User`s manual

VLSI

Solution

VS1000+1003 VoIP Speaker Phone VSMPG

3. FEATURES

3.7 Feature List

This is a feature list for the VoIP Speaker Phone:

• USB 2.0 Full Speed compatible.

• USB Audio Device Class compatible.

• USB bus powered 400 mA, without external power supply.

• Automatic echo cancellation when used as an audio device.

• Automatic Li-Ion 3.7 V battery charging logic.

• High-performance 16-bit stereo 32 kHz stereo audio playback.

• Microphone ampliﬁer and high-performance 16-bit 8 kHz mono audio recording.

• High-performance stereo 16-bit audio DAC, earphone ampliﬁer and mono speaker

ampliﬁer.

• Embedded 5 V to internal voltages regulators with voltage level detectors for single

5 V USB power supply.

• Conﬁgurable: VLSI Solution can make customizations for customers that are plac-

ing mass quantity orders, including but not limited to those mentioned in Chapter 9.

• Compatibility:

– Microsoft Windows XP / Vista

– Mac OS X

– Linux

Applications:

• VoIP phone

• Media player

• Voice recorder

• Mass storage device

• Sound card

Rev. 2.12

2008-09-18

Page 12(30)