TI-Hercules系列的TMS570LS1227的技术手册spnu515c.pdf中的PENA到底是啥

您可以看一下 www.ti.com/.../spnu515c.pdf 的 2.5.1.45 Clock Control Register (CLKCNTL)

PENA Peripheral enable bit.

The application must set this bit before accessing any peripheral

0 The global peripheral/peripheral memory frames are in reset.
1 All peripheral/peripheral memory frames are out of reset.