{"id":80227,"date":"2026-03-17T16:04:00","date_gmt":"2026-03-17T15:04:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/audio-precision-introduces-programmable-serial-i-o-module-for-low-voltage-high-speed-and-flexible-digital-audio-testing\/"},"modified":"2026-03-17T16:09:21","modified_gmt":"2026-03-17T15:09:21","slug":"audio-precision-introduces-programmable-serial-i-o-module-for-low-voltage-high-speed-and-flexible-digital-audio-testing","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/audio-precision-introduces-programmable-serial-i-o-module-for-low-voltage-high-speed-and-flexible-digital-audio-testing\/","title":{"rendered":"Audio Precision Introduces Programmable Serial I\/O Module for Low-Voltage, High-Speed, and Flexible Digital Audio Testing"},"content":{"rendered":"<header id=\"header\" class=\"header header--high\">\n\n\t\t\t\t\t\t\t\t\t\t<div class=\"header__background header__background--high\">\n\t\t\t\t\t<img decoding=\"async\" class=\"header__background-image\" src=\"https:\/\/fhi.nl\/app\/uploads\/2026\/03\/audio-precision-serial-io-low-voltage.jpg\" alt=\"\">\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\n\t\n\t<div class=\"container\">\n\t\t<div class=\"header__content\">\n\t\t\t<div class=\"header__first\">\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<h1 class=\"header__title\" >\n\t\t\t\t\tAudio Precision Introduces Programmable Serial I\/O Module for Low-Voltage, High-Speed, and Flexible Digital Audio Testing\t\t\t\t<\/h1>\n\n\t\t\t\t<div class=\"header__dots-line\">\n\t\t\t\t\t<svg width=\"431\" height=\"9\" viewbox=\"0 0 431 9\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M430.799 4.192a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.135 1.135 0 1 1-2.27 0 1.135 1.135 0 0 1 2.27 0Zm-27.27 0a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.39 1.39 0 1 1-2.78 0 1.39 1.39 0 0 1 2.78 0Zm-27.78 0a1.645 1.645 0 1 1-3.29 0 1.645 1.645 0 0 1 3.29 0Zm-28.29 0a1.9 1.9 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4.002-3.994Zm38.369-.007a3.242 3.242 0 0 0-3.243-3.236A3.242 3.242 0 0 0 79.78 4.76a3.242 3.242 0 0 0 3.243 3.237 3.242 3.242 0 0 0 3.243-3.237Zm38.375-.5a2.98 2.98 0 0 0-2.981-2.975 2.98 2.98 0 0 0-2.981 2.975 2.98 2.98 0 0 0 2.981 2.975 2.98 2.98 0 0 0 2.981-2.975Zm38.355-.506c0-1.5-1.222-2.716-2.722-2.716a2.721 2.721 0 0 0-2.722 2.716 2.721 2.721 0 0 0 5.444 0Zm38.375.001a1.958 1.958 0 0 0-3.918 0 1.958 1.958 0 0 0 3.918 0Zm38.359-.493a1.696 1.696 0 0 0-3.393 0 1.697 1.697 0 0 0 3.393 0Z\" fill=\"#fff\"\/><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"header__branch-logos\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/header>\n\n\n\n<div class=\"text bg--white\">\n\t<div class=\"container\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"text__content text__content--1-col\">\n\t\t\t<p><a href=\"https:\/\/shop.cnrood.com\/categories\/audio_precision\">Audio Precision<\/a> announced the Programmable Serial Input\/Output (PSIO) module, a next-generation digital serial interface for APx B-Series audio analyzers. PSIO replaces the long-standing DSIO module and delivers major advances in low-voltage operation, signal integrity, clocking, and format flexibility to address the needs of today&#039;s audio IC and system designers.<\/p>\r\n<p>Designed for engineers testing digital audio devices using I\u00b2S, TDM, and other serial digital audio interfaces, PSIO supports logic levels from 0.5 V to 3.3 V, enabling validation of modern low-power integrated circuits used in mobile phones, wearables, and battery-powered consumer electronics.<\/p>\r\n<p>\u201cWhen debugging the digital serial data interfaces \u2013 such as I2S \u2013 within modern audio devices, our customers demand flexibility, signal integrity, and support for the lowest and most energy-efficient logic levels possible,\u201d says Dan Knighten, General Manager of Audio Precision. \u201cOur new Programmable Serial I\/O module provides a digital Swiss army knife for interfacing to modern ICs including DSPs, CODECs, SoCs, DACs and ADCs.\u201d<\/p>\r\n<p>\u00a0<\/p>\r\n<h3>Key Innovations in the Programmable Serial I\/O Module<\/h3>\r\n<p><strong>Remote Probe Architecture for Superior Signal Integrity<br \/><\/strong>PSIO introduces a powered external probe that places high-speed digital I\/O physically closer to the device under test. This short signal path dramatically improves signal fidelity and timing accuracy compared to the long cable runs required in previous designs.<\/p>\r\n<p><strong>Support for Low Logic Voltages<br \/><\/strong>With programmable logic levels from 0.5 V to 3.3 V in 100 mV steps, PSIO exceeds the low-voltage capabilities of any competing serial interfaces, supporting next-generation low-power IC designs.<\/p>\r\n<p><strong>High Speed Operation for Advanced Audio Formats<br \/><\/strong>PSIO supports sample rates up to 768 kHz with bit clock speeds up to 55.296 MHz, enabling validation of high-resolution, multi-channel audio systems.<\/p>\r\n<p><strong>Flexible Serial Audio Configuration<br \/><\/strong>A redesigned architecture allows significantly more flexible configuration of channels, word widths (8\u2013256 bits), clocking relationships, and data formatting, addressing allowing the utmost flexibility in configuring and testing serial digital audio interfaces.<\/p>\r\n<p><strong>Built-In Debug and Verification Tools<br \/><\/strong>Integrated oscilloscope monitor outputs, visual LED status indicators on both the module and probe, and support for jitter generation and jitter analysis help engineers quickly validate timing, clock integrity, and device behavior.<\/p>\r\n<p><strong>Seamless Migration for Existing Users<br \/><\/strong>PSIO is a direct replacement for DSIO and the APx500 can automatically convert existing DSIO configurations to equivalent PSIO settings, minimizing disruption for current users.<\/p>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t<div class=\"articles bg--offwhite automatic\">\r\n\t\t<div class=\"container\">\r\n\t\t\t<div class=\"articles__header\">\r\n\t\t\t\t\t\t\t\t\t<div class='heading-wrapper'><svg width=\"13\" height=\"13\" viewbox=\"0 0 13 13\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"6.394\" cy=\"6.5\" r=\"6.394\" fill=\"#000\"\/><\/svg><h2>Related 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PSIO replaces the long-standing DSIO module and delivers major advances in low-voltage operation, signal integrity, clocking, and format flexibility to address the needs of today&#039;s audio IC and system designers.<\/p>","protected":false},"featured_media":80228,"template":"","branches":[],"events":[],"secretariat":[],"categories":[],"themes_tax":[],"content_types":[514],"class_list":["post-80227","news","type-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Audio Precision Introduces Programmable Serial I\/O Module for Low-Voltage, High-Speed, and Flexible Digital Audio Testing<\/title>\n<meta name=\"description\" content=\"Audio Precision announced the Programmable Serial Input\/Output (PSIO) module, a next-generation digital serial interface for APx B-Series audio analyzers\" \/>\n<meta name=\"robots\" content=\"index, follow, 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