Entity: Heartbeat

Diagram

time TPD_G string USE_DSP_G real PERIOD_IN_G real PERIOD_OUT_G sl clk sl rst sl o

Description

Company : SLAC National Accelerator Laboratory

Description: Heartbeat LED output

This file is part of 'SLAC Firmware Standard Library'. It is subject to the license terms in the LICENSE.txt file found in the top-level directory of this distribution and at: https://confluence.slac.stanford.edu/display/ppareg/LICENSE.html. No part of 'SLAC Firmware Standard Library', including this file, may be copied, modified, propagated, or distributed except according to

the terms contained in the LICENSE.txt file.

Generics

Generic name Type Value Description
TPD_G time 1 ns
USE_DSP_G string "no"
PERIOD_IN_G real 6.4E-9 units of seconds
PERIOD_OUT_G real 1.0E-0

Ports

Port name Direction Type Description
clk in sl
rst in sl
o out sl

Signals

Name Type Description
r RegType
rin RegType

Constants

Name Type Value Description
CNT_MAX_C natural getTimeRatio(PERIOD_OUT_G,
(2.0 * PERIOD_IN_G))
CNT_SIZE_C natural bitSize(CNT_MAX_C)
REG_INIT_C RegType ( cnt => (others => '0'),
o => '0')

Types

Name Type Description
RegType

Processes