients not interrupted
Additional hardware switch
USB Based Applications
No hardware efforts
Additional software efforts
Works if other I
2
C™ clients
connected to the bus