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3. TECHNICAL BRIEF
The microcontroller subsystem supports all the GSM terminal software, including the layer 1, 2
and 3 of the GSM protocol stack, the MMI, and applications software such as data services, test
and maintenance. It is tightly associated with on-chip system SRAM and also includes boot
ROM memory with a small dedicated routine to facilitate the initialization of the external Flash
Memory via code download using the on-chip serial interface to the external Flash Memory
interface.
The peripheral subsystem is composed of system peripherals such as interrupt controller, real
time clock, watch dog timer, power management and a timing and control module. It also
includes peripheral interfaces to the terminal functions: keyboard, battery supervision, radio and
display. Both the DSP and the MCU can access the peripheral subsystem via the peripheral bus
(PBUS).
For program and data storage, both the MCU subsystem and the DSP subsystem can access
the on chip system SRAM and external memory such as Flash Memory. The access to the
SRAM module is made through the RAM Bus (RBUS) under the control of the bus arbitration
logic. Similarly, access to the Flash Memory is through the parallel External Bus (EBUS).
Содержание C3100
Страница 1: ...Service Manual Model C3100 Service Manual C3100 P N MMBD0033001 Date June 2004 Issue 1 0 ...
Страница 51: ...Graph 4 15 EGSM TX 50 VCX VC2 VCX VC2 4 TROUBLE SHOOTING Graph 4 14 DCS TX ...
Страница 67: ...5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 66 5 DISASSEMBLY INSTRUCTION ...
Страница 68: ... 67 5 DISASSEMBLY INSTRUCTION Figure 5 3 Figure 5 4 ...
Страница 69: ... 68 Figure 5 5 5 DISASSEMBLY INSTRUCTION ...
Страница 70: ... 69 5 DISASSEMBLY INSTRUCTION Figure 5 6 Figure 5 7 1 3 2 4 1 2 3 ...
Страница 71: ... 70 Figure 5 8 Figure 5 9 5 DISASSEMBLY INSTRUCTION 4 2 3 1 2 1 ...
Страница 72: ... 71 5 DISASSEMBLY INSTRUCTION Figure 5 10 ...
Страница 83: ... 82 7 BLOCK DIAGRAM 7 BLOCK DIAGRAM Power supply ...
Страница 90: ... 89 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 91: ... 90 9 PCB LAYOUT ...
Страница 98: ... 97 11 3 HW Test Software for Standalone Test Setup 11 STAND ALONE TEST ...
Страница 100: ... 99 Tx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 102: ... 101 Rx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 104: ... 103 12 3 Equipment Setup Figure 12 1 Equipment Setup 12 AUTO CALIBRATION ...
Страница 107: ... 106 12 AUTO CALIBRATION ...
Страница 108: ... 107 13 EXPLODED VIEW REPLACEMENT PART LIST 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...
Страница 109: ... 108 13 EXPLODED VIEW REPLACEMENT PART LIST ...