MAX8821 MAXIM [Maxim Integrated Products], MAX8821 Datasheet - Page 20

• Manufacturer Part Number: MAX8821
• Description: White LED Charge Pump with Mono Class D Audio Amp and Dual LDO
• Manufacturer: MAXIM [Maxim Integrated Products]

White LED Charge Pump with Mono Class D
Audio Amp and Dual LDO
Figure 8. I
Table 1. Register Map
20
LED1_CNTL
LED2_CNTL
LED3_CNTL
LED4_CNTL
LED5_CNTL
LED6_CNTL
RAMP1_CNTL
RAMP2_CNTL
RAMP3_CNTL
BLINK_CNTL
LED_EN
LDO1_CNTL
LDO2_CNTL
AUDIO_CNTL
PUMP_CNTL
SCL
SDA
______________________________________________________________________________________
NAME
A = START CONDITION
B = MSB OF ADDRESS CLOCKED INTO SLAVE
C = LSB OF ADDRESS CLOCKED INTO SLAVE
D = R/W BIT CLOCKED INTO SLAVE
E = SLAVE PULLS SMBDATA LINE LOW
t
2
SU_STA
C Timing Diagram
A
t
HD_STA
t
LOW
GROUP ADDRESS
B
(hexadecimal)
t
HIGH
0A
0B
0C
0D
00
01
02
03
04
05
06
07
08
09
0E
t
SU_DAT
C
F = ACKNOWLEDGE BIT CLOCKED INTO MASTER
G = MSB OF DATA CLOCKED INTO SLAVE (OP/SUS BIT)
H = LSB OF DATA CLOCKED INTO SLAVE
I = SLAVE PULLS SMBDATA LINE LOW
D
TABLE
10
11
12
13
14
15
16
2
3
4
5
6
7
8
9
E
F
t
TYPE
HD_DAT
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
G
LED1 current regulator control
LED2 current regulator control
LED3 current regulator control
LED4 current regulator control
LED5 current regulator control
LED6 current regulator control
LED1 and LED2 ramp control
LED3 and LED4 ramp control
LED5 and LED6 ramp control
LED5 and LED6 blink control
LED1–LED6 enable control
LDO1 control
LDO2 control
Audio amplifier, control clock, and frequency
Charge-pump control setting and temperature
derating enable/disable
H
J = ACKNOWLEDGE CLOCKED INTO MASTER
K = ACKNOWLEDGE CLOCK PULSE
L = STOP CONDITION, DATA EXECUTED BY SLAVE
M = NEW START CONDITION
I
DESCRIPTION
J
K
t
SU_STO
L
t
BUF
M