Evaluation Kit Hardware
Table 4-5. Audio Input Configuration
4.4.3
Test Points
JP17
OFF
OFF
ON
ON
JP19
OFF
ON
OFF
ON
MONO-STEREO INPUT
PIN test point (TP12)
Left-in only
Right-in only
Sum of Left-in and Right-in
Some test points have been placed on the SAM3S-EK board for the verification of important signals .
Table 4-6. Test Points
4.4.4
Designation
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
Solder Drops
Part
Ring Hook
Ring Hook
Ring Hook
Ring Hook
Pad
Pad
Pad
Pad
Pad
Ring Hook
Ring Hook
Pad
Description
GND
GND
GND
GND
UART TXD
UART RXD
LCD Backlight driver anode
Aux ADC input for Touch Screen controller
Aux ADC input for Touch Screen controller
+5V
+3V3
Optional Audio PA input
There are two solder drops designed on the SAM3S-EK for isolation.
Table 4-7. Solder Drops
Designation
SD1
SD2
Default Setting
OPEN
CLOSE
Feature
Isolation of DAC output from shared channel (PB14)
Connects PB14 to the AUDIO_OUTL channel
4.4.5
4-20
Assigned PIO Lines, Disconnection Possibility
As pointed out in some previous interface description, 0 Ohm resistors have been inserted on the path of
the receiver PIO lines of the SAM3S-EK. These are the PIO lines connected to an external driver on the
board. The 0 Ohm resistors allow disconnecting each of these for custom usage (through PIO expansion
connectors for example). This feature gives the user an added level of versatility for prototyping a system
of his own. See the table below.
SAM3S-EK Development Board User Guide
11031C–ATARM–30-Mar-11
相关PDF资料
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