ADSP-BF707 EZ-KIT Lite Evaluation System Manual
2-17
ADSP-BF707 EZ-KIT Lite Hardware Reference
Boot Mode Select Switch (SW1)
The rotary switch (
SW1
) determines the boot mode of the processor.
shows the available boot mode settings. By default, the
ADSP-BF707 processor boots from the internal SPI flash memory.
Reset Push Button (SW2)
The reset push button (
SW2
) resets the following ICs: processor (
U1
),
GPIO extender (
U39
), and GPIO extender (
U38
). The reset also is con-
nected to the expansion interface via the
SYS_HWRST
signal.
GPIO Push Buttons (SW3-4)
The GPIO push buttons (
SW3
and
SW4
) are connected to the processor’s
signals
PA_02/SPI1_MOSI/TRACE0_D05/SMC0_AMS1
and
PB_07/EPPI0_D00/
SPT0_BD1/SPI0_D3/SMC0_D00/SYS_WAKE0
, respectively. The signals are con-
nected by default. A monostable pulse generator (one-shot,
U49
) on push
button 2 shortens the wake pulse, allowing the processor to return to low
power mode sooner.
Table 2-10. Boot Mode Select Switch (SW1)
SW1 Position
Processor Boot Mode
0
No Boot – Idle
1
SPI master boot (SP12). Default boot mode.
2
SPI slave boot (SPI2)
3
UART boot (UART0)
Содержание EZ-KIT Lite ADSP-BF707
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