POE-VOICE-RD Silicon Laboratories Inc, POE-VOICE-RD Datasheet - Page 6

• Manufacturer Part Number: POE-VOICE-RD
• Description: KIT REF DESIGN PWR OVER ETHERNET
• Manufacturer: Silicon Laboratories Inc

Specifications of POE-VOICE-RD

• Main Purpose: Reference Design, Power Over Ethernet , Voice Transmission
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: C8051F340, CP2201, Si3400
• Primary Attributes: Embedded Ethernet, Power over Ethernet, 8 kHz Voice Sampling System
• Secondary Attributes: Graphical User Interface
• Processor To Be Evaluated: C8051F340
• Interface Type: Ethernet
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1326

PoE-VOICE-RD
6. Power Over Ethernet Voice Transmission Demonstration
The demonstration includes:
6.1. Voice Transmission From the Embedded System
Once the View Data... button is pressed, the sound from the PoE-VOICE-EB will be transmitted to the PC
application. The time-domain representation of the signal is shown in the bottom graph and an FFT of the sound
showing its various frequency components is shown in the top graph. There are two options for listening to the
sound transmitted from the embedded system.
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Voice Transmission from the embedded system.
Detecting PoE power vs. Auxiliary power.
Monitoring real-time sensor data using a web browser.
Controlling the state of the yellow and green LEDs from a web browser.
Sending an e-mail from the embedded system containing the latest sensor data.
Remotely updating firmware using the bootloader.
a. Record to WAV file -- Pressing the Start Record button will begin recording. When finished speaking, press
the Stop Record button and specify a location to save the WAV file. You can listen to the recording using the
Play Wave File... button or by playing the WAV file in your favorite media player.
b. Live Playback -- If the embedded system is located in a different room than the PC, or you are using
headphones, then the Live Playback button may be pressed to allow real-time listening to the sound picked up
by the embedded system’s microphone. When live playback is enabled, sound is buffered/delayed for 5
seconds to remove network-generated jitter.
Figure 7. Listening to sound from the Embedded System
Rev. 0.2