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SAM4E датащи(PDF) 17 Page - ATMEL Corporation

номер детали SAM4E
подробное описание детали  SAM4E Microcontrollers
PDF  40 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

SAM4E датащи(HTML) 17 Page - ATMEL Corporation

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SAM4E-EK Evaluation Kit [USER GUIDE]
Atmel-42067C-SAM4E-EK_UserGuide_022016
1
7
17
Figure 4-13.
JTAG Interface
4.3.14 Audio Interface
The Atmel SAM4E-EK evaluation kit supports mono/stereo audio driven by a TPA0223 audio amplifier
connected to two DAC channels of the microcontroller.
The TPA0223 is a 2W mono Bridge-Tied-Load (BTL) amplifier designed to drive speakers with as low as
4Ω impedance. The amplifier can be reconfigured on the fly to drive two stereo Single-Ended (SE) signals
into head phones.
Figure 4-14.
Headphone Output
Using a readily available 1/8-in. (3.5mm) stereo headphone jack, the control switch (pin4 and pin5 in J24)
is closed when no plug is inserted. When closed, a 100kΩ/1kΩ divider pulls the ST/MN input low. When a
jack plug is inserted, the 1kΩ resistor is disconnected and the ST/MN input is pulled high. The mono
speaker (J22 connector) is also physically disconnected from the RO/MO+ output so that no sound is
heard from the speaker while the headphones are inserted.
When works as stereo mode make sure J25, J27, and J26 are disconnected.



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