骅讯电子 CMI8786 高品质PCI道音频处理器

　　Features

　　PCI 2.2 interface with bus mastering and burst modes

　　Only one 24.576MHz oscillator is needed

　　4 synchronous 12S output data stream pairs within 1 flexible output DMA

　　Programmable channel routing mechanism among the 4 12S output pairs

　　1 synchronous 12S input data stream pairs.

　　An alternatively multi-channel AC-link can support 1AC97 codec

　　Programmable HW monitoring routing from 12S inputs to outputs.

　　All I2S 1/O pairs support 24-bit high-definition PCM data transfer and adjustable sample rate up to

　　96KHz

　　Integrated 192k/24-bit S/PDIF transmitter with 1 dedicated S/PDIF OUT DMA

　　Integrated 192k/24-bit S/PDIF receiver with 1 dedicated S/PDIF IN DMA

　　S/PDIF IN supports digital loop back path for transforming between optical and RCA connection

　　A 48k/16-bit front panel DMA for AC97 codec

　　2-wire master serial bus or 4-wire SPI (serial port interface) to control 12S codecs

　　Interrupt pin to inform external MCU to retrieve the data that system driver wants to pass out

　　One MPU-401 MIDI UART port

　　EEPROM control interface

　　6 GPI phone jack detection pins to distinguish if a cable is plugged in the jack

　　9 direct access GPIO pins

　　128-pin LQFPhigh-quality thin package