ADSP-BF526 EZ-Board Evaluation System Manual
2-23
ADSP-BF526 EZ-Board Hardware Reference
UART SD Jumper (JP14)
The UART SD jumper (
JP14
) enables the power saving feature of the
ADM1385 UART line driver by controlling the driver’s shut-down pin.
When installed,
JP14
disables the transmitters and receivers of the UART
line driver. See
“Power Architecture” on page 1-30
for more information on the power saving capabil-
ities of the EZ-Board. By default,
JP14
is uninstalled.
CHG GPIO Jumper (JP15)
The CHG GPIO jumper (
JP15
) selects the flag pin of the processor to
control the ADP2291 single cell lithium ion charge rate (see
).
Note that only settings that are listed in the table are supported. For an
explanation of each setting, see
“Power Architecture” on page 1-30
JP15
is used in conjunction with the
P23
and
JP17
jumper settings. See the fol-
lowing sections for more information:
,
“CHG Control Jumper (JP17)” on page 2-24
, and
JP15
is uninstalled.
OTP Flag Enable Jumper (JP16)
The OTP flag enable jumper (
JP16
) controls the precise 7V OTP voltage
regulator (
VR9
). When installed,
JP16
allows OTP writes.
JP16
must be
used in conjunction with the
SW20
GPIO enable switch. Refer to
Enable Switch (SW20)” on page 2-16
for more information.
Table 2-12. CHG GPIO Settings
JP15 Setting
Signal
FLAG pin
Uninstalled
PUSHBUTTON1_HWAIT
Not applicable (default)
1 and 2
PUSHBUTTON1_HWAIT
PG0
3 and 4
LED1_HOSTWR#
PG11
5 and 6
LED2_HOSTACK
PG12