Texas Instruments CPG004DRV88 EVM Series, Руководство пользователя, Страница: 3 / 21

(a)
1
From Pot
From DAC
(b) (c)
2
5 6
1 2 1 2
5 6 5 6
From AVREF
To configure the BVREF select jumper:
(a) Use position JP1-1:2 to select the respective variable resistance potentiometer.
(b) Use position JP1-2:3 to select the MSP430 DAC functionality.
(c) Use position JP1-5:6 to select AVREF as reference voltage source. This jumper
should not be left open as lack of a reference voltage on the device will minimize
current sourcing into the respective H Bridge, resulting in very poor motion or
no motion at all.
(a) (b)
1 1
From Pot
From DAC
To configure the AVREF select jumper:
(a) Use position JP2-1:2 to select the MSP430 DAC output (default).
(b) Use position JP2-2:3 to select the respective variable resistance
potentiometer. This jumper should not be left open as lack of
reference voltage on the device will minimize current sourcing
into the respective H Bridge, resulting in very poor motion or
no motion at all.
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Block Diagram
1.3 Jumpers
There are only three jumpers the user must configure as detailed below. Default configuration assumes
microcontroller resources are being utilized. As an alternative, a variable resistance is provided on the
opposing jumper configuration.
1.3.1 AVREF Select Jumper (JP2)
Figure 1. AVREF Select Jumper Configuration
1.3.2 BVREF Select Jumper (JP1)
Figure 2. BVREF Select Jumper Configuration
3 SLVU361B – April 2010 – Revised October 2013 CPG004_DRV88xx Evaluation Modules
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