Altera Active Serial Memory Interface User Manual
Page 10
Parameter
Legal Values
Descriptions
Use ‘read_address’ port
—
• This signal holds the address from which data is being
read. This signal works together with the
dataout[7..0]
signal. As data appears on
dataout[7..0]
, the address from which the data byte
was read appears on the read-address output port. For
EPCQ256/EPCQ-L256 or larger devices, the width of
the
addr
and
read_address
signals is 32 bit. For other
devices, the width of the
addr
and
read_address
signals is 24 bit.
• This option is available for all EPCS/EPCQ/EPCQ-L
devices.
Use 'ex4b_addr’
—
• To exit the 4-byte addressing mode when you use an
EPCQ256/EPCQ-L256 or larger devices, pull the
WREN signal high, followed by at least one clock cycle.
If WREN signal is zero, the 4-byte addressing mode
exit operation will not be carried out even though the
ex4b_addr is high. After the IP core receives the
command, the IP core asserts the busy signal to
indicate that the exit operation is in progress.
• Only applicable for EPCQ256/EPCQ-L256 or larger
devices.
10
Parameters
UG-ALT1005
2014.12.15
Altera Corporation
Altera ASMI Parallel IP Core User Guide