DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12 Page 10 of 96 2008-08-26
Chapter What is new
9.2 Added figures: “Schematic of page signals” and “Schematic of position list”
Modified figure: “Schematic sheet 6 – charging interface”
Preceding document: ”DSB75 Development Support Board Hardware Description", v02
New document: "
DSB75 Development Support Board Rev. B1 Hardware Description" v03
Chapter What is new
2.2 Modified figure: “System overview”
2.3 Modified figure: “Placement of connectors, switches, jumpers, LEDs and adjustable
resistors”
2.4 Modified figure: “Block diagram”
3.3 Modified figure: “GPIO circuit”
3.5.1 Corrected value of level converter D200 (COM1). Added information: “Therefore the
PWR_IND signal is used for enabling and shut down converters.”
3.5.2, 3.5.3 Corrected value of level converter D201 (COM2, COM3). Added information:
Therefore the PWR_IND signal is used for enabling and shut down converters.
3.6 Modified figure: “Analog audio interface – overview”; modified figure: “Location of the
audio connectors and switches”
3.6.2.2 New speakerphone added.
3.8 Added information about second USB interface X111. Modified figure: “USB device
interface”.
3.9 Added information about functionality of LEDs V503, V504. Modified figure: ”I²C
interface”.
3.10 Modified figure: ”SD card interface”
3.12 Modified figure: ”Analog interface”
3.14 Modified figure: ”Power supply interface”
3.14.1 Modified information in Table 25, row “Power supply of digital part of DSB75”. Added
new row in
Table 25: “Digital IO supply (VDD)””
3.14.2 Corrected information about power indication.
3.14.3 Changed information about battery operation. Added recommendations for batteries.
3.14.3.1 Added ordering number and technical data for plug-in charger. Added new table: “Pin
assignment of the X701 jack for the plug-in charger”.
3.14.3.2 Corrected: I
max
=150mV / 0.3Ohm = 500mA @ Jumper X600 open;
I
max
=150mV / 0.15Ohm =1A @ Jumper X600 closed
Modified figure: “Schematic of charging circuit”.
3.14.4 New chapter: “Real Time Clock Supply”
4.2 Modified information about indication of GPIO signals. Modified figure: “GPIO signal
indication circuit”.
4.3 Corrected information about indication of power.
4.4 New chapter: “Indication of I²C Lines”
5.1 Completely updated table: “Overview of switch positions”.
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