Jumpers
2-18
ADSP-BF518F EZ-Board Evaluation System Manual
OTP Flag Enable Jumper (JP14)
The OTP flag enable jumper (
JP14
) controls the precise 7V OTP voltage
regulator. When installed,
JP14
allows OTP writes.
JP14
must be installed for OTP writes to be successful. The nominal 2.5V
for OTP is temporarily raised to 7V when
PH3
is set high. Care must be
taken when using the
OTP_FLAG
signal in order to avoid driving 7V for an
extended amount of time.
a
There is a limited amount of time 7V can be applied to the proces-
sor’s OTP interface. Violating the specifications listed in the
ADSP-BF512/ADSP-BF514/ADSP-BF516/ADSP-BF518 Blackfin
Embedded Processor
data sheet can damage the processor.
Configured properly,
JP14
connects the processor’s
PH3
flag pin to the
shut-down pin of the ADP1611 switching converter. Refer to the
ADSP-BF51x Blackfin Processor Hardware Reference Manual
and the
ADSP-BF512/ADSP-BF514/ADSP-BF516/ADSP-BF518 Blackfin Embed-
ded Processor
data sheet for more information about OTP writes.
MIC Select Jumper (JP15)
The microphone select jumper (
JP15
) connects the
MICBIAS
signal to the
MICIN
signal (
JP15
on positions 1&2) or connects the
MICBIAS
signal to
the 3.5 mm connector
J5
(
JP15
on positions 2&3). By default,
JP15
is
installed on positions 2&3.
SPI FLASH CS Enable Jumper (JP16)
The SPI flash CS enable jumper (
JP16
) connects the
SPI0_SSEL2
signal to
the SPI flash. When installing
JP16
, position 3 of
SW3
needs to be turned
OFF
since the
SPI0_SSEL2
signal is shared with the
~AMS3
signal connected
