USB Audio,PCIe audio,USB audio ic,USB sound chip
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USB Audio,PCIe audio,USB audio ic,USB sound chip

USB Audio,PCIe audio,USB audio ic,USB sound chip
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USB Audio,PCIe audio,USB audio ic,USB sound chip
Home >> Product >> PCI/PCIe Audio >> CM8828
    USB Audio,PCIe audio,USB audio ic,USB sound chip

    CM8828

    Introduction

    The Oxygen Express™ HD CM8828 is a high quality PCI express multi-channel audio processor that not only an Intel HD Audio specification compatible audio single chip, but also can be a controller which can link HDA codec. CM8828 can be built in the home audio electronics or personal computer to provide high fidelity sound and become a professional audio processing center in your life. It supports up to 10 outgoing channels and 6 ingoing channels. The 10 outgoing channels are composed of 2 playback DMA’s, which are multi-channel DMA (24 bits, 8 channels, 192k), Headphone out & S/PDIF (each 24 bits, 2 channels, 192k), and RTC (real-time communication) DMA (24 bits, 2 channels, 192k). The 6 ingoing channels are spread in 3 recording DMA’s (up to 24 bits, 192k).

     

    Product benefit

    • Compatible with PCI Express 1.1 interface with bus mastering and burst modes
    • Embedded an 8051-based MCU to transcode HD Audio command s(An external 4 or 8KB serial EEPROM is required
    • Build in HD Audio controller.
    • Audio format supports 192K/176.4K/96K/88.2K/48K/44.1K and 16/24bits resolution
    • Integrated 192K/176.4K/96K/88.2K/48K/44.1K, and 16/24-bit S/PDIF transmitter/Receiver
    • Supports SPI/I2C control interface
    • 24.576MHz crystal input required with embedded PLL for adaptive clock rate
    • Vista/Win7 WHQL compatible

    Product benefit

    • Compatible with PCI Express 1.1 interface with bus mastering and burst modes
    • Embedded an 8051-based MCU to transcode HD Audio command s(An external 4 or 8KB serial EEPROM is required
    • Build in HD Audio controller.
    • Audio format supports 192K/176.4K/96K/88.2K/48K/44.1K and 16/24bits resolution
    • Integrated 192K/176.4K/96K/88.2K/48K/44.1K, and 16/24-bit S/PDIF transmitter/Receiver
    • Supports SPI/I2C control interface
    • 24.576MHz crystal input required with embedded PLL for adaptive clock rate
    • Vista/Win7 WHQL compatible

    Product features

    Bus

    • Compatible with PCI Express 1.1 interface with bus mastering and burst modes

    Architecture

    • Build in HD Audio controller
    • Embedded an 8051-based MCU to transcode HD Audio command to accommodate various external HDA codecs (An external 4 or 8KB serial EEPROM is required]
    • Embedded ROM code for MCU to transcode HD Audio command to control embedded HDA codecs
    • Analog mixer to mix all input data to output streams through HDA codecs

    DMA Controller

    • Three playback DMAs and three recording DMAs following Vista/Win7 HD Audio controller requirements and to be WaveRT-port-friendly:
    • Playback DMA#A supports up to 8ch audio output (2,4,6,8CH configurable by SW driver control)
    • Playback DMA#B supports independent 2ch audio output (e.g. Front Headphone Out) or S/PDIF
    • Recording DMA#A supports up to 2ch audio input
    • Recording DMA#B supports independent 2ch audio input
    • Recording DMA#C supports independent 2ch audio input (for S/PDIF input stream or other purpose)
    • Sampling rates: all DMA channels support: 192K/176.4K/96K/88.2K/48K/44.1K PCM data
    • Resolution (Word-length): all DMA channels support: 16/24bit PCM data transfer modes

    Audio I/O

    • Intel HD Audio Link supports 1 external HDA codecs
    • Integrated 192K/176.4K/96K/88.2K/48K/44.1K, and 16/24-bit S/PDIF transmitter
    • All input data can be analog mixed to output streams

    Control Interface

    • SPI control interfaces
    • I2C Interface supports both Master and Slave mode
    • Interrupt pin for external MCU read transaction
    • Serial EEPROM programming interface for customizing Sub-VendorID/Sub-DeviceID (and even Vendor/Device IDs as well), storing HDA power-on pin configuration (replacing MB BIOS function) and 8051 ROM-codes (HDA command transcoder)
    • Maximum 9 GPIO pins for external devices control and various purposes

    General

    • Compliant with Microsoft Vista/Win7 UAA design guideline and driver
    • Pass Windows Vista/Win7 Premium Audio logo certification
    • 24.576MHz crystal input required with embedded PLL for adaptive clock rate
    • Single 3.3V power supply
    • 3.3 V digital I/O pads with 5V tolerance
    • Package and Pin Number: LQFP-80
    • Default target codecs: CM9882A

    Product features

    Bus
    • Compatible with PCI Express 1.1 interface with bus mastering and burst modes

    Architecture

    • Build in HD Audio controller
    • Embedded an 8051-based MCU to transcode HD Audio command to accommodate various external HDA codecs (An external 4 or 8KB serial EEPROM is required]
    • Embedded ROM code for MCU to transcode HD Audio command to control embedded HDA codecs
    • Analog mixer to mix all input data to output streams through HDA codecs

    DMA Controller

    • Three playback DMAs and three recording DMAs following Vista/Win7 HD Audio controller requirements and to be WaveRT-port-friendly:
    • Playback DMA#A supports up to 8ch audio output (2,4,6,8CH configurable by SW driver control)
    • Playback DMA#B supports independent 2ch audio output (e.g. Front Headphone Out) or S/PDIF
    • Recording DMA#A supports up to 2ch audio input
    • Recording DMA#B supports independent 2ch audio input
    • Recording DMA#C supports independent 2ch audio input (for S/PDIF input stream or other purpose)
    • Sampling rates: all DMA channels support: 192K/176.4K/96K/88.2K/48K/44.1K PCM data
    • Resolution (Word-length): all DMA channels support: 16/24bit PCM data transfer modes

    Audio I/O

    • Intel HD Audio Link supports 1 external HDA codecs
    • Integrated 192K/176.4K/96K/88.2K/48K/44.1K, and 16/24-bit S/PDIF transmitter
    • All input data can be analog mixed to output streams

    Control Interface

    • SPI control interfaces
    • I2C Interface supports both Master and Slave mode
    • Interrupt pin for external MCU read transaction
    • Serial EEPROM programming interface for customizing Sub-VendorID/Sub-DeviceID (and even Vendor/Device IDs as well), storing HDA power-on pin configuration (replacing MB BIOS function) and 8051 ROM-codes (HDA command transcoder)
    • Maximum 9 GPIO pins for external devices control and various purposes

    General

    • Compliant with Microsoft Vista/Win7 UAA design guideline and driver
    • Pass Windows Vista/Win7 Premium Audio logo certification
    • 24.576MHz crystal input required with embedded PLL for adaptive clock rate
    • Single 3.3V power supply
    • 3.3 V digital I/O pads with 5V tolerance
    • Package and Pin Number: LQFP-80
    • Default target codecs: CM9882A

    Block diagram