ISL59450IQZ Intersil, ISL59450IQZ Datasheet - Page 35

• Manufacturer Part Number: ISL59450IQZ
• Description: IC SWITCH VID CRSSPNT 128-MQFP
• Manufacturer: Intersil

Specifications of ISL59450IQZ

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Signals from
the Host
SDA Bus
Signals from
the ISL59450
A7
D7
1
A6
D6
0
ISL59450 Serial Address
R
A5
D5
S
T
A
T
0
a a a a a a a 0
Serial Bus
Address
(Repeat if desired)
START Command
STOP Command
35
A4
D4
0
A
C
K
A3
D3
AAAAAAAA
0
FIGURE 37. CONFIGURATION REGISTER WRITE
Register
Address
A2
D2
1
A
C
K
d d d d d d d d
Addr
A1
D1
Write*
Data
ISL59450
R/W
A0
D0
0
C
A
K
S
O
P
T
Signals the beginning of serial I/O
ISL59450 Register Data Write(s)
This is the data to be written to the ISL59450’s configuration register.
Note: The ISL59450’s Configuration Register’s address pointer auto
increments after each data write. Repeat this step to write multiple
sequential bytes of data to the Configuration Register.
ISL59450 Device Select Address Write
The first 7 bits of the first byte select the ISL59450 on the 2-wire
bus at the address set by the Address pin. R/W = 0, indicating
the next transaction will be a write.
ISL59450 Register Address Write
This is the address of the ISL59450’s configuration register that
the following byte will be written to.
Signals the ending of serial I/O
* The data write step may be repeated to write to the
ISL59450’s Configuration Register sequentially, beginning at
the Register Address written in the previous step.
February 14, 2008
FN7510.0