Interface pins_if

pins_if #( .Width(Width), .PullStrength(PullStrength) ) u_pins_if ( .pins(pins) );

Block Diagram of pins_if

Parameters

Name	Default value	Description
Width	1
PullStrength	"Pull"

Ports

Name	Type	Direction	Description
pins	wire logic [Width - 1 : 0]	inout

Signals

Name	Type	Description
pins_o	logic[Width-1:0]	value to be driven out
pins_oe	bit[Width-1:0]	output enable
pins_pd	bit[Width-1:0]	pull down enable
pins_pu	bit[Width-1:0]	pull up enable

Assertions

Name	Kind	Description
pins_if.PullStrengthParamValid	immediate assert	(PullStrength inside {"Weak", "Pull"})

Functions

function void

drive_en_pin(int idx = 0, bit val)

function to set pin output enable for specific pin (useful for single pin interface)

Parameters:

• idx (int)

• val (bit)

function void

drive_en(bit[Width-1:0] val)

function to set pin output enable for all pins

Parameters:

val (bit[Width-1:0])

function void

drive_pin(int idx = 0, logic val)

function to drive a specific pin with a value (useful for single pin interface)

Parameters:

• idx (int)

• val (logic)

function void

drive(logic[Width-1:0] val)

function to drive all pins

Parameters:

val (logic[Width-1:0])

function void

set_pulldown_en(bit[Width-1:0] val)

function to drive all pull down values

Parameters:

val (bit[Width-1:0])

function void

set_pullup_en(bit[Width-1:0] val)

function to drive all pull up values

Parameters:

val (bit[Width-1:0])

function void

set_pulldown_en_pin(int idx = 0, bit val)

function to drive the pull down value on a specific pin

Parameters:

• idx (int)

• val (bit)

function void

set_pullup_en_pin(int idx = 0, bit val)

function to drive the pull up value on a specific pin

Parameters:

• idx (int)

• val (bit)

function logic

sample_pin(int idx = 0)

function to sample a specific pin (useful for single pin interface)

Parameters:

idx (int)

function logic[Width-1:0]

sample()

function to sample all pins

function void

disconnect()

Fully disconnect this interface, including the pulls.

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