Texas Instruments BUF08832, Руководство пользователя, Страница: 12 / 32

BUF08832EVM Hardware Overview
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Table 2 summarizes the function of the BUF08832_Test_Board jumpers. For most applications, Jumpers
2 through 5 are all set to either the INT or the EXT position.
Table 2. BUF08832_Test_Board Jumper Functions
Jumper Default Purpose
This jumper selects I
2
C AO address selection. Two
JMP1 L separate I
2
C addresses can be selected, depending
on whether JMP1 is set to high or low.
This jumper selects whether the BKSEL pin on the
BUF08832 is controlled by the manual switch
located on the BUF08832_Test_Board or whether
JMP2 INT the BKSEL can be controlled by an external source
connected to terminal T3. The default INT position
allows the BKSEL pin to be controlled by the
manual switch.
This jumper selects whether the VSD pin on the
BUF08832 is connected to the VDUT signal
generated from the USB_DIG_Platform or whether
JMP3 INT digital supply pin is connected to terminal T1,
allowing for an external supply to power the digital
circuitry. The default INT position connects the VSD
pin to the VDUT control signal.
This jumper selects whether the SCL pin on the
BUF08832 is connected to the I
2
C_SCK_ISO signal
generated from the USB_DIG_Platform or whether
JMP4, INT the SCL pin is connected to terminal T2 allowing for
an external source to control the I
2
C clock line. The
default INT position connects the SCL pin to the
I
2
C_SCK_ISO control signal.
This jumper selects whether the SDA pin on the
BUF08832 is connected to the I
2
C_SDA_ISO signal
generated from the USB_DIG_Platform or whether
JMP5 INT the SDA pin is connected to terminal T2 allowing for
an external source to control the I
2
C data line. The
default INT position connects the SDA pin to the
I
2
C_SDA_ISO control signal.
12 BUF08832EVM User Guide and Software Tutorial SBOU081 – November 2009
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