IS31FL3193
Integrated Silicon Solution, Inc. – www.issi.com 8
Rev. C, 11/27/2014
Table 4 01h Breathing Control Register
Bit D7:D6 D5 D4 D3 D2 D1:D0
Name - RM HT - BME CSS
Default 00 0 0 0 0 00
The Breathing Control Register sets the breathing
function.
RM Ramping Mode Enable
0 Disable
1 Enable
HT Hold Time Selection
0 Hold on T2
1 Hold on T4
BME Breathing Mark Enable
0 Disable
1 Enable
CSS Channel Selection
00 OUT1
01 OUT2
10 OUT3
Others Unavailable
Table 5 02h LED Mode Register
Bit D7:D6 D5 D4:D0
Name - RGB -
Default 00 0 00000
The LED Mode Register sets operation mode of
IS31FL3193.
RGB RGB Mode Selection
0 PWM Control Mode
1 One Shot Programming Mode
Table 6 03h Current Setting Register
Bit D7:D5 D4:D2 D1:D0
Name - CS -
Default 000 000 00
The Current Setting Register stores the maximum
current setting, I
MAX
, for all of the LED output channels.
CS Current Setting
000 42mA
001 10mA
010 5mA
011 30mA
1xx 17.5mA
Table 7 04h~06h PWM Register(OUT1~OUT3)
Bit D7:D0
Name PWM
Default 0000 0000
The value in the PWM Registers modulate the RGB
LEDs in 256 steps.
The value of the PWM Registers decide the average
output current of OUT1~OUT3. The average output
current may be computed using the Formula (1):
7
0
2*][
256
n
n
MAX
OUT
nD
I
I (1)
Where D[n] stands for the individual bit value, 1 or 0, in
location n.
For example: if D7:D0 = 10110101,
I
OUT
= I
MAX
(2
0
+2
2
+2
4
+2
5
+2
7
)/256
I
MAX
is set by Current Setting Register.
07h PWM Update Register
The data sent to the PWM Registers and the LED
Control Registers will be stored in temporary registers.
A write operation of “0000 0000” to the Update
Register is required to update the registers (04h~06h,
1Dh).
Table 8 0Ah~0Ch T0 Register (OUT1~OUT3)
Bit D7:D4 D3:D0
Name T0 -
Default 0000 0000
The T0 Registers set the T0 time in One Shot
Programming mode.
T0 T0 Setting
0000 0s
0001 0.13s
0010 0.26s
0011 0.52s
0100 1.04s
0101 2.08s
0110 4.16s
0111 8.32s
1000 16.64s
1001 33.28s
1010 66.56s
Others Unavailable
