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BUF20800/20820EVM Hardware Overview
3.6
BUF20800/20820EVM Default Jumper Settings
shows the default jumpers configuration for the BUF20800/20820EVM. In general, the jumper
settings of the USB_DIG_Platform will not need to be changed. You may want to change some of the
jumpers on the BUF20800/20820EVM board to match your specific configuration. For instance, you may
wish to set a specific I
2
C address on the DUT.
Figure 9. BUF20800/20820EVM Default Jumper Settings
Jumpers 1 through 4 on the BUF20800/20820EVM are all typically set to the same position. When set to
the INT position, the signals from the digital supply (JMP1) and the digital communication lines
(JMP2-JMP4) are generated and controlled from the USB_DIG_Platform or by the onboard bank select
switch. When these jumpers are set the EXT position, the signals from JMP1-JPM4 connect to the
terminal strips T2, T3, and T4. Jumper 6 controls the I
2
C address pin for the BUF20800/20820; this jumper
can set the address for A0 to either high or low. Jumper 5 can be set to low or high to hard set the LD
signal to the BUF20800/20820 as long as JMP4 is configured correctly.
11
SBOU100 – April 2011
BUF20800/20820EVM User Guide and Software Tutorial
© 2011, Texas Instruments Incorporated
