RGB

Register Listing for RGB

Register	Address
RGB_DAT	0xe0006800
RGB_ADDR	0xe0006804
RGB_CTRL	0xe0006808
RGB_RAW	0xe000680c

RGB_DAT

Address: 0xe0006800 + 0x0 = 0xe0006800

This is the value for the SB_LEDDA_IP.DAT register. It is directly written into the SB_LEDDA_IP hardware block, so you should refer to http://www.latticesemi.com/view_document?document_id=50668. The contents of this register are written to the address specified in ADDR immediately upon writing this register.

RGB_ADDR

Address: 0xe0006800 + 0x4 = 0xe0006804

This register is directly connected to SB_LEDDA_IP.ADDR. This register controls the address that is updated whenever DAT is written. Writing to this register has no immediate effect – data isn’t written until the DAT register is written.

RGB_CTRL

Address: 0xe0006800 + 0x8 = 0xe0006808

Control logic for the RGB LED and LEDDA hardware PWM LED block.

Field	Name	Description
[0]	EXE	Connected to SB_LEDDA_IP.LEDDEXE. Set this to 1 to enable the fading pattern.
[1]	CURREN	Connected to SB_RGBA_DRV.CURREN. Set this to 1 to enable the current source.
[2]	RGBLEDEN	Connected to SB_RGBA_DRV.RGBLEDEN. Set this to 1 to enable the RGB PWM control logic.
[3]	RRAW	Set this to 1 to enable raw control of the red LED via the RAW.R register.
[4]	GRAW	Set this to 1 to enable raw control of the green LED via the RAW.G register.
[5]	BRAW	Set this to 1 to enable raw control of the blue LED via the RAW.B register.

RGB_RAW

Address: 0xe0006800 + 0xc = 0xe000680c

Normally the hardware SB_LEDDA_IP block controls the brightness of the LED, creating a gentle fading pattern. However, by setting the appropriate bit in CTRL, it is possible to manually control the three individual LEDs.

Field	Name	Description
[0]	R	Raw value for the red LED when CTRL.RRAW is 1.
[1]	G	Raw value for the green LED when CTRL.GRAW is 1.
[2]	B	Raw value for the blue LED when CTRL.BRAW is 1.