Fast transfer feature of the EZ-USB AN2135SC - FRD#, FWR# lines not toggling
The FRD# and FWR# lines are not toggling on the AN2135SC if the absolute address is 0xF000 or 0x8051 (outside the on-chip RAM space). The PORTACFG bits, FRD# and FWR# line signals, and data lines D0-D7 are correctly set.Is this a documentation problem or does the FRD# and FWR# lines not work on devices without the external address bus?
External Logic Read of the CY7C68013
When using the C7C68013, is there a limit on the number of words/bytes the external logic can read from the FIFO at one time? For instance, when the empty flag is not asserted and the external logic has read 512 bytes from a quad buffered FIFO, does the external device need to stop and check the empty flag before beginning to start reading again?