TLC59108 Datasheet, PDF (16/31 Pages) Texas Instruments – 8-BIT Fm+ I2C-BUS CONSTANT-CURRENT LED SINK DRIVER

TLC59108
SLDS156 – MARCH 2009 .................................................................................................................................................................................................. www.ti.com
I²C Bus Subaddress Registers 1 to 3 (SUBADR1 to SUBADR3)
Table 9 describes I²C Bus Subaddress Registers 1 to 3.
Table 9. SUBADR1 to SUBADR3 – I²C Bus Subaddress Registers 1 to 3 (Address 0Eh to 10h) Bit
Description
ADDRESS REGISTER
BIT
7:5
0Eh
SUBADR1
4:1
0
7:5
0Fh
SUBADR2
4:1
0
7:5
10h
SUBADR3
4:1
0
SYMBOL
A1[7:5]
A1[4:1]
A1[0]
A2[7:1]
A2[4:1]
A2[0]
A3[7:1]
A3[4:1]
A3[0]
ACCESS ⁽¹⁾
R
R/W
R
R
R/W
R
R
R/W
R
VALUE
100 ⁽²⁾
1001 ⁽²⁾
0 ⁽²⁾
100 ⁽²⁾
1010 ⁽²⁾
0 ⁽²⁾
100 ⁽²⁾
1100 ⁽²⁾
0 ⁽²⁾
DESCRIPTION
Reserved
I²C bus subaddress 1
Reserved
Reserved
I²C bus subaddress 2
Reserved
Reserved
I²C bus subaddress 3
Reserved
(1) R = read, W = write
(2) Default value
Subaddresses are programmable through the I²C bus. Default power-up values are 92h, 94h, 98h. The
TLC59108 does not acknowledge these addresses immediately after power-up (the corresponding SUBx bit in
MODE1 register is equal to 0).
Once subaddresses have been programmed to valid values, the SUBx bits (MODE1 register) must be set to 1 to
allows the device to acknowledge these addresses.
Only the 7 MSBs representing the I²C bus subaddress are valid. The LSB in SUBADRx register is a read-only bit
(0).
When SUBx is set to 1, the corresponding I²C bus subaddress can be used during either an I²C bus read or write
sequence.
LED All Call I²C Bus Address Register (ALLCALLADR)
Table 10 describes the LED All Call I²C Bus Address Register.
Table 10. ALLCALLADR – LED All Call I²C Bus Address Register (Address 11h) Bit Description
ADDRESS
REGISTER
BIT
SYMBOL ACCESS⁽¹⁾
VALUE DESCRIPTION
7:5
AC[7:5]
R
100 ⁽²⁾
Reserved
11h
ALLCALLADR
4:1
AC[4:1]
R/W
1000⁽²⁾ All Call I²C bus address register
0
AC[0]
R
0 ⁽²⁾
Reserved
(1) R = read, W = write
(2) Default value
The LED All Call I²C bus address allows all the TLC59108 devices in the bus to be programmed at the same
time (ALLCALL bit in register MODE1 must be equal to 1, which is the power-up default state). This address is
programmable through the I²C bus and can be used during either an I²C bus read or write sequence. The
register address can also be programmed as a Sub Call.
Only the 7 MSBs representing the All Call I²C bus address are valid. The LSB in ALLCALLADR register is a
read-only bit (0).
If ALLCALL bit = 0, the device does not acknowledge the address programmed in register ALLCALLADR.
Output Gain Control Register (IREF)
Table 11 describes the Output Gain Control Register.
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