Service Manual
Baseband Section
7
When the Volume Switch is on, PWR-SW- and POWER-SW+ are at high level, and the radio powers
up. After power-on, POWER-CTL goes to high level, and POWER-KEY-DET goes to low level. During
power-off, POWER-SW+ is at low level, while POWER-KEY-DET is at high level. The system detects
power-off procedure via POWER-KEY-DET and implements the power-off procedure. Then
POWER-KEY-DET and POWER-SW+ go to low level, and the power is cut off.
3.1.3
Power Protection
Power protection includes over-current, reverse-voltage and ESD protection.
3.1.4
Power Consumption Control
OMAP can control and configure the power supply and working mode of the peripheral modules (RF
section and baseband section) via the I/O interface and serial bus, so as to reduce power
consumption.
3.2
Control Section
3.2.1
OMAP5912 Dual-core Processor
The radio uses the dual-core processor OMAP5912, which is mainly composed of ARM926EJ-S and
TMS320C55xx. ARM926EJ-S is the main controller, while TMS320C55xx is used for
modulation/demodulation and voice encoding/decoding.
Summary of Contents for PD70X Series
Page 1: ......
Page 49: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 39 ...
Page 50: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 40 ...
Page 51: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 41 ...
Page 52: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 42 ...
Page 53: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 43 ...
Page 54: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 44 ...
Page 55: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 45 ...
Page 57: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 47 ...
Page 127: ...Service Manual UHF1 400 470MHz Information 117 Transmitter Circuit ...
Page 138: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 128 ...
Page 139: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 129 ...
Page 140: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 130 ...
Page 141: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 131 ...
Page 142: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 132 ...
Page 143: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 133 ...
Page 144: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 134 ...
Page 146: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 136 ...
Page 217: ...Service Manual UHF2 450 520MHz Information 207 Transmitter Circuit ...
Page 228: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 218 ...
Page 229: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 219 ...
Page 230: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 220 ...
Page 231: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 221 ...
Page 232: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 222 ...
Page 233: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 223 ...
Page 234: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 224 ...
Page 236: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 226 ...
Page 307: ...Service Manual UHF3 350 400MHz Information 297 Transmitter Circuit ...
Page 318: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 308 ...
Page 319: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 309 ...
Page 320: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 310 ...
Page 321: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 311 ...
Page 322: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 312 ...
Page 323: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 313 ...
Page 324: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 314 ...
Page 326: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 316 ...
Page 401: ...Service Manual UHF5 806 941MHz Information 391 Transmitter Circuit ...
Page 413: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 403 ...
Page 414: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 404 ...
Page 415: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 405 ...
Page 416: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 406 ...
Page 417: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 407 ...
Page 418: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 408 ...
Page 419: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 409 ...
Page 421: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 411 ...
Page 494: ...VHF 136 174MHz Information Service Manual 484 Transmitter Circuit ...