C-MEDIA骅讯 CMI8787 高性能PCI音频处理器

　　Hardware Features

　　PCI 2.2 interface with bus mastering and burst modes

　　Only one 24.576MHz oscillator is needed

　　4 synchronous 1s output data stream pairs within 1 flexible output DMA

　　Programmable channel routing mechanism among the 4 I'S output pairs

　　4 synchronous I'S input data stream pairs spread in 3 input DMA's(for Dolby pro-audio applications)

　　Optionally, a multi-channel AC-link can support 2 AC97 codecs

　　Programmable HW monitoring routing from I's inputs to outputs

　　All I's IO pairs support 32-bit PCM data transfer and adjustable sample rate (up to 192KHz)

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

　　Integrated 192k/24-bit S/PDIF receiver in recording DMA

　　S/PDIF IN supports digital loopback path for switching between optical and RCA connections

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

　　2-wire master serial bus or 4-wire SPI(Serial Peripheral Interface) bus to control I's codees

　　2-wire slave serial bus to communicate with microcontroller unit (MCU)

　　Interrupt pin to inform external MCU to retrieve the data from the syslem driver

　　One MPU-401 MIDI UART port

　　EEPROM control interface

　　6 GPI phone jack detection pins

　　Advanced device-sensing technology indicates whether a speaker or a headphone is plugged in the jack

　　9 direct-access GPIO pins

　　3 bonding-option bits for 8 identificationpossibilites

　　128-pin LQFP thinhigh-quality package