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DSB75 Development Support Board Rev. B1 Hardware Description
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DSB75_hd_v08 Page 7 of 94 29.09.2005
0 Document History
Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v07
New document: "DSB75 Development Support Board Rev. B1 Hardware Description" Version v08
Chapter What is new
3.6.2 Added description of EPREF.
3.6.2.2,
3.6.3
Added information about required bias voltage for speakerphone operations.
3.7 Table 14: Updated pin description of PCM interface.
Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v06
New document: "DSB75 Development Support Board Rev. B1 Hardware Description" Version v07
Chapter What is new
6.1.1 Modified section “Toggling low-high state of DTR”.
7 Table 33: DSB75 technical data: Added Ignition key, Emergency key, Ignition via
DTR, Ignition via USB
Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v05
New document: "DSB75 Development Support Board Rev. B1 Hardware Description" Version v06
Chapter What is new
8.2 Figure 56: Schematic sheet 6 – charging interface – corrected value of R604
Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v04
New document: "DSB75 Development Support Board Rev. B1 Hardware Description" v05
Chapter What is new
2.2 Modified Figure 2: Location of the connectors, switches, jumpers, LEDs and
adjustable resistors
3.1 Corrected Table 3: Pin assignment of B2B connector X100 and Table 4: Pin
assignment – B2B connector X100 and test points X101
Board-to-board connector X100 will be supplied by Molex
3.3 Added note that the status of GPIOs 1 – 6 and 9 – 10 will be indicated by LEDs.
Deleted test pin X102 for connecting measurement equipment or an external
application. Corrected Table 7: GPIO assignment and switch position
3.5.1 Table 9: Pin assignment of 1st serial interface COM1 (X201) – modified note on DTR line
3.11 Table 20: Alternative configuration of SPI interface lines – deleted GPIO as alternative
interface
Table 21: Pin assignment of the SPI interfaces X510 – corrected pin names
5.1 Table 30: Overview of switch positions – corrected the functions of several switches
- Hardware Description 1
- Contents 3
- Figures 4
- 0 Document History 7
- 1 Introduction 11
- 1.3 Scope of Delivery 12
- 1.4 Terms and Abbreviations 12
- 2 General Overview 14
- 2.2 System Overview 16
- Adjustable Resistors 17
- 2.4 Block Diagram 18
- 2.5 Interface Overview 19
- 3.2 Test Points 23
- 3.3 GPIO Lines 25
- Figure 9: SIM card interface 27
- Figure 11: RS-232 interfaces 29
- Table 9: Pin assignment of 1 31
- 3.6.2.1 Recommended Headset 36
- Figure 18: DAI interface 39
- 3.9 I²C Interface 43
- Figure 23: I²C interface 44
- 3.10 SD Card Interface 46
- 11 10 8 7 6 5 4 3 2 1 9 47
- 3.10.1 SD 4 Bit Mode 48
- 3.10.2 SD 1 Bit Mode 49
- 3.10.3 SPI Bus Mode 50
- 3.12 Analog Interface 53
- 3.13 Antenna Interface 55
- C400,401,405 58
- X602 pin. Function 61
- 3.14.3.2 Charging Circuit 62
- GSM module 63
- 3.14.5 Adjusting the V 64
- 4 Status LEDs 65
- 4.3 Indication of Power 67
- 4.4 Indication of I²C Lines 67
- 5.1 Overview of Switches 68
- 5.2 Overview of Jumpers 73
- Figure 48: Turn on circuit 77
- 6.1.3 Emergency Restart 78
- 7 Technical Data of DSB75 79
- ~~~~~~~~~~~~~~~ 82
- 8 Appendix 83
- APPR'D 84
- NB = not mounted 87
- NB_ = not mounted 88
- 8.3 Floor Plan of the DSB75 93
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