Philips LC8.2HA LA Service Manual page 30

EN 30 7. LC8.2HA LA
7.2 iBoard
RS232
12V out
CVBS
IR
in/out
Figure 7-3 iBoard cell layout
2009-Apr-10
Circuit Descriptions
RS232
in/out
Figure 7-2 iBoard block diagram
18510_204_090407.eps
The iBoard intercepts the information from the IR Receiver and
has full control over its interpretation and processing. It may
also relay the same commands to the TV or send different IR
commands to the TV. The IR signal could also be in another
encoding format and bit rate, e.g. RC6MM. The iBoard also has
full control over the LED. This makes it possible to implement
within the iBoard features such as Wireless SmartLoading,
Message Blinking, power status indication, etc. These features
are implemented without additional software in the TV
Microprocessor.
The iBoard communicates with the TV in I
is also possible). The iBoard is the I
2
is the I C master. Functionally, the iBoard controls the TV and
it is the master of the TV.
The CVBS_ter signal is used as a monitor signal for automatic
channel installation, which is controlled by the microprocessor.
090407
18510_203_090407.eps
090407
2
C (but other protocol
2
C slave device and the TV