Introduction to JESD204B Short Pattern Test
15
SLAA750 – July 2017
Copyright © 2017, Texas Instruments Incorporated
DAC38RF8x Test Modes
2.8
JESD204B Short Pattern Test Results
To read the alarm pin, scroll down and select register 0x16C. In the
Write Data
box, type the value 0000
and click the
Write Register
button. This write clears any alarms that may have been inadvertently
triggered in the setup process. Next click the
Read Register
button. If the value in the register remains a
zero, the test is passing and the configuration is correct. If the value changes to a 1, the alarm signal has
been detected and the user's setup could have issues.
Figure 19. DAC38RF8x EVM GUI Low Level View Tab Short Test Alarm Register
NOTE:
The register values in the GUI do not automatically update and can only be checked by
using the
Read Register
button. Also the short pattern test alarm must be cleared manually
between each reading using the write register tool. Disabling the short pattern test through
the short test enable register does not clear the alarm pin.
