Analog Devices ADSP2192-12 EZ-KIT LITE, Руководство пользователя

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ADSP2192-12 EZ-KIT Lite Evaluation System Manual
4-2
4.3 Board Layout
4.4 Power Supplies
In PCI mode, the ADSP2192-12 EZ-KIT Lite uses the PCI bus to supply power to the board. 5V,
3.3V, and 2.5V are derived from the PCI 5V pins. The +5V analog power for the AD1885 codec is
derived from the +12V supply of the PCI Bus. This keeps the analog and digital powers isolated
from one another.
In USB or Stand -alone mode, the ADSP2192-12 EZ-KIT Lite uses the ADP3338 and ADP3339
parts to regulate the 5V, 3.3V, and 2.5V digital power and +5V analog power required by the board.
An external power supply (not provided in the EZ-KIT Lite) is required for USB mode or Stand-
alone mode. Do not use this power supply when using the EZ-KIT Lite via the PCI Interface. Below
is a more detailed description of the power connector and power supply specifications.
Figure 4-2: Layout Drawing of ADSP2192-12 EZ-KIT Lite
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