CMX983 Datasheet, PDF (17/93 Pages) CML Microcircuits – Programmable Channel Filter

Analogue Front End (AFE) for Digital Radio
CMX983
To maximise data bandwidth across the C-BUS interface, some read and write registers are capable of data-
streaming operation. This allows a single address byte to be followed by the transfer of multiple read or write
data words, all within the same C-BUS transaction. This can significantly increase the transfer rate of large
data blocks, as shown in Figure 8.
Example of C-BUS data-streaming (8-bit write register)
CSN
SCLK
CDATA
765432107654321076543210
76543210
Address
First byte
Second byte
…
Last byte
RDATA Hi-Z
Example of C-BUS data-streaming (8-bit read register)
CSN
SCLK
CDATA
76543210
Address
RDATA Hi-Z
7654321076543210
76543210
First byte
Second byte
…
Last byte
Figure 8 C-BUS Data-streaming Operation
 2015 CML Microsystems Plc
17
D/983/6