50 lines
2.3 KiB
ReStructuredText
50 lines
2.3 KiB
ReStructuredText
=========================
|
|
ON Semiconductor LC823450
|
|
=========================
|
|
|
|
(Dual core ARM Cortex-M3). In NuttX-7.22,
|
|
Masayuki Ishikawa contributed support for both the LC823450 architecture
|
|
and for ON Semiconductor's **LC823450XGEVK board**:
|
|
|
|
The LC823450XGEVK is an audio processing system Evaluation Board Kit
|
|
used to demonstrate the LC823450. This part can record and playback,
|
|
and offers High-Resolution 32-bit & 192 kHz audio processing
|
|
capability. It is possible to cover most of the functions necessary
|
|
for a portable audio with only this LSI as follows. It has Dual CPU
|
|
and DSP with High processing capability, and internal 1656K-Byte
|
|
SRAM, which make it possible to implement large scale program. And it
|
|
has integrated analog functions (low-power Class D HP amplifier, PLL,
|
|
ADC etc.) so that PCB space and cost is reduced, and it has various
|
|
interface (USB, SD, SPI, UART, etc.) to make extensibility high. Also
|
|
it is provided with various function including SBC/AAC codec by DSP
|
|
and UART and ASRC (Asynchronous Sample Rate Converter) for Bluetooth®
|
|
audio. It is very small chip size in spite of the multi-funciton as
|
|
described above and it realizes the low power consumption. Therefore,
|
|
it is applicable to portable audio markets such as Wireless headsets
|
|
and will show high performance.
|
|
|
|
Further information about the LC823450XGEVK is available on from the the
|
|
`ON
|
|
Semiconductor <http://www.onsemi.com/PowerSolutions/evalBoard.do?id=LC823450XGEVK>`__
|
|
website as are LC823450 `related technical
|
|
documents <http://www.onsemi.com/PowerSolutions/supportDoc.do?type=AppNotes&rpn=LC823450>`__.
|
|
Refer to the NuttX board
|
|
`README <https://github.com/apache/nuttx/blob/master/Documentation/platforms/arm/lc823450/boards/lc823450-xgevk/README.txt>`__
|
|
file for details of the NuttX port.
|
|
|
|
This port is intended to test LC823450 features including SMP. Supported
|
|
peripherals include UART, TIMER, RTC, GPIO, DMA, I2C, SPI, LCD, eMMC,
|
|
and USB device. ADC, Watchdog, IPC2, and I2S support was added by
|
|
Masayuki Ishikawa in NuttX-7.23. Bluetooth, SPI, and *PROTECTED* build
|
|
support were added by Masayuki Ishikawa in NuttX-7.26. Support for for
|
|
SPI flash boot was added in NuttX-7.28.
|
|
|
|
Supported Boards
|
|
================
|
|
|
|
.. toctree::
|
|
:glob:
|
|
:maxdepth: 1
|
|
|
|
boards/*/*
|