MAX14521E_15 Datasheet, PDF (11/21 Pages) Maxim Integrated Products – Quad, High-Voltage EL Lamp Driver with I2C Interface

MAX14521E
Quad, High-Voltage EL Lamp Driver
with I²C Interface
I²C Registers and Bit Descriptions
Ten internal registers program the MAX14521E.
Table 1 lists all the registers, their addresses, and power-
on reset states. All registers are read/write. Register 0x0A
is reserved as a command to update all EL peak voltage
output registers. Register 0x0B is reserved and should
not be written to.
Table 1. Register Map
REGISTER
B7
B6
B5
B4
B3
B2
B1
SYSTEM
Device ID
DEVID3 DEVID2 DEVID1 DEVID0 REV3 REV2
Power Mode
OVR
TEMP*
X
X
X
X
X
EL FREQUENCY
EL Output
Frequency
FEL7
FEL6
FEL5
FEL4
FEL3 FEL2
EL SHAPE
Slope/Shape
X
ENDAMP
X
X
SHAPE1 SHAPE0
BOOST-CONVERTER FREQUENCY
Boost-Converter
Frequency
SS1
SS0
X
FSW4 FSW3 FSW2
AUDIO
Audio Effects
FR_AM
NO_
SAMPLE
AUXDIV1
AUXDIV0
AU4
AU3
EL RAMPING TIME AND EL PEAK VOLTAGE
EL1 Ramping
Time and EL
Peak Voltage**
RT1_2 RT1_1 RT1_0 EL1_4 EL1_3 EL1_2
EL2 Ramping
Time and EL
Peak Voltage**
RT2_2 RT2_1 RT2_0 EL2_4 EL2_3 EL2_2
EL3 Ramping
Time and EL
Peak Voltage**
RT3_2 RT3_1 RT3_0 EL3_4 EL3_3 EL3_2
EL4 Ramping
Time and EL
Peak Voltage**
RT4_2 RT4_1 RT4_0 EL4_4 EL4_3 EL4_2
REV1
X
FEL1
SL1
FSW1
AU2
EL1_1
EL2_1
EL3_1
EL4_1
B0
REGISTER
ADDRESS
REV0
EN
0x00
0x01
FEL0
0x02
SL0
0x03
FSW0
0x04
AU1
0x05
EL1_0
0x06
EL2_0
0x07
EL3_0
0x08
EL4_0
0x09
POWER-ON
RESET
STATE
0xB2
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
X = Don’t Care
*Read back only.
**Send command 0Ah (update all EL ramping time and EL peak voltage registers) to have the programmed voltage effectively
applied to the EL lamp.
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