关于VC5502的GPIO的问题

根据bootloader application notes. 与你描述的不一致。

On the C5502, the EMIF and the HPI share pins to reduce pin count. The function of the shared

pins, or multiplexed pins as they are referred to in the data manual, is determined at reset via

the GPIO6 pin. If GPI06 is low, the EMIF will be disabled and the HPI will use the EMIF address

and data pins for operation (HPI operates in non-multiplexed mode). If GPIO6 is high, the EMIF

will be enabled and the HPI will operate through non-EMIF pins (HPI operates in multiplexed

mode).

到是与C5501的描述一致：

There is no sharing of pins between the EMIF and HPI on the C5501, however, the GPIO6 pin

must be kept high at reset to enable both of these modules. If GPIO6 is low at reset, the C5501

will configure the EMIF and HPI pins as parallel general-purpose input and output pins and the

EMIF and HPI will not be available for use