Texas Instruments AMC7834, Руководство пользователя, Страница: 6 / 32

MSP430F5528
uC
USB Bus
From
Computer
3.3-V
Regulator
+3.3 V
USB
+5.0 V
Level
Translators
Power
Switching
Vdut
(Hi-Z, 3.3 V or 5 V) Switched Power
I2C
SPI
GPIO
Power on
Reset
SDM-USB-DIG
T
o
T
e
s
t
B
o
a
rd
+3.3 V
USB +5.0 V
AMC7834EVM Hardware Setup
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6 SLAU608B – December 2014 – Revised May 2016
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AMC7834 Evaluation Module
2.3 Theory of Operation for SDM-USB-DIG Platform
The SDM-USB-DIG platform is a general-purpose data acquisition system that is used on select TI EVMs.
The core component of the platform is the MSP430F5528, an ultra-low power 16-bit MCU. The
microcontroller receives information from the host PC and translates it into I
2
C, SPI, or other digital I/O
patterns. The connected device (in this case, the AMC7834 device) connects to the I/O interface of the
platform. During digital I/O transactions, the platform obtains information from the AMC7834 device and
sends to the host PC for interpretation. A block diagram of the platform is shown in
Figure 3 .
Figure 3. SDM-USB-DIG Platform Block Diagram