Circuit Description
VHF1 (136
‐
174 MHz)
18
SSI Interface
U1002 has a total of three McBSP interfaces: McBSP1, McBSP2 and McBSP3, and it is compatible with
various interfaces. McBSP1 is connected to the I2S interface of the audio processor, to realize two-way
transmission of digital voice and data. McBSP2 uses independent clock and frame synchronization for
transmission and reception. The SSI of the RX processor is connected to the RX end of McBSP2. U8004
is connected to the TX end of McBSP2. U1002 works in Master Mode. McBSP3 is connected to the
Option Board interface for both voice and data transmission.
USB Interface
The radio has two external 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 12 MHz in high rate
mode or 1.5 MHz in low rate mode.
Summary of Contents for MD652
Page 1: ...DIGITAL MOBILE RADIO...
Page 5: ...UHF1 400 470 MHz...
Page 15: ...Exploded View and Packaging Guide UHF1 400 470 MHz 8 3 2 Packaging Guide...
Page 53: ...43 9 PCB View Front Panel PCB View Top Layer X...
Page 54: ...44 Front Panel PCB View Bottom Layer...
Page 55: ...45 Main Board PCB View Top Layer...
Page 56: ...46 Main Board PCB View Bottom Layer...
Page 106: ...VHF1 136 174 MHz...
Page 116: ...Exploded View and Packaging Guide VHF1 136 174 MHz 8 3 2 Packaging Guide...
Page 154: ...43 9 PCB View Front Panel PCB View Top Layer...
Page 155: ...44 Front Panel PCB View Bottom Layer...
Page 156: ...45 Main Board PCB View Top Layer...
