Texas Instruments DLP DLPC4420AEVM User Manual page 23

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Turn the switch back to the off position before connecting the USB cable to DLPC4420AEVM. The power supply
does not have to be disconnected before connecting the USB cable. Once the USB cable is connected to the
DLPC4420AEVM (and the PC), turn the switch on the DLPC4420AEVM to the on position.
3.1.4 JTAG Flash Programming
The JTAG Programmer Tool is included in the DLPC4420EVM-SW bundle, and allows a user to program
the bootloader image into the flash using the JTAG boundary scan connector if, for example, the bootloader
becomes corrupted and the board is rendered inoperable. The tool can also be used for updating the entire
firmware image. Programming the entire firmware image using this method takes a long time and is suggested to
program only the bootloader using this method. Following, the DLPC44xx GUI with a USB connection to upload
the entire firmware image. The following steps are for programming only the bootloader image.
The JTAG Programmer Tool requires the UM232H module with modifications, which is manufactured by
Future Technology Devices International Ltd (FTDI Chip), . The UM232H module can be purchased from
Digi-key with the following part number: 768-1103-ND. The driver can be downloaded from the FTDI website
(www.ftdichip.com). Select the VCP CDM WHQL Certified driver for Windows.
Make the following modifications to the UM232H and use
UM232H Reference
J1 Bus
Power Configuration
J2 Bus
Power Configuration
J2-6
J2-7
J2-8
J2-9
J2-10
J2-11
DLPU126 – DECEMBER 2023
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Figure 3-12. Splash Image Displayed on DMD
Figure 3-13
Table 3-2. Connection Details
Description
Short J1 PIN #2 and PIN # 3
Short J2 PIN #2 and PIN #3
GND
TCK
TDO1
TDI
TMS1
TRSTZ
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and Figure 3-14 as a guide.
Connection Type
SYS POWER
I/O POWER
POWER
OUTPUT
OUTPUT
INPUT
OUTPUT
OUTPUT
DLP ® Display ≥0.47-in Array 4K UHD Evaluation Module
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