RT4832A
Default
(Reset Value)
Address
Address Name
BIT
R/W
Description
[00] = 4MHz, [01] = 2MHz
FLED SW Freq.
FL Current Limit
7:6
5
R/W
R/W
00
1
[0] = 1.9A, [1] = 2.8A
[00000] = 32ms
…..
[01111] = 512ms
0x07
FL Strobe Timeout 4:0
R/W
01111
[11111] = 1024ms, each step = 32ms
DSV periodic mode [0] = always on if DSV is
enable, [1] = DSV periodic mode
dsv_periodic_mode
dsv_freq_pm
7
6
R/W
R/W
0
0
[0] = 20Hz, [1] = 33Hz
[0] = turn on DSV only if EN = 1, [1] = turn on DSV
only if (EN+ENP+ENM) = 1
dsv_en_mode
Reserved
5
4
3
R/W
R/W
R/W
0
0
1
0x08
--
Flash OVP shutdown enable [0]=Report only, [1] =
OVP Shutdown
fla_ovp_sden
[000] = 2.5V, [001] = 2.6V, [010] = 2.7V, [011] =
2.8V, [100] = 2.9V, [101] = 3V, [110] = 3.1V, [111] =
3.2V
FLED VIN Monitor 2:0
R/W
100
Rst_sw_all
7
6
WC
0
0
Software reset [0] = Disable, [1] = Reset
PWM Enable
R/W
[0] = PWM Ignored, [1] = PWM Enable
DSV external control enable [0] I2C control, [1]
external pin control
dsv_ext_en
5
R/W
0
Strobe Enable
Tx Polarity
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
0
1
0
1
0
[0] = I2C Flash, [1] = Strobe Flash
[0] = Active Low, [1] = Active High
[0] = Tx Ignored, [1] = Tx Enabled
[0] = Torch, [1] = Standby
0x09
Tx Enable
VIN Monitor Mode
VIN Monitor En
[0] = Disable, [1] = VIN Monitor Enabled
Software reset [0] = Disable, [1] = Reset excluding
DSV
Rst_sw
7
6
WC
0
0
[0] = FLASH channel2 enable, [1] = FLASH
channel2 disable
Fla_ch2_enb
R/W
BL OVP Disable
BLED1 En
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
[0] = Report only, [1] = OVP Shutdown
[0] = Disable, [1] = Enable
0x0A
BLED2 En
[0] = Disable, [1] = Enable
Torch/Flash
[0] = Torch, [1] = Flash
Flash Enable
Back Light Enable
[0] = Off, [1] = Enable Flash
[0] = Off, [1] = Enable Back Light
Back Light OVP
7
R
0
[0] = Normal, [1] = Fault
Flash OVP
Flash Output Short
VIN Monitor
6
5
4
3
2
1
0
R
R
R
R
R
R
R
0
0
0
0
0
0
0
[0] = Normal, [1] = Fault
[0] = Normal, [1] = Fault
[0] = Normal, [1] = VIN Monitor Threshold Crossed
[0] = Normal, [1] = Tx Event Occurs
[0] = Normal, [1] = Fault
0x0B
Tx Interrupt
FLED1/2 Short
Flash Timeout
Thermal Shutdown
[0] = Normal, [1] = Time out
[0] = Normal, [1] = Fault
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS4832A-00 January 2017
www.richtek.com
13
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
