Multichannel Audio Processor 48-Pin LQFP T/R

The CS48DV2 ICs are programmed with the latest Dolby Volume firmware using the Cirrus Logic proprietary GUI software development & evaluation tool called Dolby Volume Controller. This same tool then configures the CS48DV2 through the SPI/I2C serial port via the USB 2.0 cable. The IC can be sent a command to boot itself using firmware loaded from ROM within the CS48DV6 (starting with Rev B Silicon - available in April, 2008), or it may be downloaded through the serial control port from either a master host microcontroller or an external I2 C EEPROM or SPI Flash device. In all cases, the host microcontroller is responsible for downloading the specific hardware and software configuration commands. All Dolby Volume parameters running on the CS48DV2 firmwarecan be adjusted in real-time as well as allowing 6 different presets to be saved and recalled easily, enabling very simple and quick “A/B” listening tests for the target design.

• 2.0 to 2.1 Channel/3.0 to 5.1 Channel 32-bit fixed-function Dolby Volume processing (512 FFT Window/20-Band)
• CS48DV2 supports up to 5.1 channel 32-bit PCM I/O at Fs of 32kHz, 44.1kHz & 48kHz
• Integrated S/PDIF Transmitter
• 2 Channeld DSD input support (Rev. B)
• SPI™/I2 C® serial control port
• Low-power standby: 260µW