AN3127
Value line evaluation board CEC demonstration
Doc ID 16896 Rev 2
4.2
Device type selection
To select the device type of the CEC device, do the following:
●
RIGHT button: select
recording
as the device type
●
LEFT button: select
tuner
as the device type
●
UP button: select
playback
as the device type
●
DOWN button: select
audio system
as the device type
The selected device type is then used in the logical address allocation algorithm to allocate
the logical address of the CEC device.
Figure 18.
Device type selection
4.3
Physical address discovery
Section 1.4.5: Discovery algorithm
is used to allocate the physical
address of each device. If no CEC error is generated, the CEC device executes the logical
address allocation algorithm.
4.4
Logical address allocation
The selected device type is used to allocate the logical address as described in
Section 1.4.7: Logical address allocation
. If no CEC error is generated, the physical and
logical addresses are displayed on the LCD. You should then press the SEL push-button to
enter the CEC menu.
Note:
1
If the selected device type is not available, the following message is displayed:
“Unregistered Device”.
In this case you have to reset the device and select another device type.
2
Whenever a new physical address is discovered, the CEC device reports the association
between its logical and physical addresses by broadcasting <Report Physical Address>.