MAX8759 Maxim Integrated Products, MAX8759 Datasheet - Page 22

• Manufacturer Part Number: MAX8759
• Description: CCFL Backlight Controller
• Manufacturer: Maxim Integrated Products

Figure 10. SMBus Read Timing
Table 3. Commands Description
Low-Cost, SMBus, CCFL Backlight Controller
22
PROTOCOL
SMBCLK
SMBDATA
Read Only
Read Only
Read Only
Read and
Read and
Read and
Read and
SMBus
Write
Write
Write
Write
______________________________________________________________________________________
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
SU:STA
COMMAND
A
t
HD:STA
BYTE
0x00
0x01
0x02
0x03
0x04
0x05
0x06
t
LOW
STATE
B
0xFF
0x00
0x01
0x00
0x00
0xFF
POR
N/A
t
HIGH
Reserved Reserved
Reserved Reserved
ALSHL7
ALSLL7
(MSB)
MFG4
BIT 7
ALS7
BR7
t
SU:DAT
C
ALSHL6
ALSLL6
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.
MFG3
BIT 6
BRT6
ALS6
D
ALSDEL1 ALSDEL0
Reserved Reserved LAMP_STAT OV_CURR Reserved
ALSHL5
ALSLL5
MFG2
BIT 5
BRT5
ALS5
E
DATA-REGISTER BIT ASSIGNMENT
F
t
HD:DAT
ALSHL4
ALSLL4
MFG1
BIT 4
ALS4
BR4
G
ALS_CTL
ALSHL3
ALSLL3
MFG0
BIT 3
BRT3
ALS3
t
SU:DAT
I = ACKNOWLEDGE CLOCK PULSE.
J = STOP CONDITION.
K = NEW START CONDITION.
PWM_MD PWM_SEL LAMP_CTL
ALSHL2
ALSLL2
H
BIT 2
BRT2
REV2
ALS2
ALSHL1
ALSLL1
I
BIT 1
BRT1
REV1
ALS1
t
SU:STO
J
ALSHL0
ALSLL0
t
FAULT
BUF
(LSB)
BIT 0
BRT0
REV0
ALS0
K