Page 2 - DSB75 Development Support Board Rev. B1 Hardware Description; Strictly confidential / Released; Copyright
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 2 of 94 29.09.2005 Document Name: DSB75 Development Support Board Rev. B1 Hardware Description Version: v08 Date: September 29, 2005 DocId: DSB75_hd_v08 Status: Strictly confidential / R...
Page 3 - Contents
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 3 of 94 29.09.2005 Contents 0 Document History ......................................................................................................... 7 1 Introduction ...................
Page 4 - Adjusting the V; Figures
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 4 of 94 29.09.2005 3.14.3.2 Charging Circuit ..................................................................... 62 3.14.4 Real Time Clock Supply..........................................
Page 5 - Tables
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 5 of 94 29.09.2005 Figure 19: Location of DAI connector X703 ........................................................................... 39 Figure 20: Example for connecting measurement ...
Page 7 - Document
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s 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 Re...
Page 10 - Added information about automatic restart of the module.; Chapter
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 10 of 94 29.09.2005 Chapter What is new deactivated by the host application (e.g. if the terminal program is closed). In later releases of DSB75 this problem will be solved.” Modified fi...
Page 11 - Introduction; This document describes the; DSB75 Development Support Board; Products; Hardware Interface Description of your GSM module
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 11 of 94 29.09.2005 1 Introduction This document describes the DSB75 Development Support Board Rev. B1 The DSB75 Development Support Board is designed to assist system integrators in dev...
Page 12 - Scope of Delivery; Quantity; Terms and Abbreviations; Abbreviation
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 12 of 94 29.09.2005 1.3 Scope of Delivery Quantity Description 1 DSB75 Development Support Board 1 MiniMag antenna (850 MHz – 1990 MHz) 1 Adapter cable for MiniMag antenna 2 RF adapter c...
Page 14 - General; Key Features at a Glance; Feature
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 14 of 94 29.09.2005 2 General Overview 2.1 Key Features at a Glance Table 1: Key features Feature Implementation GSM module interface • Direct connection and mechanical fixing of GSM mod...
Page 16 - Overview; PC; GSM; Figure 1: System overview
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 16 of 94 29.09.2005 2.2 System Overview Antenna or GSMtester ASC0 2 LEDs for I 2C C OM1 C OM2 PC C O M 2 (R S -232C ) C O M 1 (R S -232C ) Lab Pow erSupply 9V...15V I2 C dev ic e M eas u...
Page 17 - Adjustable Resistors
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 17 of 94 29.09.2005 2.3 Location of Connectors, Switches, Jumpers, LEDs, Adjustable Resistors X202 X201 X205 X400 X401 X110 X120 X206X204 S112 S110 X121 S111 C413 X410 X411 X405 C415 C41...
Page 18 - Diagram; Figure 3: Block diagram
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 18 of 94 29.09.2005 2.4 Block Diagram Charging ASC1 5V DC/DC SIM 8 pin BATT+ Adj. Reg. Feeding Bridge PSU 9V USB-OTG Chip Handset AGND ASC2 (Debug) I RS232 EN 4x I RS232 SD EN 3x ASC0 Le...
Page 19 - Interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 19 of 94 29.09.2005 2.5 Interface Overview Table 2: Interfaces of the DSB75 Interface Reference number Description IGT S421 Ignition push button Emergency reset S420 Emergency reset push...
Page 21 - Description of DSB75 Interfaces; Figure 4: Pin assignment of the B2B connector
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 21 of 94 29.09.2005 3 Description of DSB75 Interfaces 3.1 GSM Module Interface (Board-to-Board Connector) The Molex board-to-board connector X100 on the DSB75 is an 80-pin double-row rec...
Page 22 - Signal name
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 22 of 94 29.09.2005 Table 3: Pin assignment of B2B connector X100 Pin no. Signal name Signal name Pin no. 80 GND GND 1 79 DAC_OUT ADC1_IN 2 78 PWR_IND ADC2_IN 3 77 TP_ENV GND 4 76 RXD2_G...
Page 23 - Points; Figure 6: Location of the test points
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 23 of 94 29.09.2005 3.2 Test Points All module pins at the B2B connector X100 are connected 1:1 to pin headers X101, X102. They may be used for connecting measurement equipment, customiz...
Page 24 - SPICS; Table 5: Pin assignment – B2B connector X100 and test points X102
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 24 of 94 29.09.2005 Table 4: Pin assignment – B2B connector X100 and test points X101 X100 pin number Signal name X101 test point Signal name X100 pin number 80 GND 40 39 GND 1 79 DAC_OU...
Page 25 - Lines; Figure 7: GPIO circuit; GPIO level; on
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 25 of 94 29.09.2005 3.3 GPIO Lines The DSB75 board has 10 GPIO facilities (see Figure 7). Which of them are used depends on the type of GSM module and the software configuration. If the ...
Page 26 - Figure 8: GPIO - location of switches and LEDs
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 26 of 94 29.09.2005 S110 X5 1 0 X5 1 1 S5 01 S5 0 0 S4 5 7 S4 5 2 S4 56 S4 5 5 S4 53 S4 5 4 S4 5 0 S4 6 0 S4 5 1 S4 61 S4 6 2 S4 64 S4 6 5 S4 6 3 S4 6 6 S4 6 9 S4 59 S4 67 S4 5 8 S4 6 8 ...
Page 27 - SIM Card Interface; Figure 9: SIM card interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 27 of 94 29.09.2005 3.4 SIM Card Interface The DSB75 has an integrated SIM card interface. An appropriate SIM card (3V or 1.8V) is required to start the GSM module. The SIM card holder X...
Page 29 - Interfaces; The DSB75 offers three asynchronous RS-232 interfaces:
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 29 of 94 29.09.2005 3.5 RS-232 Interfaces The DSB75 offers three asynchronous RS-232 interfaces: • COM1 (ASC0) • COM2 (ASC1) • COM3 (ASC2) The status of all interface lines is indicated ...
Page 31 - Table 9: Pin assignment of 1
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 31 of 94 29.09.2005 3.5.1 Serial Interface 1 (COM1) The 1 st serial interface COM1 (X201) of the DSB75 is intended for the communication between the GSM module and the host application. ...
Page 34 - Analog Audio Interfaces; Figure 14: Analog audio interface – overview
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 34 of 94 29.09.2005 3.6 Analog Audio Interfaces The DSB75 comprises two analog audio interfaces. Both audio interfaces are providing a supply circuit to feed an active microphone. Figure...
Page 36 - Audio Interface 2 (Headset or Speakerphone Operation); Headset
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 36 of 94 29.09.2005 3.6.2 Audio Interface 2 (Headset or Speakerphone Operation) The unbalanced audio interface 2 is designed for use with headsets or speakerphones. The interface is avai...
Page 37 - Operation; Figure 16: Siemens Car Kit Portable HKP-500
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 37 of 94 29.09.2005 3.6.2.2 Speakerphone Operation The recommended speakerphones which are currently available for the audio interface 2 are the “Siemens Car Kit Portable” and “Siemens C...
Page 38 - Figure 17: Circuit of microphone feeding bridges
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 38 of 94 29.09.2005 3.6.3 Microphone Circuit (Feeding Bridges) This section describes the microphone signal path through feeding bridges. The location of the audio connectors can be seen...
Page 39 - Digital Audio Interface; VDD; Figure 18: DAI interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 39 of 94 29.09.2005 3.7 Digital Audio Interface The Digital Audio Interface (DAI) can be used for acoustic approval or for transferring PCM digital audio data between the GSM module and ...
Page 41 - USB Device Interface; Figure 21: USB device interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 41 of 94 29.09.2005 3.8 USB Device Interface DSB75 supports a USB 1.1 Full Speed (12 Mbit/s) device interface. It is primarily intended for use as command and data interface and for down...
Page 46 - SD Card Interface; SD 4 bit mode; Figure 25: SD card interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 46 of 94 29.09.2005 3.10 SD Card Interface The SD card interface provides a card reader for SD (Secure Digital) memory cards. It has a smooth push-push mechanism with front cover retenti...
Page 51 - Serial Peripheral Interfaces; Table 20: Alternative configuration of SPI interface lines; SPI interfaces; I2CCLK; Figure 27: SPI interfaces
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 51 of 94 29.09.2005 3.11 Serial Peripheral Interfaces The Serial Peripheral Interface (SPI) system consists of one master device and one or more slave devices. The master is defined as a...
Page 53 - Figure 29 PWM filter characteristics
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 53 of 94 29.09.2005 3.12 Analog Interface The DSB75 provides an analog interface allowing you to efficiently evaluate the characteristics of the analog baseband codec of the GSM module: ...
Page 54 - CO; Pin
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 54 of 94 29.09.2005 B2B X100 X101 DACOUT AD1_INAD2_IN DACOUT AD1_INAD2_IN 79 41 23 38 40 3735 X551 1 3 1 3 X552 X560 X561 X562 GND Filter: Test point strips 1 2 1 2 D A CO UT _F DACOUT_F...
Page 56 - Power Supply Interfaces; Figure 32: Power supply interfaces
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 56 of 94 29.09.2005 3.14 Power Supply Interfaces The constant voltage supply on the PCB provides all the supply voltages required for operating DSB75 and the GSM module. The power supply...
Page 58 - Power Supply Unit
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 58 of 94 29.09.2005 3.14.1 Internal Supply Voltages This section describes the internal supply voltages generated by the power supply unit of DSB75. A simplified block diagram of the pow...
Page 59 - AUDIO
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 59 of 94 29.09.2005 AUDIO GND 100R R750 R751 100R GND GND 5V0_I C 752 100µF C 753 100µF GND C 751 100N C 750 100N 5V0 Figure 35: Schematic for audio supply (5V0_I) 3V3_4V5 GND GND 1K R4 ...
Page 60 - Power Supply for DSB75 and GSM Module
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 60 of 94 29.09.2005 3.14.2 Power Supply for DSB75 and GSM Module The voltage provided by the 9V…15V PSU generates all supply voltages required for the DSB75 and the connected GSM module ...
Page 61 - Battery Powered Operation of GSM Module; Figure 37: Battery screw terminal; Function; Lithium Ion with 10k NTC
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 61 of 94 29.09.2005 3.14.3 Battery Powered Operation of GSM Module The external battery connects to the screw terminal block X602 (see Figure 37). Figure 37: Battery screw terminal For b...
Page 62 - Name; Circuit; . The value of R604 is dimensioned for driving the maximal fast
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 62 of 94 29.09.2005 Table 27: Pin assignment of the X700 jack for the plug-in charger Pin no. Name I/O Description 1 GND - Ground 2 R - 4.7k resistor to pin 3 (necessary for old charger ...
Page 63 - Current calculation:; @ Jumper X600 closed; Figure 38: Schematic of charging circuit
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 63 of 94 29.09.2005 The battery voltage is measured at the VSENSE line. The battery temperature is measured at the BATTEMP line (voltage drop at NTC in battery pack). The diode V603 prev...
Page 64 - Supply Voltage for the GSM Module; For test purposes, the V
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 64 of 94 29.09.2005 3.14.5 Adjusting the V BATT+ Supply Voltage for the GSM Module For test purposes, the V BATT+ voltage supplied to the GSM module can be adjusted using jumpers and var...
Page 65 - Status; Figure 40: Location of LEDs
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 65 of 94 29.09.2005 4 Status LEDs The DSB75 comprises several status LEDs. The position, the corresponding signal and the color of the LEDs can be seen in Figure 40. SYNC T X D2 / G P IO...
Page 66 - Indication of Asynchronous Serial Interface Signals; Figure 41: ASC signal indication circuit; Indication of GPIO Signals and SYNC; Figure 42: GPIO signal indication circuit
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 66 of 94 29.09.2005 4.1 Indication of Asynchronous Serial Interface Signals All signals of the asynchronous interfaces ASC0, ASC1 and ASC2 are connected to buffers which drive 16 indicat...
Page 67 - Indication of Power
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 67 of 94 29.09.2005 4.3 Indication of Power There are two power control LEDs on the DSB75. The green power control LED V431 is connected to the DSB75 supply voltage 3V0 which is always a...
Page 68 - Overview of Switches and Jumpers; Overview of Switches; Table 30: Overview of switch positions
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 68 of 94 29.09.2005 5 Overview of Switches and Jumpers This section provides an overview of all switches and jumpers located on DSB75. The exact location of each switch and jumper is sho...
Page 71 - Disconnects voltage VMIC; connected to the pin headers X101, X102.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 71 of 94 29.09.2005 Function Reference Switch position 1 Switch position 3 S710 1) S711 Disconnects a speaker connected to the Lumberg connector X700 or X701 (audio interface 2) Activate...
Page 73 - Overview of Jumpers
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 73 of 94 29.09.2005 5.2 Overview of Jumpers Table 31: Overview of jumpers Function Referenc e Jumper set Jumper not set X120 1) Voltage that is delivered by an USB host connected to X110...
Page 74 - Figure 44: Location of jumpers
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 74 of 94 29.09.2005 X500 X421 X420 X710 X600 X122 X561 X562 X560 X206 X204 X203 X120 X121 X410X411 X405 Figure 44: Location of jumpers X203 X122 Figure 45: Illustration of positions to c...
Page 75 - Connecting Antenna and GSM Module to DSB75; component side of DSB75.; Figure 46: Mounting GSM module onto the DSB75
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 75 of 94 29.09.2005 6 Connecting Antenna and GSM Module to DSB75 To prevent mechanical damage, be careful not to force, bend or twist the module. In order to prevent short-circuits, ensu...
Page 77 - Turn on / off the GSM Module; Plugging the USB cable:; Figure 48: Turn on circuit
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 77 of 94 29.09.2005 6.1 Turn on / off the GSM Module All the hardware driven solutions described in [1] for turning on and off the GSM module are implemented on DSB75 and can be used by ...
Page 78 - Turn off the GSM Module
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 78 of 94 29.09.2005 6.1.2 Turn off the GSM Module Normal Power-off The best and safest approach to switch off the module is using the AT command AT^SMSO. This procedure lets the GSM modu...
Page 79 - Technical Data of DSB75
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 79 of 94 29.09.2005 7 Technical Data of DSB75 Table 32: DSB75 maximum ratings Parameter Condition Min. Max. Unit Supply voltage Laboratory PSU -30 +30 V Operating temperature +15 +35 °C ...
Page 80 - required
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 80 of 94 29.09.2005 Parameters Condition Min. Typical Max. Unit Charger voltage 4.75 6.6 10 V Fast charging current (Jumper X600 not set) 450 500 550 mA Fast charging current (Jumper X60...
Page 81 - signal
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 81 of 94 29.09.2005 Parameters Condition Min. Typical Max. Unit Differential output voltage at full scale sine 1kHz 1.6 Vpp Audio interface 1 (balanced input) Handset Mode (AT^SNFS=1) Di...
Page 82 - Low high transition of this signal switches the module on.; Requirements
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 82 of 94 29.09.2005 Parameters Condition Min. Typical Max. Unit Ignition via VBUS line @USB-Interface V I min = 4V signal ~~~ |________| ~~~~~~~~~~~~~~~ | ≥ 1s | ≥ 0.5s | Rise time ≤ 1ms...
Page 83 - Appendix; List of Parts and Accessories; Description
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 83 of 94 29.09.2005 8 Appendix 8.1 List of Parts and Accessories Table 34: List of parts and accessories Description Supplier Ordering information Votronic Handset VOTRONIC Votronic HH-S...
Page 84 - Circuit Diagrams of DSB75; Figure 49: Schematic of page signals
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 84 of 94 29.09.2005 8.2 Circuit Diagrams of DSB75 06 .0 7. 200 4 net lis t1 VU SB_ 3 V 3 /s heet1 9 B /s heet1 10 C VU SB_ IN /s heet1 2 G /s heet1 4 B /s heet1 5 C 1: 1 T O P H IER AR C...
Page 85 - Figure 50: Schematic of position list
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 85 of 94 29.09.2005 po sl is t1 X 700 /s he et7 3 B X 701 /s he et7 3 D X 703 /s he et7 1 2 F X 710 /s he et7 7 B Z 110 / s h eet1 8 D 1: 1 06.07 .2004 D SB7 5 B1 T O P H IER AR C H Y L ...
Page 87 - Figure 52: Schematic sheet 2 – ASC0, ASC1 and ASC2 interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 87 of 94 29.09.2005 sh ee t2 06. 07. 2004 SC HE M A T IC ASC 2 ASC 0 9pol S ubD R 244 220R DS B7 5 9pol SubD ASC 1 9pol SubD TO P H IER AR CH Y LE VE L 1: 1 B1 S200 1 2 3 LYT 679- C O V2...
Page 88 - Figure 53: Schematic sheet 3 – SD card reader
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 88 of 94 29.09.2005 sh eet 3 SC H E M A TI C T O P H IE R AR C H Y L E V E L DS B 75 1: 1 06 .0 7. 2004 B1 GN D C30 5 100 P GN D 33P C30 3 NB_ GN D GN D C30 4 220 N 0R R 303 33P C30 2 NB...
Page 89 - Figure 54: Schematic sheet 4 – GPIOs, power supply
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 89 of 94 29.09.2005 GND VDD GN D N41 2 GND 3 1 4 5 2 C417 1U C416 10N GN D VI N VE N BY PAS S VO U T LP 3985 IM 5X -2 .9 5V 0 VDD_ EN 3V 3_4V 5 GND GND C415 C414 4700 U 4700 U C412 10U C...
Page 91 - Figure 56: Schematic sheet 6 – charging interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 91 of 94 29.09.2005 sheet6 DSB75 SCHEMATIC TOP HIERARCHY LEVEL CHARGE B1 ACCU 1:1 VIN POW ER GN D EN GND X600 POW ER B A USER APPR'D E D C CHARGEGATE VSENSE ISENSE 0R VBAT BATTEMP 1 2 3 ...
Page 92 - Figure 57: Schematic sheet 7 – audio interface
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 92 of 94 29.09.2005 1 L733 L732 L731 L730 X50 2 600 R /1 00M HZ 600 R /1 00M HZ 600 R /1 00M HZ 600 R /1 00M HZ 2 1 3 4 GN D GN D GN D R737 2K2 10N C739 C738 C736 C73 5 C737 C734 10N 1N ...
Page 93 - Floor Plan of the DSB75; Figure 58: Floor plan top side
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s DSB75_hd_v08 Page 93 of 94 29.09.2005 8.3 Floor Plan of the DSB75 X202 X201 L203 R211 R209 R210 R208 R250 C209 C206 D201 C205 R221C207 C208 C230 R260 R261 R262 D220 X205 L201 R207 R203 R206 R202 R205 R201...