ARM Cortex

各位，请问在哪里可以找到Cortex 系列比较新的一些核心的技术文档呢？
cortex M3 designstart 。

I put two slaves on system AHB bus , one is leds the other is switch . I can write date to the leds' register to control the led on or off, but I can't read date from the switch data register . i...
Cortex M3 BRCHSTAT usage

Hi sirs, I am looking for a way to enhance CM3 performance especially branch. Following is what I found in TRM that BRCHSTAT seems to give user information of current pipeline status and it can be used...
Cortex-A53 / Cortex-A57的地址线数目

hi, experts: 根据CA57 TRM：它的地址线数目： Aarch64 state : 44根 Aarch32 state : 40根 Aarch32 state比Aarch64少用了4根：那么这4根地址线，在Aarch32下，用作什么signal pin?实现相关吗？ best wishes,
Cortex-A57's TCR_EL1 question

hi, experts: In CA57 TRM, chapter 4.3.41 : TCR_EL1[5:0] : the region size is 2(32-TSIZE), 是笔误吗？应该为2(64-TSIZE)吧. best wishes,