Push Button and Switch Settings
2-16
ADSP-BF526 EZ-Board Evaluation System Manual
Reset Push Button (SW18)
The reset push button (
SW18
) resets the following ICs.
• Processor (
U1
), parallel flash (
U16
), PHY (
U29
) if
SW12
position 4 is
ON
, SPI flash (
U6
)
The reset push button does not reset the following ICs.
• SDRAM (
U14
), NAND flash (
U15
)
• Audio codec (
U31
), UART1 (
U21
), voltage translators (
U3
,
U4
,
U32
,
U39
) schmitt trigger hex inverter (
U5
)
• Fuel gauge (
U38
), digipot (
U34
), battery charger (
U37
), power (
VR2—
3
,
VR5
,
VR9
,
VR10
,
U23
)
The reset push button does not reset the standalone debug agent once the
debug agent is connected to a personal computer (PC). After communica-
tion between the debug agent and PC is initialized, pushing a reset button
does not reset the USB chip on the debug agent. The only way to reset the
USB chip on the debug agent is to power down the EZ-Board.
GPIO Enable Switch (SW20)
The general-purpose input/output switch (
SW20
) disconnects the associ-
ated push buttons and LED circuits from the GPIO pins of the processor
and allows the signals to be used for other purposes. Depending on the
switch configuration, the signals can be used as push buttons,
one-time-programmable memory (OTP) flag for writing, or on-the-go
(OTG) host mode 5V (see
).
