User Manual

ManualsBrandsSiemens ManualsElectronicsEGPRS/GSM Router

MC75 Hardware Interface Description

Strictly confidential / Draft

MC75_V00.190a Page 71 of 91 15.02.2005

Function Signal name IO Signal form and level Comment

VMIC O V

min = 2.4V

typ = 2.5V

max = 2.6V

max

= 2mA

Microphone supply for

customer feeding circuits

EPP2 O

EPN2 O

1.0954Vpp (differential) typical

3.4Vpp differential maximal

Audio mode TBD

Measurement conditions TBD

Minimum differential resp. single

ended load 27 Ohms

The audio output can directly

operate a 32-Ohm-

loudspeaker.

If unused keep pins open.

EPP1 O

EPN1 O

1.0954Vpp (differential) typical

6.0 Vp-p differential maximal

Audio mode TBD

Measurement conditions TBD

Minimum differential resp. single

ended load 7.5 Ohms

The audio output can directly

operate an 8-Ohm-

loudspeaker.

If unused keep pins open.

MICP1 I

MICN1 I

MICP2 I

MICN2 I

Full Scale Input Voltage 1.578 Vpp

0dBm0 Input Voltage 1.0954 Vpp

At MICNx, apply external bias from 1.0V to

1.6V.

Audio mode TBD

Measurement conditions TBD

Balanced or single ended

microphone or line inputs with

external feeding circuit (using

VMIC and AGND).

If unused keep pins open.

Analog

Audio

interface

AGND Analog Ground GND level for external audio

circuits

Summary of content (21 pages)

PAGE 1
MC75 Hardware Interface Description Strictly confidential / Draft s Function Signal name IO Signal form and level Comment Analog Audio interface VMIC O VOmin = 2.4V VOtyp = 2.5V VOmax = 2.6V Imax = 2mA Microphone supply for customer feeding circuits EPP2 O EPN2 O 1.0954Vpp (differential) typical 3.4Vpp differential maximal Audio mode TBD Measurement conditions TBD The audio output can directly operate a 32-Ohmloudspeaker. If unused keep pins open. Minimum differential resp.
PAGE 2
s MC75 Hardware Interface Description Strictly confidential / Draft 5.4 Electrostatic Discharge The GSM engine is not protected against Electrostatic Discharge (ESD) in general. Consequently, it is subject to ESD handling precautions that typically apply to ESD sensitive components. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates a MC75 module.
PAGE 3
MC75 Hardware Interface Description Strictly confidential / Draft 5.5 s Reliability Characteristics The test conditions stated below are an extract of the complete test specifications. Table 18: Summary of reliability test conditions Type of test Conditions Vibration Frequency range: 10-20 Hz; acceleration: 3.
PAGE 4
s MC75 Hardware Interface Description Strictly confidential / Draft 6 Mechanics 6.1 Mechanical Dimensions of MC75 Figure 35 shows the top view of MC75 and provides an overview of the board's mechanical dimensions. For further details see Figure 36. Pin 1 Pin 80 Figure 35: MC75 – top view MC75_V00.190a Page 74 of 91 15.02.
PAGE 5
s MC75 Hardware Interface Description Strictly confidential / Draft All dimensions in mm Figure 36: Dimensions of MC75 MC75_V00.190a Page 75 of 91 15.02.
PAGE 6
MC75 Hardware Interface Description Strictly confidential / Draft 6.2 s Mounting MC75 to the Application Platform There are many ways to properly install MC75 in the host device. An efficient approach is to mount the MC75 PCB to a frame, plate, rack or chassis. Fasteners can be M2 screws plus suitable washers, circuit board spacers, or customized screws, clamps, or brackets. In addition, the board-to-board connection can also be utilized to achieve better support.
PAGE 7
MC75 Hardware Interface Description Strictly confidential / Draft 6.3 s Board-to-Board Application Connector This section provides the specifications of the 80-pin board-to-board connector used to connect MC75 to the external application. Connector mounted on the MC75 module: Type: 52991-0808 SlimStack Receptacle 80 pins, 0.50mm pitch, for stacking heights from 3.0 to 4.0mm, see Figure 37 for details. Supplier: Molex www.molex.
PAGE 8
MC75 Hardware Interface Description Strictly confidential / Draft s Figure 37: Molex board-to-board connector 52991-0808 on MC75 MC75_V00.190a Page 78 of 91 15.02.
PAGE 9
MC75 Hardware Interface Description Strictly confidential / Draft s Figure 38: Mating board-to-board connector 53748-0808 on application MC75_V00.190a Page 79 of 91 15.02.
PAGE 10
MC75 Hardware Interface Description Strictly confidential / Draft 7 s Sample Application Figure 39 shows a typical example of how to integrate a MC75 module into the GSM part of a mobile application. Usage of the various host interfaces depends on the desired features of the application. Audio interface 1 demonstrates the balanced connection of microphone and earpiece. This solution is particularly well suited for internal transducers.
PAGE 11
s MC75 Hardware Interface Description Strictly confidential / Draft MC75 Application (Draft) *) IGT VCHARGE BATT+ ESD protection Rechargeable Lithium battery 0.3R SI3441DV BC847 CRS04 Vch ar ge 5.2V + 0.2V Charger 47k 2.7k NTC EMERG_RST VCC µC BATTEMP VSENSE BC847 47k 100k ISENSE PWR_IND Serial Interface ASC0 CHARGEGATE 8 7 Digital Audio VMIC (2.5V) 470R 4 Serial Interface ASC1 MC75 *) I2C 2 MICP1 100nF MICN1 2 x RP 1k VEXT (2.9V) SD memory *) card 2.
PAGE 12
s MC75 Hardware Interface Description Strictly confidential / Draft 8 Reference Approval 8.1 Reference Equipment for Type Approval The Siemens reference setup submitted to type approve MC75 consists of the following components: • Siemens MC75 cellular engine • Development Support Box DSB75 • SIM card reader integrated on DSB75 • U.FL-R-SMT antenna connector and U.FL-LP antenna cable • Handset type Votronic HH-SI-30.3/V1.
PAGE 13
MC75 Hardware Interface Description Strictly confidential / Draft 8.2 s Compliance with FCC Rules and Regulations The FCC Equipment Authorization Certification for the MC75 reference application described in Section 8.1 is listed under the FCC identifier QIPMC75 IC: 267W-MC75 granted to Siemens AG. The MC75 reference application registered under the above identifier is certified to be in accordance with the following Rules and Regulations of the Federal Communications Commission (FCC).
PAGE 14
s MC75 Hardware Interface Description Strictly confidential / Draft 9 Appendix 9.1 List of Parts and Accessories Table 20: List of parts and accessories Description Supplier Ordering information MC75 Siemens Siemens ordering number: L36880-N8810-N100 Siemens Car Kit Portable Siemens Siemens ordering number: L36880-N3015-A117 DSB75 Support Box Siemens Siemens ordering number: Votronic Handset VOTRONIC Votronic HH-SI-30.3/V1.
PAGE 15
MC75 Hardware Interface Description Strictly confidential / Draft s Table 21: Molex sales contacts (subject to change) Molex For further information please click: http://www.molex.com/ Molex Deutschland GmbH Felix-Wankel-Str. 11 4078 Heilbronn-Biberach Germany Phone: +49-7066-9555 0 Fax: +49-7066-9555 29 Email: mxgermany@molex.com American Headquarters Lisle, Illinois 60532 U.S.A. Phone: +1-800-78MOLEX Fax: +1-630-969-1352 Molex China Distributors Beijing, Room 1319, Tower B, COFCO Plaza No.
PAGE 16
MC75 Hardware Interface Description Strictly confidential / Draft 9.2 s Fasteners and Fixings for Electronic Equipment This section provides a list of suppliers and manufacturers offering fasteners and fixings for electronic equipment and PCB mounting. The content of this section is designed to offer basic guidance to various mounting solutions with no warranty on the accuracy and sufficiency of the information supplied.
PAGE 17
s MC75 Hardware Interface Description Strictly confidential / Draft Article number: 07.51.403 Insulating Spacer for M2 Self-gripping *) Length 3.0 mm Material Polyamide 6.6 Surface Black Internal diameter 2.2 mm External diameter 4.0 mm Flammability rating UL94-HB *) 2 spacers are delivered with DSB75 Support Board Article number: 05.11.209 Threaded Stud M2.5 - M2 Type E / External thread at both ends Length 3.0 mm Material Stainless steel X12CrMoS17 Thread 1 / Length M2.5 / 6.
PAGE 18
s MC75 Hardware Interface Description Strictly confidential / Draft Article number: 01.14.131 Screw M2 *) DIN 84 - ISO 1207 Length 8.0 mm Material Steel 4.8 Surface Zinced A2K Thread M2 Head diameter D = 3.8 mm Head height 1.30 mm Type Slotted cheese head screw *) 2 screws are delivered with DSB75 Support Board Article number: 01.14.141 Screw M2 DIN 84 - ISO 1207 Length 10.0 mm Material Steel 4.8 Surface Zinced A2K Thread M2 Head diameter D = 3.8 mm Head height 1.
PAGE 19
s MC75 Hardware Interface Description Strictly confidential / Draft Article number: 02.10.011 Hexagon Nut *) DIN 934 - ISO 4032 Material Steel 4.8 Surface Zinced A2K Thread M2 Wrench size / Ø 4 Thickness / L 1.6 mm Type Nut DIN/UNC, DIN934 *) 9.3 2 nuts are delivered with DSB75 Support Board Data Sheets of Recommended Batteries The following two data sheets have been provided by VARTA Microbattery GmbH. Click here for sales contacts and further information: http://www.varta-microbattery.
PAGE 20
s MC75 Hardware Interface Description Strictly confidential / Draft Figure 41: Lithium Ion battery from VARTA MC75_V00.190a Page 90 of 91 15.02.
PAGE 21
s MC75 Hardware Interface Description Strictly confidential / Draft Figure 42: Lithium Polymer battery from VARTA MC75_V00.190a Page 91 of 91 15.02.