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6614 ARM boot mode sequence不能正常工作



Hi all,

6614的datasheet(SPRS671D),

2.6.1章节,写着“With ARM as the boot master, two boot modes are chosen by the boot mode sequence. If a failure on the primary
boot mode is detected, then the secondary boot mode is attempted.”

table 2-13 ARM Boot Mode Sequence,里面每一组设置都有两种boot mode(分别为1st和2nd),我以0001组合为例,其对应的boot mode是1st=UART,2nd=EMIF16(NOR),在串口没有接线的情况下,等了好久也没见EMIF16(NOR)有进行boot(在组合1101时,这种bootmode是能正常工作的)。

问题:如何理解上面红色的句子?怎样算primary boot mode failure?

谢谢!