Software Control
2.2.1
Top-Level GUI Controls
shows the top-level view of the GUI which contains the block diagram of the ADS54J54. Controls
for the ADS54J54 are under the
ADS54J54
tab while controls for the LMK04828 are under the
LMK04828
tab. The
Low Level View
tab allows detailed bit-level access to all SPI registers of both the ADS54J54 and
LMK04828. At all times, the status of the USB link between the PC and the EVM is indicated by an LED
indicator. A green indicator means the USB link is active. A red LED indicates the USB link must be reset.
The
Reconnect FTDI
button will attempt to reestablish the USB link between the PC and the EVM. For the
GUI to operate correctly, it is important that the ADS54J54 and LMK04828 each be reset by clicking on
the respective reset control. The reset control will reset all the internal SPI registers to their default power-
on state, and then set the device in 4-wire SPI mode of operation. The USB interface on the EVM requires
the ADS54J54 and LMK04828 to be in 4-wire SPI mode for the SPI readback function to work. If power is
disrupted to the EVM at any time, a reset for each device is required.
Figure 2. Top-Level Block Diagram Window of the ADS54J54 GUI
5
SLAU616A – January 2015 – Revised January 2016
ADS54J54 Evaluation Module
Copyright © 2015–2016, Texas Instruments Incorporated
