Service Manual
Figure 7-6 Diagram of SSI Interface
U302 has a total of three McBSP interfaces: McBSP1, McBSP2 and McBSP3, compatible with various
interfaces. McBSP1 is connected with I2C of the audio processor, to realize two-way transmission of
digital voice and data. McBSP2 uses independent clock and frame synchronization for transmitting and
receiving. The SSI of the receiver processor is connected with the RX end of McBSP2, and U500 with
the TX end of McBSP2. U302 works in Master Mode. McBSP3 is connected with the Option Board
interface for both voice and data transmission.
7.4.5 USB Interface
Figure 7-7 Diagram of USB Interface
The radio has two USB interfaces, which are connected to the same USB signal port of the processor.
REF CLOCK is the reference frequency in specified mode. It should be 12MHz in high rate mode or
1.5MHz in low rate mode.
7.4.6 UART Interface
13
To Next Page
Loading...
Need help?
General
