ISL98001 Datasheet, PDF (30/31 Pages) Intersil Corporation – Triple Video Digitizer with Digital PLL

ISL98001
1
0
A7
A6
1
0
D7
D6
Signals from
the Host
SDA Bus
Signals from
the ISL98001
START Command
ISL98001 Serial Bus
0
1
1
0
Signals the beginning of serial I/O
R/W
A
0
(pin 48)
ISL98001 Serial Bus Address Write
This is the 7-bit address of the ISL98001 on the 2-wire bus. The
address is 0x4C if pin 48 is low, 0x4D if pin 48 is high. R/W = 0,
indicating next transaction will be a write.
A5
A4
A3
A2
START Command
ISL98001 Serial Bus
0
1
1
0
A1
A0
R/W
A
1
(pin 48)
ISL98001 Register Address Write
This sets the initial address of the ISL98001’s configuration
register for subsequent reading.
Ends the previous transaction and starts a new one
ISL98001 Serial Bus Address Write
This is the 7-bit address of the ISL98001 on the 2-wire bus. The
address is 0x4C if pin 48 is low, 0x4D if pin 48 is high. R/W = 1,
indicating next transaction(s) will be a read.
ISL98001 Register Data Read(s)
D5
D4
D3
D2
D1
D0
This is the data read from the ISL98001’s configuration register.
(Repeat if desired)
Note: The ISL98001’s Configuration Register’s address pointer
auto increments after each data read: repeat this step to read
multiple sequential bytes of data from the Configuration Register.
STOP Command
Signals the ending of serial I/O
S
T _{Serial Bus}
A
R
Address
T
Register
Address
R
E
S
T Serial Bus
A _Address
R
T
Data
Read*
S
T
O
AP
C
100110A0 aaaaaaaa 100110A1
K
A
A
C
C
A
C
d
d
d
d
d
d
d
d
K
K
K
* The data read step may be repeated to read
from the ISL98001’s Configuration Register
sequentially, beginning at the Register
Address written in the two steps previous.
FIGURE 13. CONFIGURATION REGISTER READ
30
FN6148.5
September 21, 2010