TLC59116 Datasheet, PDF (9/30 Pages) Texas Instruments – 16-CHANNEL Fm+ I2C-BUS CONSTANT-CURRENT LED SINK DRIVER

TLC59116
www.ti.com .................................................................................................................................................. SLDS157A – FEBRUARY 2008 – REVISED APRIL 2008
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 TLC59116 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 purposes, a set of sector information data should be stored.
Slave Address
1 1 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 register): D0h or 1101 000
• Programmable through I²C bus (volatile programming)
• At power-up, LED All Call I²C bus address is enabled. TLC59116 sends an ACK when D0h (R/W = 0) or D1h
(R/W = 1) is sent by the master.
See LED All Call I2C Bus Address Register (ALLCALLADR) for more detail.
NOTE:
The default LED All Call I²C bus address (D0h or 1101 000) must not be used as a
regular I²C bus slave address, since this address is enabled at power-up. All the
TLC59116 devices on the I²C bus will acknowledge the address if it is sent by the I²C
bus master.
LED Sub Call I²C Bus Address
• Three different I²C bus addresses can be used
• Default power-up values:
– SUBADR1 register: D2h or 1101 001
– SUBADR2 register: D4h or 1101 010
– SUBADR3 register: D8h or 1101 100
• Programmable through I²C bus (volatile programming)
• At power-up, Sub Call I²C bus address is disabled. TLC59116 does not send an ACK when D2h (R/W = 0) or
D3h (R/W = 1) or D4h (R/W = 0) or D5h (R/W = 1) or D8h (R/W = 0) or D9h (R/W = 1) is sent by the master.
See I2C Bus Subaddress Registers 1 to 3 (SUBADR1 to SUBADR3) for more detail.
NOTE:
The LED Sub Call I²C bus addresses may be used as regular I²C bus slave
addresses if their corresponding enable bits are set to 0 in the MODE1 Register.
Copyright © 2008, Texas Instruments Incorporated
Submit Documentation Feedback
9