ADSP-BF518F EZ-Board Evaluation System Manual
2-9
ADSP-BF518F EZ-Board Hardware Reference
Flash Enable Switch (SW3)
The flash enable switch (
SW3
) disconnects the
~AMSx
signals from parallel
flash memory (
U5
) and allows other devices to utilize the signals via the
expansion interface II. For each switch listed in
OFF
, the size of available flash memory is reduced by 1 MB.
~AMS3
is shared
with
~SPI0_SEL2
of the external SPI flash. When using the external SPI
flash, the available size for parallel flash is 3 MB.
SPORT1 Enable Switch (SW4)
The
SPORT1
enable switch (
SW4
) connects the
SPORT1
interface of the pro-
cessor to the ADC7266 (
U2
) device. When the
SPORT1
interface is used on
the expansion interface II, turn
SW4
all
OFF
.
SW4
is set to all
OFF
by default.
Table 2-5. Push Button Enable Switch (SW2)
SW2 Position (Default)
From
To
Function
1 (
ON
)
Push button 1 (
SW12
)
Processor
(
U12
,
PH0
)
ON
(
PB1
)
OFF
(
ADC
DR1PRI
, eMMC,
expansion interface II)
2 (
ON
)
Push button 2 (
SW13
)
Processor
(
U12
,
PH1
)
ON
(
PB2
)
OFF
(
ADC
RFS1
, eMMC,
expansion interface II)
Table 2-6. Flash Enable Switch (SW3)
SW3 Switch Position (Default)
Processor Signal
1 (
ON
)
~AMS0
2 (
ON
)
~AMS1
3 (
ON
)
~AMS2
4 (
ON
)
~AMS3
