timer.h File Reference

Timer types header file for CDL modules. More...

Detailed Description

Timer types header file for CDL modules.

Copyright (C) 2018, Gavin J Stark. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Header file for the types for timers

Data Structures
struct	t_timer_control
struct	t_timer_value

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Data Structure Documentation

struct t_timer_control

Data Fields
bit	block_writes	Assert to block writes to the timer counter
bit[8]	bonus_subfraction_denom	(d-1) in fractional n/16d increment per cycle; If zero then no subfractional add
bit[8]	bonus_subfraction_numer	(n-1) in fractional n/16d increment per cycle
bit	enable_counter	Assert to enable the timer counter; otherwise it holds its value
bit[4]	fractional_adder	f in fraction f/16 to add per cycle
bit[8]	integer_adder	integer amount to add to timer counter per cycle
bit	reset_counter	Assert to reset the timer counter to 0; this takes precedence over enable_counter

struct t_timer_value

Data Fields
bit	irq	Asserted if comparator >= timer value
bit[64]	value	64-bit timer value, reflecting the value in the timer counter