Naming Convention

Counter Design Names

We recommend developers to follow the naming convention when adding any counter designs

counter[down]<size>_[async|sync]_[set|reset|setb|resetb]

down

represent a counting down counter

size

size is an integer, indicating the number of bits for a counter

[async|sync]

represent the feature of reset and set signal

[setp|resetp|setn|resetn]

indicates the existence of reset/set signal as well as polarity. In particular, suffix p denotes active-high signals while suffix n denotes active-low signals

For instance,

counterdown8_async_resetn

shows a counter with the following features:

• counting down

• 8-bit in width

• Asynchronous active-low reset

Pin Names

Note

Please use lowercase as much as you can

For code readability, the pin name should follow the convention

<Pin_Name>_<Polarity><Direction>

Pin_Name

Represents the pin name

Polarity

Represents polarity of the pin, it can be

• n denotes a negative-enable (active_low) signal

Note

When not specified, by default we assume this is a postive-enable (active-high) signal

Direction

Represents the direction of a pin, it can be

• i denotes an input signal

• o denotes an output signal

A quick example

clk_ni

represents an input clock signal which is negative-enable

Another example

q_no

represents an output Q signal which is negative to the input