bcm_rod_dp_updown_counter Entity Reference
Up-Down Counter. More...
Architectures | |
| bcm_rod_dp_updown_counter_arc | Architecture |
| up-down counter More... | |
Libraries | |
| ieee | |
| standard IEEE library | |
Packages | |
| std_logic_1164 | |
| std_logic definitions, see file | |
| std_logic_arith | |
| arithmetic operations on std_logic datatypes, see file | |
| std_logic_unsigned | |
| unsigned functions use ieee.std_logic_unsigned.all; operators for std_logic_vector type, see file | |
Ports | |
| CLK | in std_logic |
| 40 MHz clock | |
| CLK_2X | in std_logic |
| 80 MHz clock | |
| SCLR | in std_logic |
| synchronous clear (reset) signal | |
| count_up | in std_logic |
| 80 MHz clocked count up flag | |
| count_down | in std_logic |
| 40 MHz clocked count down flag | |
| busy | out std_logic |
| busy indicator signal | |
| data_available | out std_logic |
| output data valid indicator signal | |
| write_error | out std_logic |
| write data corruption error indicator signal | |
| read_error | out std_logic |
| read data corruption error indicator signal | |
Detailed Description
Up-Down Counter.Dual speed (80 MHz count up and 40 MHz count down) up/down counter. "busy" is high if "dp_ram_updown_counter" is at highest count "data_available" is high if "dp_ram_updown_counter" is not a lowest count "write_error" is high if "count_up" during "dp_ram_updown_counter" is at highest count "read_error" is high if "count_down" during "dp_ram_updown_counter" is at lowest count
Definition at line 38 of file bcm_rod_dp_updown_counter.vhd.
Member Data Documentation
busy out std_logic [Port] |
CLK in std_logic [Port] |
CLK_2X in std_logic [Port] |
count_down in std_logic [Port] |
count_up in std_logic [Port] |
data_available out std_logic [Port] |
ieee library [Library] |
read_error out std_logic [Port] |
read data corruption error indicator signal
Definition at line 50 of file bcm_rod_dp_updown_counter.vhd.
SCLR in std_logic [Port] |
std_logic_1164 package [Package] |
std_logic_arith package [Package] |
arithmetic operations on std_logic datatypes, see file
Definition at line 28 of file bcm_rod_dp_updown_counter.vhd.
std_logic_unsigned package [Package] |
unsigned functions use ieee.std_logic_unsigned.all; operators for std_logic_vector type, see file
Definition at line 30 of file bcm_rod_dp_updown_counter.vhd.
write_error out std_logic [Port] |
write data corruption error indicator signal
Definition at line 49 of file bcm_rod_dp_updown_counter.vhd.
The documentation for this class was generated from the following file:
