TLC59108F Datasheet, PDF (9/27 Pages) Texas Instruments – 8-BIT FM+ I2C BUS LED DRIVER

TLC59108F
www.ti.com .................................................................................................................................................................................................. SLDS162 – MARCH 2009
APPLICATION INFORMATION
Functional Description
Device Address
Following a Start condition, the bus master must output the address of the slave it is accessing.
Regular I²C Bus Slave Address
The I²C bus slave address of the TLC59108F is shown in Figure 5. To conserve power, no internal pullup
resistors are incorporated on the hardware-selectable address pins, and they must be pulled high or low. For
buffer management purpose, a set of sector information data should be stored.
Slave Address
1 0 0 A3 A2 A1 A0 R/W
Fixed Hardware Selectable
Figure 5. Slave Address
The last bit of the address byte defines the operation to be performed. When set to logic 1, a read operation is
selected. When set to logic 0, a write operation is selected.
LED All Call I²C Bus Address
• Default power-up value (ALLCALLADR address register): 90h or 1001 000
• Programmable through I²C bus (volatile programming)
• At power-up, LED All Call I²C bus address is enabled. TLC59108F sends an ACK when 90h (R/W = 0) or 91h
(R/W = 1) is sent by the master.
NOTE:
The LED All Call I²C bus address (90h or 1001 000) must not be used as a regular
I²C bus slave address since this address is enabled at power-up. All the TLC59108Fs
on the I²C bus will acknowledge the address if sent by the I²C bus master.
LED Sub Call I²C Bus Address
• Three different I²C bus address can be used
• Default power-up values:
– SUBADR1 register: 92h or 1001 001
– SUBADR2 register: 94h or 1001 010
– SUBADR3 register: 98h or 1001 100
• Programmable through I²C bus (volatile programming)
• At power-up, Sub Call I²C bus address is disabled. TLC59108F does not send an ACK when 92h (R/W = 0)
or 93h (R/W = 1) or 94h (R/W = 0) or 95h (R/W = 1) or 98h (R/W = 0) or 99h (R/W = 1) is sent by the master.
NOTE:
The default LED Sub Call I²C bus address may be used as a regular I²C bus slave
address as long as they are disabled.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TLC59108F
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