MSP430F5528
Microcontroller
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
T
o
C
o
m
p
u
te
r
a
n
d
Po
w
e
r
Su
p
p
lie
s
+3.3 V
USB +5.0 V
AMC7812EVM Hardware Setup
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 AMC7812 device) connects to the I/O interface of the
platform. During digital I/O transactions, the platform obtains information from the AMC7812 device and
sends it to the host PC for interpretation.
shows a block diagram of the platform.
Figure 3. SDM-USB-DIG Platform Block Diagram
6
AMC7812EVM-PDK User’s Guide
SBAU177D – September 2010 – Revised August 2014
Copyright © 2010–2014, Texas Instruments Incorporated
