TB2104F

2002-10-30

3

Explanation Of Operation

1. Serial data receiver circuit

· The serial data receiver circuit can be changed over to operate in the serial mode or the T-BUS mode by

switching, the AD1 / AD2 terminals.

· In T-BUS mode, the AD1 / AD2 terminals become the chip select code inputs and it becomes possible to

connect up to 8 drivers on the same bus line.

1) Input data format in serial data mode (AD1 = AD2 = “open”)

· Display data are updated when data for 20 bits are input from MSB side (HVO-20), synchronizing

with rise of CLK signal and LS input is set to “H” level after inputting data.

· When increasing driver ICs, connect them through cascade connection as shown below:

2. Input data format in T-BUS mode