ISL34321 Datasheet, PDF (11/13 Pages) Intersil Corporation – 16-Bit Long-Reach Video SERDES with Bi-directional Side-Channel

ISL34321
Master Mode
This is a mode activated by strapping the MASTER pin to
a ‘1’ on the ISL34321 on the remote side of the
controller. This is a virtual extension of the I²C interface
across the link that allows the local processor to read and
write slave devices connected to the remote side serdes
I²C bus. No additional wires or components are needed
other than the serial link. The I²C commands and data
are transferred during video blanking causing no
interruptions in the video data. In Master mode the data
is transported across the link by the Side Channel so the
maximum throughput achievable would be the same.
The SCL and SDA frequency is adjustable through the
programming of a register.
Exposed Pad
While it is not a required electrical connection, it is
recommended that the exposed pad on the bottom of the
package be soldered to the circuit board. This will ensure
that the full power dissipation of the package can be
utilized. The pad should be connected to ground and not
left floating. For best thermal conductivity 9 - 25 vias
should connect the footprint for the exposed pad on the
circuit board to the ground plane.
VIAS
25X
COPPER PAD
FIGURE 5. LAYOUT FOR THE EXPOSED PAD
11
FN6870.1
September 23, 2010