ADSP-BF526 EZ-Board Evaluation System Manual
2-21
ADSP-BF526 EZ-Board Hardware Reference
information about the power saving capabilities of the EZ-Board. By
default,
JP5
is installed on positions 1 and 2.
MIC Select Jumper (JP6)
The microphone select jumper (
JP6
) connects the
MICBIAS
signal to the
MICIN
signal (
JP6
on positions 1and 2) or connects the
MICBIAS
signal to
the 3.5 mm connector
J4
(
JP6
on positions 2 and 3). By default,
JP6
is
installed on positions 2 and 3.
CFG WP Jumper (JP7)
The CFG WP jumper (
JP7
) is used to write-protect block 70 of the paral-
lel flash chip. Block 70 contains 64 KB of configuration data at address
range
0x203 F0000—0x203 FFFFF
. When a jumper is installed on
JP7
, and
the parallel flash driver from Analog Devices is used, block 70 is
read-only. By default,
JP7
is installed.
EXP 5V Select Jumper (JP8)
The EXP 5V select jumper (
JP8
) selects the 5V voltage source for the
expansion interface II connectors
J1
,
P2
,
P3
, and
P4
.
JP8
must have either
no jumpers or two jumpers installed, never one or three jumpers. When
jumpers are placed on positions 1, 2 and 3, 4 of
JP8
, the 5V power rail for
the expansion interface II is sourced from the wall adaptor. When jumpers
are placed on positions 5, 6 and 7, 8 of
JP8
, 5V is sourced by the boost
regulator
VR7
. By default,
JP8
is installed on positions 1, 2 and 3, 4.
VR7 Enable Jumper (JP9)
The
VR7
enable jumper (
JP9
) controls the shut-down pin of the ADP1611
boost regulator, which is a 5V source for the expansion interface II. When
installed,
JP9
disables
VR7
. Install
JP9
when using positions 1,2 and 3,4 of
JP8
because the 5V source for the expansion interface II is the wall
