TLC59108F_15 Datasheet, PDF (12/37 Pages) Texas Instruments – 8-Bit FM+ I2C Bus LED Driver

TLC59108F
SLDS162B – MARCH 2009 – REVISED DECEMBER 2015
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Programming (continued)
8.5.3 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.
8.5.4 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.
8.5.5 Software Reset I²C Bus Address
The address shown in Figure 9 is used when a reset of the TLC59108F needs to be performed by the master.
The software reset address (SWRST Call) must be used with R/W = 0. If R/W = 1, the TLC59108F does not
acknowledge the SWRST. See Software Reset for more detail.
R/W
1 00 10 11 0
Figure 9. Software Reset Address
NOTE
The Software Reset I²C bus address is a reserved address and cannot be use as a
regular I²C bus slave address.
8.5.6 Characteristics of the I²C Bus
The I²C bus is for two-way two-line communication between different devices or modules. The two lines are a
serial data line (SDA) and a serial clock line (SCL). Both lines must be connected to a positive supply through a
pullup resistor when connected to the output stages of a device. Data transfer may be initiated only when the bus
is not busy.
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