T-Core
User Manual
20
January 14, 2020
Figure 2-21 Data Transmission Method
The DIN signal level of the WS2812B is 5V, so a Level Shift will be required to raise the control
signal voltage to the 5V level.
shows the pin assignment of RGB LED Control signal.
More information about the RGB Color LED is available in its datasheet. It can be found on
manufacturer’s website or in the directory \Datasheet\RGB_LED of system CD.
Table 2-8 Pin Assignment for RGB Color LED and Extension port
Signal Name
FPGA Pin No.
Description
I/O Standard
OB_LED_RGB_D
PIN_D19
On-Board RGB LED Data IN
3.3-V LVTTL
EX_LED_RGB_D
PIN_D18
RGB LED Data IN for External Header
3.3-V LVTTL
◼
Expansion Port
In addition to the Built-in four RGB LEDs on the T-Core board, two 3-pin headers (JP3 and JP4)
are reserved for user to expand more LED. Users can purchase the commercially RGB LED Line
Pipe in series to make the application more widely available.
See
, if user expands more RGB LEDs on JP3, it must be noted that the control method
should take into account that there are four on board LEDs on the front end. If you use JP4 to
expand and connect more LEDs, you only need to consider the newly added LEDs for the
controlling.
For these 3 pins header, detailed information is described as follows: