Datasheet

Push Buttons and Switches
2-20 ADSP-BF609 EZ-KIT Lite Evaluation System Manual
IRQ/Flag Enable Switches (SW6–7)
The IRQ/flag enable switches (SW6–7) are push buttons which provide a
momentary low signal on processor signals PB10_A24_SP1D1 and PE1_
SPI1D2_EPPI0D19_SP3D0
when enabled through the software-controlled
switch.
Reset Switch (SW8)
The reset switch (SW8) is a push button which provides a reset pulse to the
ADSP-BF609 processor (U1), Ethernet PHY (U49), GPIO extenders
(
U45-47), and the expansion interface (EI3) connectors.
Rotary Encoder With Momentary Switch (SW9)
The rotary encoder (SW9) can be turned clockwise for an up count or
counter-clockwise for a down count. The encoder also features a momen-
tary switch, activated by pushing the switch towards the center of the
board, that can be used to set the counter to zero. The rotary encoder is a
two-bit quadrature (Gray code) encoder.
Table 2-13. Boot Mode Select Switch (SW2)
SW2 Position Processor Boot Mode
0Idle—no boot
1 Parallel flash boot (default)
2RSI master boot
3 SPI0 master boot
4 SPI0 slave boot
5Reserved
6 Link port 0 slave boot
7 UART0 slave boot