Silicon Laboratories Si5328-EVB, Руководство пользователя

Страница: 6 / 16

S i 5 3 2 8 - E V B
6 Rev. 0.1
6.2. User Jumpers and Headers
Use the following to locate the jumpers described in Figure 4:
Figure 4. Connectors, Jumper Header Locations
The Si5328-EVB derives power from its USB connector for the MCU, CPLD, LEDs, etc. When the DUT is to be
driven with a Vdd of 3.3 V, USB power can also be used to power the entire evaluation board. For instances when
A Vdd of 2.5 V or 1.8 V is desired, the jumper plug at J19 labeled DUT_PWR should be moved from the USB
position to the EXT position. DUT power should be applied at J30, which is the green power connector located on
the bottom of the board. It is possible to run the TCXO from either 3.3 V or from DUT_PWR by installing a three-pin
jumper header at J31 and removing R64. To measure the DUT current, remove R27 and install an ammeter
between the pins of J20.
J1, J2
Ext
XAXB
J14,
status
J17,
Serial
port
J19,
DUT
Power
jumper
TCXO
Si5328
J19,
DUT
Power