Top entity of the display driver. More...
Entities | |
| arch | architecture |
| Architecture definition of the DisplayDriverwDecoder_Top. More... | |
Libraries | |
| ieee | |
Use Clauses | |
| std_logic_1164 | |
| numeric_std | |
Ports | |
| clk | in std_logic |
| input clock, xx MHz. | |
| reset | in std_logic |
| active high | |
| ascii_in | in std_logic_vector ( 7 downto 0 ) |
| disp_data | out std_logic_vector ( 13 downto 0 ) |
| disp_sel | out std_logic |
Detailed Description
Top entity of the display driver.
Member Data Documentation
◆ ascii_in
|
Port |
ASCII symbols are coded in 1B having values from 0x00 to 0x7F. Current implementation uses 104-Character ASCII Font Map described in MAX6955 Datasheet. https://datasheets.maximintegrated.com/en/ds/MAX6955.pdf The MSB is used to light the display dot. For example if you want to display H the code will be 0x48 (or 01001000b). If you want to display H. the code will be 0xC8 (or 11001000b).
◆ disp_data
|
Port |
Typically the data fed to display (single or multiple) is provided for single display at a time. If multiple displays are required together with data goes display select (according typical dynamic display indication).
◆ disp_sel
|
Port |
If more displays needs to be fed change disp_sel to vector with length equal to number of displays. Use principles of the standard dynamic indication: provide data then enable the displays sequentially. If brightness control is desired just AND the selector and the PWM controller output.
The documentation for this class was generated from the following file:
- C:/Projects/single-14-segment-display-driver-w-decoder/Project/Sources/DisplayDriverwDecoder_Top.vhd
