ISL97635A_14 Datasheet, PDF (17/28 Pages) Intersil Corporation – SMBus 6-Channel LED Driver

ISL97635A
SMBCLK
V_IH
V_IL
t_LOW
SMBDAT
V_IH
V_IL
t_HD:STA
t_BUF
P
S
t_R
t_F
t_HD:DAT
t_HIGH
t_SU:DAT
t_SU:STA
S
NOTES:
SMBus Description
S = start condition
P = stop condition
A = acknowledge
A = not acknowledge
R/W = read enable at high; write enable at low
FIGURE 19. SMBUS INTERFACE
t_SU:STO
P
1
7
S
SLAVE ADDRESS
Master to Slave
Slave to Master
1
1
8
1
W
A
COMMAND CODE
A
8
DATA BYTE
FIGURE 20. WRITE BYTE PROTOCOL
1
1
A
P
1
7
1
1
8
1
1
8
1
1
S SLAVE ADDRESS W
A COMMAND CODE A
S SLAVE ADDRESS R
A
Master to Slave
Slave to Master
8
DATA BYTE
1
1
A
P
FIGURE 21. READ BYTE PROTOCOL
17
FN6564.2
December 22, 2008