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BR262PMEVK
BELASIGNA
Prototyping Module
Evaluation Board
User's Manual
The BelaSigna R262 Prototyping Module
The BelaSigna R262 prototyping module is a miniature,
self-contained unit that can be integrated into a product or
prototype to evaluate the performance of BelaSigna R262
"in-form-factor".
Key Features
The module is shown in Figure 1 and features:
A Miniature Size of only 22 mm 6 mm
The 30-ball WLCSP Version of BelaSigna R262
(BR262W30A103E1G)
Dual MEMS
Microphones
Default Configuration
The prototyping module configures BelaSigna R262 to
run off its internal oscillator and to boot directly into the
ROM-based noise reduction algorithm. The module is
pre-configured to simultaneously output two different
algorithm turnings: a pure close-talk output on AO0, and an
output that is close-talk mixed 60% towards far-talk on
AO1. All that is required is to supply the module with 1.8 to
Semiconductor Components Industries, LLC, 2012
December, 2012 − Rev. 0
)
R262
Figure 1. BelaSigna R262 Prototyping Module
EVAL BOARD USER'S MANUAL
Two MEMS Microphones Spaced 10 mm Apart
(Knowles Part Number SPU0410HR5H−PB)
Through-hole Test Points for External Connections
Configured to Boot Directly to the ROM Application
Using the Internal Clock
2
I
C and GPIO Signals Available on Test Points
2
An Onboard I
C EEPROM for Optional Custom
Application
3.3 VDC (requires approximately 20 mA), and to connect
the analog outputs to your in-form-factor design. Power is
connected to VBAT (+) and GND (−). The prototyping
module configures the ROM application as summarized in
Table 1 when power is applied.
A description of all test points and a complete schematic
and layout is available in Appendix A.
1
http://onsemi.com
Through-hole Test
points
BelaSigna R262
Publication Order Number:
EVBUM2166/D
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Summary of Contents for ON Semiconductor BELASIGNA R262 BR262PMEVK
- Page 1 A description of all test points and a complete schematic AO1. All that is required is to supply the module with 1.8 to and layout is available in Appendix A. Publication Order Number: Semiconductor Components Industries, LLC, 2012 December, 2012 − Rev. 0 EVBUM2166/D...
- Page 2 BR262PMEVK Table 1. BelaSigna R262 PROTOTYPING MODULE LSAD CONFIGURATION Pin Name Preset Description CLOCK_SEL (SPI_CLK/GPIO0) Internal Clock BOOT_SEL (SPI_CS/GPIO1) Active Mode Talk Distance Selectable between Close-talk and Far-talk (5 cm – 500 cm) CHAN_SEL (SPI_SERO/GPIO2) Dual Output Noise Reduction (Two Single-ended Analog Outputs) Channel 0 as per BOOT_SEL “Start of Range”...
- Page 3 BR262PMEVK Close-Talk Mixed 60% Towards Far-Talk Care should be taken to properly shield the module and the The second, mixed mode of close-talk mixed 60% analog outputs if your product involves radio frequencies. towards far-talk is similar to the core near-talk mode and Use coaxial or shielded cable when connecting the analog features excellent noise reduction in applications where the outputs of the module, and if necessary, wrap the module...
- Page 4 BR262PMEVK APPENDIX A For your convenience, the prototyping module has many external devices are provided on through-hole test points. test points. Signals that are intended to be interfaced to All of the available test points are summarized in Table 2. Table 2.
- Page 5 BR262PMEVK Figure 4. BelaSigna R262 Prototyping Module Schematic http://onsemi.com...
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Page 6: Technical Contact Information
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein.
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