The TLC5954 is a 48-channel, constant-current sink LED driver. Each
channel can be turned on or off by writing data to an internal
register. The output channels (OUTX) are grouped into three groups
of 16 channels. Each channel group (R, G, and B) has a 128-step
global brightness control (BC) function. The maximum current value
of all 48 channels can be set with an 8-step maximum current
control (MC) function. The device has two error flags: LED open
detection (LOD) and LED short detection . The error flags can be
read via a serial interface port. The device also has a power-save
mode that sets the total current consumption to 7 µA (typ) when all
outputs are off.