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

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ADSP2192-12 EZ-KIT Lite Evaluation System Manual
4-7
NOTE: If this switch is asserted while using the EZ-KIT Lite in PCI mode, communication to the
Monitor program will be lost. This is because the DSP will restart by executing from the internal
ROM. This, in effect, causes the ADSP2192-12 to re-negotiate with the PCI bus.
You can perform an ADSP2192-12 DSP chip reset using the monitor program. This allows you to
reset the DSP without losing PCI communication. Refer to software section (Section 3) of this
manual for more details.
4.6.2 GPIO Interrupts (SW2, SW3)
The GPIO2 (SW2) and GPIO3 (SW3) are located at the top-center of the EZ-KIT Lite board. They
allow you to send a manual pushbutton interrupt to the ADSP2192-12 DSP. If the pushbuttons are
asserted, the respective GPIO2 and GPIO3 signals change from a logic “1” (high) to a logic “0”
(low).
4.6.3 Communication Mode (SW4)
The Communication Mode switch (SW4), located at the top center of the EZ-KIT Lite board, is used
to choose between PCI, USB, or Stand-alone operation. The switch also allows the circuitry on the
board to be powered by the PCI BUS or a user-provided external power supply. The external power
supply is required for both the USB and the Stand-alone operation. For more information on the
power supply requirements, refer to section 4.4 of this manual.
MODE SW4 Position Actual SW4 Pin Connection
*PCI Right Pin 2 => Pin 1
Pin 5 => Pin 4
Pin 8 => Pin 7
Pin 11 => Pin 10
Stand Alone Left Pin 2 => Pin 3
Pin 5 => Pin 6
Pin 8 => Pin 9
Pin 11 => Pin 12
USB Left Pin 2 => Pin 3
Pin 5 => Pin 6
Pin 8 => Pin 9
Pin 11 => Pin 12
* Denotes default setting.
Table 4-7: Communication Mode Switch Settings
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