DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12 Page 9 of 96 2008-08-26
Chapter What is new
interface
Table 23: Pin assignment of the SPI interfaces X510 – corrected pin names
5.1 Table 32: Overview of switch positions – corrected the functions of several switches
Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v03
New document: "
DSB75 Development Support Board Rev. B1 Hardware Description" v04
Chapter What is new
1.4 Updated table: “Terms and Abbreviations”
2.5 Deleted “for ORGA test device” in table 2, row “SIM”
3.3 Deleted line: “It is important to switch the used GPIO lines to the LED driver (S450 –
S459 pos.3).”
3.6.2 Updated table 12. Added description for pin 1 – 8 (X700), pin 1 – 7, 9 (X701)
3.6.2.2 Added “The plug of “Siemens Car Kit portable HKP-500” is compatible to Lumberg
connector X701. The plug of “Siemens Car Kit Portable” is compatible to Lumberg
connector X700.
3.6.3 Modified figure: ”Circuit of microphone feeding bridges”
3.8 Corrected switch position for a direct connection of the USB lines to the GSM module.
Table 14: deleted column “Remark”
3.9 Deleted section “I2C is a serial, 8-bit oriented data transfer bus for bit rates up to 400
kbps in Fast mode. It consists of two lines: the serial data line I²CDAT and the serial
clock line I²CCLK. The electrical characteristics comply with the I²C standard.”
Deleted section “A master is the device which initiates a data transfer on the bus and
generates the clock signals to permit that transfer. At this time, any device addressed
is considered a slave. The master can operate as a master transmitter or as a master
receiver.”
Changed: VEXT to VDD
Modified figure: “I²C interface”
Corrected table 15: Pin assignment of the I²C interface X511
3.10 Modified figures: “SD card interface” and “Location of slide switches”
3.11 Modified figure: “SPI interfaces”
Corrected figure: “SPI interfaces location and related switches”
3.12 Deleted list item “The filter characteristic depends on the signal frequency range.”
Added new figure: “PWM filter characteristics”
Modified figures: “Analog interface” and “Analog interface location and related
switches”
3.14 Modified figure: “Power supply interfaces”
3.14.1 Corrected Table 25, row “GSM module supply”: 4.7F to 4700µF.
3.14.3.2 Modified figure: “Schematic of charging circuit”
3.14.5 Replaced “slide switches” with “jumpers”
Deleted constraints: “The maximum voltage is set only via the slide switches, it cannot
be adjusted via the resistors.
4.1 Modified figure: “ASC signal indication circuit”
4.2 Modified figure: “GPIO signal indication circuit”
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