MAX8759 Datasheet, PDF (22/31 Pages) Marktech Corporate – Low-Cost, SMBus, CCFL Backlight Controller

Low-Cost, SMBus, CCFL Backlight Controller
A
B
C
D
EF
G
t_LOW tHIGH
SMBCLK
H
I
J
K
SMBDATA
t_SU:STA t_HD:STA
t_SU:DAT
A = START CONDITION.
B = MSB OF ADDRESS CLOCKED INTO SLAVE.
C = LSB OF ADDRESS CLOCKED INTO SLAVE.
D = R/W BIT CLOCKED INTO SLAVE.
t_HD:DAT
E = SLAVE PULLS SMBDATA LINE LOW.
F = ACKNOWLEDGE BIT CLOCKED INTO MASTER.
G = MSB OF DATA CLOCKED INTO MASTER.
H = LSB OF DATA CLOCKED INTO MASTER.
t_SU:DAT
t_SU:STO t_BUF
I = ACKNOWLEDGE CLOCK PULSE.
J = STOP CONDITION.
K = NEW START CONDITION.
Figure 10. SMBus Read Timing
Table 3. Commands Description
SMBus COMMAND POR
PROTOCOL BYTE STATE ^{BIT 7}
(MSB)
BIT 6
DATA-REGISTER BIT ASSIGNMENT
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(LSB)
Read and
Write
0x00
0xFF BR7
BRT6
BRT5
BR4
BRT3
BRT2
BRT1
BRT0
Read and
Write
Read Only
Read Only
Read Only
Read and
Write
0x01
0x02
0x03
0x04
0x05
0x00 Reserved Reserved ALSDEL1 ALSDEL0 ALS_CTL PWM_MD PWM_SEL LAMP_CTL
N/A
0x01
0x00
Reserved Reserved
MFG4 MFG3
ALS7
ALS6
Reserved Reserved LAMP_STAT OV_CURR Reserved
MFG2 MFG1
MFG0
REV2
REV1
ALS5
ALS4
ALS3
ALS2
ALS1
FAULT
REV0
ALS0
0x00 ALSLL7 ALSLL6 ALSLL5 ALSLL4 ALSLL3 ALSLL2 ALSLL1 ALSLL0
Read and
Write
0x06
0xFF ALSHL7 ALSHL6 ALSHL5 ALSHL4 ALSHL3 ALSHL2 ALSHL1 ALSHL0
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