Altera Active Serial Memory Interface User Manual
Page 8
Parameter
Legal Values
Descriptions
Choose I/O mode
STANDARD,
DUAL, QUAD
• The following commands are the instructions from the
EPCQ/EPCQ-L extended serial peripheral interface
(SPI) protocol which uses multiple data lines:
Dual Fast Read (Dual Input/Output Fast Read)
Quad Fast Read (Quad Input/Output Fast Read)
Dual Write (Dual Input Extended Fast Program)
Quad Write (Quad Input Extended Fast Program)
• These commands are combined into the following
ports:
Fast read port – fast read (x1), dual fast read and quad
fast read
Write port – write (x1), dual write and quad write
• You can choose which I/O mode to use, the choices are
Standard (x1), Dual (x2) or Quad (x4) mode.
• This option is only available for EPCQ/EPCQ-L
devices.
Read device dummy clock
—
• This option is disabled by default and the IP core
generates the design file as per usual.
• To perform fast read operation, align the dummy
cycles of EPCQ/EPCQ-L devices with Altera ASMI
Parallel designated value.
• When enabling this option, the
read_dummyclk
input
pin is created. The Altera ASMI Parallel IP core reads
the dummy clock stored in a non-volatile configuration
register of a flash at the beginning of the operation.
• When the signal is asserted high, the Altera ASMI
Parallel IP core reads the dummy clock in the volatile
configuration register of the flash. The value is held till
the next signal is asserted or when the device resets.
• This option is available for EPCQ/EPCQ-L devices
only.
8
Parameters
UG-ALT1005
2014.12.15
Altera Corporation
Altera ASMI Parallel IP Core User Guide