Two multi-channel analogue signal processors, combining the functions of up to six separate components, were introduced by Wolfson Microelectronics. The WM8580 and WM8581 provide a flexible system for routing and converting multiple audio paths and formats, simplifying audio path design, dedicated for LCD televisions, rewritable DVD systems, and AV receivers. The devices offer an ADC and multi-channel DAC, a 4:1 S/PDIF transceiver and a second audio interface. The products are built around a multi-channel audio CODEC - perfect for 5.1 and 7.1 audio output, or providing the multiple independent outputs such as Speaker, Line Out, Headphone and Auxilliary. Both devices feature a two-channel ADC; the WM8580 integrates a six-channel DAC and theWM8581 an eight-channel DAC.Each part features a 4:1 S/PDIF transceiver, with a maximum period jitter of 50ps. The transceiver can therefore accept S/PDIF signals from a source even if the input signal is severely degraded.
To address new customer requirements, such as HDMI, data recovery, Memory Card recording and Surround Sound Processors, Wolfson has developed a second audio interface, which allows seamless digital connection to multiple DSPs and peripherals. The WM8580 and WM8581 CODECs have two- and three-wire serial or hardware control interfaces. The multiple DAC outputs have independent digital volume controls and the devices operate on 2.7-5.5 Volts for analogue functions and 2.7-3.6 Volts for digital. Both the WM8580 and the WM8581 are available for sampling in 48-pin TQFP packages.
