Datasheet

Adjustable
Regulator
TUSB3210
8052 Cm
with USB Interface
and UART
3.3V
Regulator
8K byte
EEPROM
V
CC
(2.7V to 5.5V)
V Cm
S
3.3V
V
USB
5V
V
DUT
(2.7V to 5.5V)
Reset Button and
Power-On Reset
Buffers and
Latches
Calibration
EEPROM
USB DIG Platform
Power
Switching
Switched
Power
External
Power
(6V dc)
USB Bus
from
Computer
I C/SPI
2
Control and
Measure Bits
www.ti.com BUF16821EVM-USB Software
2.2.1 Theory of Operation for USB_DIG_Platform
Figure 4 shows the block diagram for the USB_DIG_Platform. This platform is a general-purpose data
acquisition system that is used on several different Texas Instruments evaluation modules. The details of
its operation are included in a separate document, SBOU058 (available for download at www.ti.com). The
block diagram shown in Figure 4 gives a brief overview of the platform. The primary control device on the
USB_DIG_Platform is the TUSB3210.
Figure 4. USB_DIG_Platform Block Diagram
3 BUF16821EVM-USB Software
The BUF16821EVM-USB hardware overview involves connecting the two PCBs of the EVM together,
applying power, connecting the USB cable, and setting the jumpers. This section presents the details of
this procedure.
3.1 Electrostatic Discharge Warning
CAUTION
Many of the components on the BUF16821EVM-USB are susceptible to
damage by electrostatic discharge (ESD). Customers are advised to observe
proper ESD handling precautions when unpacking and handling the EVM,
including the use of a grounded wrist strap at an approved ESD workstation.
7
SBOU106– May 2011 BUF16821EVM-USB Evaluation Board and Software Tutorial
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