I2C也是1/6 CPU clock, 和mcbsp都是用SYSCLK3。见数据手册第133页的PLL说明。
SYSCLK3 clocks the PCI, HPI, UTOPIA, McBSP, GPIO, TIMER, and I2C peripherals, as well as the configuration bus of the PLL2 Controller.
http://www.ti.com/lit/ds/symlink/tms320c6455.pdf
The boot sequence is started automatically after each power-on reset, warm reset, max reset, and system reset. POR, warm reset都可以去重新锁存bootmode管脚决定进入哪种boot模式。 看一下POR信号是否足够长？没有和reset管脚接 一起吧？请看下面数据手册上对POR的说明。 7.6.1 Power-on Reset (POR Pin) http://www.ti.com/lit…
