Цитата(Harbour @ Dec 22 2009, 01:36)
не слышал, но если DCLK продолжает тикать в user mode, то его можно физически завести на CLK_IN
тикать может быть он и тикает, но вот вывод отключается
Цитата
After all configuration bits are received by the Cyclone III device, it releases the open-drain CONF_DONE pin, which is pulled high by an external 10-kΩ resistor. Initialization begins only after
the CONF_DONE signal reaches a logic high level. All AS configuration pins (DATA[0], DCLK, FLASH_nCE, and DATA[1]) have weak internal pull-up resistors that are always active. After
configuration, these pins are set as input tri-stated and are driven high by the weak internal pull-up resistors. The CONF_DONE pin must have an external 10-kΩ pull-up resistor in order for the device
to initialize.
есть ли возможность использовать встроеный осцилятор в Cyclone III?, то есть тот, который используется при конфигурации и т.п.
Dec 21 2009, 10:51
