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SAM5708B bảng dữ liệu(PDF) 80 Page - List of Unclassifed Manufacturers

tên linh kiện SAM5708B
Giải thích chi tiết về linh kiện  AUDIO & MUSIC MULTI-DSP PROCESSOR
PDF  89 Pages
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nhà sản xuất  ETC1 [List of Unclassifed Manufacturers]
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SAM5708B bảng dữ liệu(HTML) 80 Page - List of Unclassifed Manufacturers

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SAM5708B
SAM5708B.pdf
– Rev 14/05/2018
80
© 2015-2018 Dream S.A.S., France
9. Audio Synchronization
9.1.
Synchronization on external audio devices
In professional applications, it can be decided to synchronize SAM5708B audio processing on
external audio flow(s) from USB, SPDIF or Ethernet interfaces. Another professional feature is
synchronization on external word clock.
9.1.1. Principle
 Audio clock frequency is extracted from incoming audio flow or from external word clock and is
compared with frequency currently used for internal audio processing.
 Comparison result is used to control the internal PWM generator.
 PWM generator output is filtered, and then, can drive an external VCXO.
 VCXO clock output is used as master clock for internal audio processing.
As a result, clock frequency for internal audio processing is perfectly enslaved to incoming audio
flow.
Pin used:
OSC1_X1, OSC1_X2:
Connection to 12MHz crystal for USB, Ethernet and system boot.
X1:
Clock input for audio system clock from VCXO
PWM:
PWM output
XWSBD0 (optional):
Input for external Word Clock



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