Cinterion DSB75 - Page 5

DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
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DSB75_hd_v12 Page 5 of 96 2008-08-26
Figure 13: Recommended adapter cable from PC to COM2 on DSB75 ...............................35
Figure 14: Analog audio interface – overview.......................................................................
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Figure 15: Location of the audio connectors and switches ...................................................
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Figure 16: Siemens Car Kit Portable HKP-500.....................................................................
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Figure 17: Circuit of microphone feeding bridges .................................................................
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Figure 18: DAI interface .......................................................................................................
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Figure 19: Location and pin assignment of the DAI connector X703 ....................................
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Figure 20: Example for connecting measurement equipment...............................................
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Figure 21: USB device interface...........................................................................................
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Figure 22: Location of the USB interface, switches and jumper ...........................................
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Figure 23: I²C interface ........................................................................................................
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Figure 24: I²C interface location ...........................................................................................
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Figure 25: SD card interface ................................................................................................
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Figure 26: Location of slide switches and card reader pins ..................................................
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Figure 27: SPI interfaces......................................................................................................
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Figure 28: SPI interfaces location and related switches .......................................................
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Figure 29 PWM filter characteristics.....................................................................................
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Figure 30: Analog interface location and related switches....................................................
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Figure 31: Analog interface ..................................................................................................
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Figure 32: Power supply interfaces ......................................................................................
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Figure 33: Location of the power supply connectors, switches and jumpers.........................
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Figure 34: Input circuit schematic (5V DC/DC converter) for power supply ..........................
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Figure 35: Schematic for audio supply (5V0_I).....................................................................
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Figure 36: Schematic for GSM module supply (3V3_4V5 or BATT+) ...................................
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Figure 37: Battery screw terminal.........................................................................................
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Figure 38: Schematic of charging circuit ..............................................................................
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Figure 39: Location of jumpers and resistors for adjusting BATT+ voltage (3V3_4V5).........
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Figure 40: Location of LEDs.................................................................................................
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Figure 41: ASC signal indication circuit ................................................................................
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Figure 42: GPIO signal indication circuit...............................................................................
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Figure 43: Location, signal names and switch positions of the slide switches ......................
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Figure 44: Location of jumpers.............................................................................................
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Figure 45: Illustration of positions to cut the trace for jumpers X203 and X122....................
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Figure 46: Mounting GSM module (MC75, TC63, TC65) onto the DSB75............................
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Figure 47: Top view on DSB75 with connected GSM module (MC75, TC63 or TC65) and RF
cable .............................................................................................................................
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Figure 48: Turn on circuit .....................................................................................................
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Figure 49: Schematic of page signals ..................................................................................
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Figure 50: Schematic of position list.....................................................................................
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Figure 51: Schematic sheet 1 – B2B connector, test points, USB interface..........................
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Figure 52: Schematic sheet 2 – ASC0, ASC1 and ASC2 interface.......................................
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Figure 53: Schematic sheet 3 – SD card reader...................................................................
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Figure 54: Schematic sheet 4 – GPIOs, power supply .........................................................
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Figure 55: Schematic sheet 5 – SIM card, I2C, SPI, analog and antenna interface..............
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Figure 56: Schematic sheet 6 – charging interface...............................................................
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Figure 57: Schematic sheet 7 – audio interface....................................................................
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Figure 58: Floor plan top side...............................................................................................
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Figure 59: Floor plan bottom side.........................................................................................
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