The PCM270xC are TI's single-chip USB stereo audio digital-to-analog converters (DACs) with USB 2.0 compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some areas (for example, vendor ID/product ID) through the use of an external ROM (PCM2704C and PCM2706C) or serial peripheral interface (SPI) (PCM2705C and PCM2707C). The PCM270xC also employ SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog phase-locked loops (PLLs) with SpAct enable playback with low clock jitter.
|PART NUMBER||PACKAGE||BODY SIZE (NOM)|
|PCM2704C||SSOP (28)||5.30 mm × 10.20 mm|
|PCM2706C||TQFP (32)||7.00 mm × 7.00 mm|
Changes from A Revision (July 2012) to B Revision
Changes from * Revision (August 2011) to A Revision