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DSB75 Development Support Board Rev. B1 Hardware Description

Strictly confidential / Released

DSB75_hd_v08 Page 6 of 94 29.09.2005

Table 10: Pin assignment of 2nd serial interface COM2 (X202) ............................................ 32

Table 11: Pin assignment of debug interface COM3 (X205)..................................................33

Table 12: Pin assignment of handset audio interface 1 (X502)..............................................35

Table 13: Pin assignment of audio interface 2 (X700, X701).................................................36

Table 14: Pin assignment of the USC/DAI interface X703 .....................................................40

Table 15: Pin assignment of USB device interface X110.......................................................42

Table 16: Pin assignment of the I²C interface X511...............................................................45

Table 17: Pin assignment of SD card interface X301 (SD 4 bit mode) .................................. 48

Table 18: Pin assignment of SD card interface X301 (SD 1 bit mode) .................................. 49

Table 19: Pin assignment of SD card interface X301 (SPI bus mode)...................................50

Table 20: Alternative configuration of SPI interface lines.......................................................51

Table 21: Pin assignment of the SPI interfaces X510............................................................52

Table 22: Pin assignment of the analog interface ..................................................................54

Table 23: Description of power supply units...........................................................................58

Table 24: Recommended specification of the laboratory PSU...............................................60

Table 25: Connecting the laboratory PSU to X400 and X401 ................................................60

Table 26: Pin assignment of the screw terminal X602 ...........................................................61

Table 27: Pin assignment of the X700 jack for the plug-in charger........................................62

Table 28: Pin assignment of the X701 jack for the plug-in charger........................................62

Table 29: Adjusting BATT+ voltage (3V3_4V5) .....................................................................64

Table 30: Overview of switch positions ..................................................................................68

Table 31: Overview of jumpers...............................................................................................73

Table 32: DSB75 maximum ratings........................................................................................79

Table 33: DSB75 technical data.............................................................................................79

Table 34: List of parts and accessories..................................................................................83

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