C-Media CMI8787 Audio Driver 8.17.72 Beta Windows 7

Open Drivers | Update | Search | Archive | Driver Request | Bookmark

Search:

Download Vendor

>> Driver Brief >>

>> Advertisement >>

>> Driver Download >>

>> Driver Summary >>

C-Media CMI8787 Audio Driver 8.17.72 Beta Windows 7..

>> Product Information and Specification >>

The CMI8787 is a high quality PCI 32-bit multi-channel audio processor that can be built into home audio electronics or personal computers to provide high fidelity sound playback and processing. It supports up to 12 output channels and 8 input channels. The 12 output channels are composed of 3 playback DMA’s, which are multi-channel DMA (32 bits, 8 channels, 192k), S/PDIF DMA (32 bits, 2 channels, 192k), and front panel DMA (16 bits, 2 channels, 48k). The 8 input channels are spread across 3 recording DMA’s (32 bits, 192k) - recording A, B, and C DMA’s. The architecture of recording is a unique point of CMI8787 that enables very flexible recording options for the user. The details of the recording mode selection will be explained in the later sections.

The CMI8787 is compatible with all the popular codecs, from I2S codecs with over 120dB quality to the usual AC97 codecs. This ability gives customers the flexibility to design their products exactly the way they want them. The I2S, AC-Link, 2-wire master bus, and SPI interfaces are used to transfer audio data and control data between the CMI8787 and codecs. To facilitate the connection with existing home audio electronics, the CMI8787 has incorporated the S/PDIF transmitter and receiver with 192k sampling rate and 24-bit resolution.


An EEPROM interface is built for the CMI8787 in connection with the EEPROM to store and retrieve the non-evaporable data for customer applications, such as board configuration, sub-vendor and sub-system IDs of the PCI configuration, or any dynamic data that customers want to restore at the next power-on.


The CMI8787 has an independent 2-wire slave bus to communicate with the micro control unit (MCU). This interface is used as a medium for the system driver and the MCU to exchange data. One of the applications of the 2-wire slave bus is to transmit the control data from the remote controller to the system driver. The MPU-401 MIDI UART is also integrated in the CMI8787.


There are six GPI phone jack detect pins in CMI8787, which can be used to distinguish if a cable is plugged in the phone jack. There are 9 GPIO pins on the chip, however some of them are shared with other functions. Then according to this information, the system driver can decide to turn on the C-Media’s Xear 3D audio technology if appropriate.


Hardware Features:

PCI 2.2 interface with bus mastering and burst modes

4 synchronous I2S output pairs

4 synchronous I2S input pairs

Multi-channel AC-link can support 2 AC97 codecs

All I2S I/O pairs support 32-bit high-definition PCM data transfer and adjustable sample rate up to 192KHz

Integrated 192k/24-bit S/PDIF transmitter

Integrated 192k/24-bit S/PDIF receiver

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

Serial bus to communicate with micro control unit (MCU)

MPU-401 MIDI UART port support

EEPROM control interface

9 direct access GPIO pins

128-pin LQFP high-quality thin package

Optional: Front panel design available with ac97 codec

>> C-Media Updated and Latest Drivers >>

>> C-Media Soundcard Driver Sponsored Links >>