1.在沒有mcu的情況下可以通過8個(gè)gpio腳組成24鍵的鍵盤

2.支持i2c與外界mcu進(jìn)行聯(lián)系

3.基本功能同cm108

4.48pin lqfp封裝

5.支持第三方軟件

6.主要應(yīng)用于高效低成本的pc網(wǎng)絡(luò)電話 公司電話0755-83732995

l         compliant with usb 2.0 full speed operation

l         compliant with usb audio device class specification v1.0

l         supports usb suspend/resume mode and remote wakeup with volume control pins

l         single 12mhz crystal input with on-chip pll and embedded usb transceiver

l         jumper pin for speaker mode (playback only) or headset mode (playback + recording)

l         for headset mode, usb audio function topology has 2 input terminals, 2 output terminals, 1 mixer unit, 1 selector unit, and 3 feature units

l         jumper pin for operation system mixer unit enable/disable under headset mode

l         for speaker mode, usb audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit

l         support one control endpoint, one isochroous out endpoint, one isochroous in endpoint, and one interrupt in endpoint

l         alternate zero bandwidth setting for releasing playback bandwidth on usb bus when this device is inactive

l         volume up, volume down, and playback mute support usb hid for host control synchronization

l         record mute pin with led indicator for record mute status

l         external eeprom interface for vendor specific usb vid, pid, and serial number

l         supports aes/ebu, iec60958, s/pdif consumer formats for stereo pcm data at s/pdif output

l         8 gpio pins with read/write via hid

l         embedded buzzer function controlled by register

l         support i2c interface for external mcu integrated

l         jumper pin for output voltage swing (3.5v or 2.5v)

l         jumper pin for power mode setting

l         isochroous transfer uses adaptive mode with internal pll for synchronization

l         48k/44.1khz sampling rate for both playback and recording

l         soft mute function

l         embedded high performance 16 bit audio dac with earphone phone buffer

l         host side data loss noise reduction function

l         embedded 16 bit adc input with microphone boost

l         embedded power on reset block

l         embedded 5v to 3.3v regulator for single external 5v operation

l         compatible with win98 se / win me / win 2000 / win xp and mac os9 / os x without additional driver

l          48 pin lqfp package

l          support hardware sdk tool for third-party software or soft-phone development