PIO-D64/PIO-
D64U User’s Manual ( Ver.1.
6, Mar. 2015, PMH-007-16 ) ----- 13
2.4.2 DI Port Architecture (CN2 & CN4)
The enable/disable of DI port is controlled by the RESET\ signal, as
depicted as below:
The RESET\ is in Low-state
all DI operation is disable
The RESET\ is in High-state
all DI operation is enable
Note that when the PC is power-up, all operation of DI port is disabled
because RESET\ is in low level. Besides, user may need to latch input data by
external strobe single in some application. We provide the following architecture,
as shown in Figure 2.3, to allow user to apply the STROBE pin to latch D/I input
signal.
If no signal is connected to strobe pin, the input data is transparent.
Figure 2.3
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