Programmable Transfer Burst Size是什么意思？

burst size一般指一次性传输的数据大小。

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GPSC与LPSC有什么区别？

GPSC是global PSC, LPSC是local PSC.

A PSC module consists of a Global PSC (GPSC) and a set of Local PSCs (LPSCs). The GPSC contains memory mapped registers, PSC interrupts, a state machine for each peripheral/module it controls. An LPSC is associated with every module that is controlled by the PSC and provides clock and reset control.