Evaluation Kit for CMX724x/CMX734x
PE0403
2014 CML Microsystems Plc
22
um0403/1
6.3.3. Program Serial Memory
Note: This option is not supported on PE0403.
Figure 8 Program Serial Memory Tab (not supported)
6.4.
Evaluation Tests
Before a Function Image
™ is loaded into the CMX7240/CMX7340 reference device; there is a limited
functionality that can be demonstrated directly by programming the C-BUS registers. The following
examples can be used to verify control of the CMX7240/CMX7340 via the C-BUS interface. These
registers can be programmed using the 'C-BUS Control' tab in the PE0002 software.
6.4.1. Write to and Read from a Register
Write any 16-bit number to register $C0. The data transferred to the device on the Command Data pin
looks like this:
{ C0 } { <ms byte> } { <ls byte> }
..... Command Data
The value written to this register (the Powerdown Control register) can be read back from register $C4
by issuing a single command byte, then reading two data bytes from the Reply Data pin, as follows:
{ C4 }
..... Command Data
{ <ms byte> } { <ls byte> }
..... Reply Data
Note that the power consumption of the device will increase once this register has been written to, since
some parts of the device will no longer be powersaved.
