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关于DM36x里的"ALAW"



DM36x的VPSS里面有一个ALAW的概念,在sprufg8c_TMS320DM36x Digital Media System-on-Chip (DMSoC) Video Processing Front End (VPFE) User's Guide里面只有简单的描述“Inverse ALAW decompression of RAW data from SDRAM”,

不知道ALAW具体是什么意思,希望TI的专家能予以解释

小弟先谢过了