Ua hoʻokumu hou ʻo Nordic i kahi huahana portfolio leo Bluetooth hou, ʻo ka Nordic nRF5340 Audio Development Kit. Aia kēia leo DK i nā mea a pau e pono ai e kōkua i nā mea hoʻomohala e hoʻohana i ka maikaʻi o ka leo kiʻekiʻe, ka hoʻohana haʻahaʻa haʻahaʻa a me nā hoʻonui stereo uila o Bluetooth LE Audio.
Hoʻolaha ʻo Nordic i ka nRF5340 Audio Development Kit, kahi kahua hoʻolālā no ka hoʻomohala wikiwiki ʻana i nā huahana Bluetooth® LE Audio. ʻO ka nRF5340 ka SoC uila mua loa o ka honua me ʻelua mau mea hana Arm® Cortex®-M33, kūpono no ka LE Audio a me nā polokalamu Internet of Things (IoT) paʻakikī.
Hōʻike ka Bluetooth Special Interest Group (SIG) i ka LE Audio ʻo "ka wā e hiki mai ana o ke kani uila". Hoʻokumu ʻia kēia ʻenehana i ka codec kamaʻilio haʻahaʻa haʻahaʻa LC3, kahi hoʻonui i ka codec subband haʻahaʻa haʻahaʻa (SBC) i hoʻohana ʻia e Classic Audio.
Mālama ʻo LC3 i ka LE Audio i ʻoi aku ka maikaʻi o ka leo leo a ʻoi aku ka lōʻihi o ke ola pākaukau ma mua o Classic Audio i nā hihia hoʻohana āpau. Ua hōʻike ʻia ka hoʻāʻo hoʻolohe nui ʻana e hāʻawi ka LC3 i ka maikaʻi leo ʻoi aku ka maikaʻi ma mua o SBC ma ka helu hāpana like ma nā helu hāpana a pau, a hāʻawi i ka maikaʻi leo like a ʻoi aku ka maikaʻi ma ka hapalua o ka helu ʻikepili uila.
ʻO nā helu ʻikepili haʻahaʻa he kumu nui i ka hoʻemi ʻana i ka hoʻohana ʻana i ka mana ma nā huahana LE Audio. Lawe pū ʻo LE Audio iā True Wireless Stereo (TWS) a me nā hiʻohiʻona hou i nā noi leo uila, me ka Audio Sharing.
ʻO ka Audio DK's core nRF5340 SoC e hui pū i kahi polokalamu noi noi kiʻekiʻe me ka polokalamu pūnaewele ultra-low-power piha piha i ka polokalamu no ka maikaʻi o ka mana a me ka hana kiʻekiʻe i loko o kahi hoʻolālā pālua. Loaʻa i ka 128 MHz Arm Cortex-M33 nā polokalamu noi noi 1 MB o ka uila a me 512 KB o RAM, i mea kūpono no ka lawelawe ʻana i nā noi maʻamau a me nā codec leo e like me LC3.
ʻO ka 64 MHz Arm Cortex-M33 pūnaewele kaʻina hana he 256 KB o ka hoʻomanaʻo uila a me 64 KB o RAM, a ua hoʻoikaika ʻia ka mana e holo i ka polokalamu protocol Nordic Bluetooth LE Audio RF. ʻO ka nRF Connect SDK he kahua hoʻomohala nRF5340 SoC e hāʻawi ana i ke kākoʻo pae papa NRF5340 Audio DK a kākoʻo iā LE Audio, Bluetooth Low Energy, Thread a me nā noi ʻē aʻe.
Ma kahi o ka nRF5340 SoC, hōʻike ka Audio DK i ka Nordic's nPM1100 power management IC (PMIC) a me Cirrus Logic's CS47L63 audio digital signal processor (DSP).
Hōʻike ka nPM1100 i kahi mea hoʻoponopono buck configurable maikaʻi loa a me kahi mea hoʻopihapiha i hoʻohui ʻia me ka 400mA e hoʻopiʻi nei i kēia manawa ma kahi ʻano liʻiliʻi liʻiliʻi loa, e lilo ia i PMIC kūpono no nā noi i hoʻopaʻa ʻia e like me TWS earbuds. Hōʻike ka CS47L63 i kahi DAC hana kiʻekiʻe a me ka mea hoʻokele ʻokoʻa i hoʻopaʻa ʻia no ka hoʻopili pololei ʻana i nā ukana headphone waho no nā huahana earbud me nā huaʻōlelo mono a pololei wale nō.
