
Port Name Condition Description
reset
Required Asynchronous reset input to the IP core.
Altera recommends that you reset this IP core before first
use to guarantee that it is in a valid state. However, it does
power up in the reset state. This port must be connected.
data_in[]
Optional Data input that provides parameter value when writing
parameters.
This 9-bit input port provides the data to be written to the
scan cache during a write operation. The bit width of the
counter parameter to be written determines the number
of bits of data_in[] that are read into the cache.
For example, the low bit count of the C0 counter is 8-bit
wide, so data_in[7..0] is read to the correct cache
location. The bypass mode for the C0 counter is 1-bit
wide, so data_in[0] is read for the value of this
parameter.
If omitted, the default value is 0.
counter_type[]
Optional Specifies the counter type.
An input port in the form of a 4-bit bus that selects which
counter type should be selected for the corresponding
operation (read, write, or reconfig).
Refer to the counter_type[3..0] settings table for the
mapping between the counter_type value and the
physical counter to be set.
counter_param[]
Optional Specifies the parameter for the value specified in the
counter_type port.
An input port in the form of a 3-bit bus that selects which
parameter for the given counter type should be updated.
The mapping to each parameter type and the
corresponding parameter bit-width are defined in the
counter_param[3..0] settings table.
UG-M10CLKPLL
2015.05.04
ALTPLL_RECONFIG Ports and Signals
7-3
ALTPLL_RECONFIG IP Core References
Altera Corporation
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