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UM1935
Hardware Layout and configuration
76
Note:
I
2
C
address of WM8994ECS/R is 0b0011010.
5.7
USB OTG1 FS
STM32479I-EVAL evaluation board supports USB OTG1 full speed communication via a
USB Micro-AB connector (CN13) and USB power switch (U11) connected to V
BUS
. The
evaluation board can be powered by this USB connection at 5V DC with 500mA current
limitation.
A green LED LD7 will be lit in one of these cases:
Power switch (U11) is ON and STM32479I-EVAL works as an USB host
V
BUS
is powered by another USB host when STM32479I-EVAL evaluation board works
as an USB device.
Red LED LD8 will be lit when over-current occurs (I
VBUS
> 500 mA).
Note:
JP9 must be removed when using USB OTG FS as mentioned in
Table 9: CAN related
jumpers
.
JP6
PD6 is as FMC_NWAIT signal when JP6 is set as shown to the right (Default
setting):
PD6 is connected to digital microphone as I
2
S data signal when JP6 is set as shown
to the right (Also need to set JP17 together according to this table):
JP16
Digital microphone power source is connected to +3.3V power when JP16 is set as
shown to the right (Default setting):
Digital microphone power source is connected to MICBIAS1 from WM8994ECS/R
when JP16 is set as shown to the right:
Table 6. Audio related jumpers (continued)
Jumper
Description
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