TLC59116 Datasheet, PDF (10/30 Pages) Texas Instruments – 16-CHANNEL Fm+ I2C-BUS CONSTANT-CURRENT LED SINK DRIVER

TLC59116
SLDS157A – FEBRUARY 2008 – REVISED APRIL 2008 .................................................................................................................................................. www.ti.com
Software Reset I²C Bus Address
The address shown in Figure 6 is used when a reset of the TLC59116 is performed by the master. The software
reset address (SWRST Call) must be used with R/W = 0. If R/W = 1, the TLC59116 does not acknowledge the
SWRST. See Software Reset for more detail.
1 1 0 1 0 1 1 R/W
Figure 6. Software Reset Address
NOTE:
The Software Reset I²C bus address is reserved address and cannot be use as
regular I²C bus slave address or as an LED All Call or LED Sub Call address.
Control Register
Following the successful acknowledgement of the slave address, LED All Call address or LED Sub Call address,
the bus master sends a byte to the TLC59116, which is stored in the Control register. The lowest five bits are
used as a pointer to determine which register is accessed (D[4:0]). The highest three bits are used as
auto-increment flag and auto-increment options (AI[2:0]).
Auto-Increment
Flag
Register Address
AI2 AI1 AI0 D4 D3 D2 D1 D0
Auto-Increment
Options
Figure 7. Control Register
When the auto-increment flag is set (AI2 = logic 1), the five low order bits of the Control register are automatically
incremented after a read or write. This allows the user to program the registers sequentially. Four different types
of auto-increment are possible, depending on AI1 and AI0 values.
Table 1. Auto-Increment Options
AI2
AI1
AI0
DESCRIPTION
0
0
0
No auto-increment
1
0
0
Auto-increment for all registers. D[4:0] roll over to 0 0000 after the last register (1 1011) is accessed.
1
0
1
Auto-increment for individual brightness registers only. D[4:0] roll over to 0 0010 after the last register
(1 0001) is accessed.
1
1
0
Auto-increment for global control registers only. D[4:0] roll over to 1 0010 after the last register (1 0011) is
accessed.
1
1
1
Auto-increment for individual and global control registers only. D[4:0] roll over to 0 0010 after the last
register (1 0011) is accessed.
NOTE:
Other combinations are not shown in Table 1. (AI[2:0] = 001, 010, and 011) are
reserved and must not be used for proper device operation.
AI[2:0] = 000 is used when the same register must be accessed several times during a single I²C bus
communication, for example, changing the brightness of a single LED. Data is overwritten each time the register
is accessed during a write operation.
AI[2:0] = 100 is used when all the registers must be sequentially accessed, for example, power-up programming.
AI[2:0] = 101 is used when the four LED drivers must be individually programmed with different values during the
same I²C bus communication, for example, changing a color setting to another color setting.
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