DATASHEET SC14CVMDECT Cordless Voice Module General description n n n n n n n n n n n n The SC14CVMDECT is a member of the Cordless Module family with integrated radio transceiver and baseband in a single package. It is designed for hosted and embedded cordless voice and data applications in the DECT frequency band. Its simple to use AT Commands set allows setting up of a wireless link between 2 or more nodes without detailed knowledge of the DECT protocol.
1.0 Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . 3 8.0 Audio Level Adjustment . . . . . . . . . . . . . . . . . . . 37 1.1 PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 3 8.1 PP AUDIO LEVEL . . . . . . . . . . . . . . . . . . . . . . 37 8.2 FP AUDIO LEVEL) . . . . . . . . . . . . . . . . . . . . . 37 2.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9.
SC14CVMDECT 1.0 Connection Diagram M L K J H G F E D C B A 12 11 10 9 8 7 6 5 4 3 2 1 Figure 1 Connection Diagram (Bottom View) 1.1 PIN DESCRIPTION Table 1: Pin description In/ Out Iout Drive (mA) GND - - - Ground GND - - - Ground Pin Module Pin name A1 A2 Reset Description State A3 GND - - - Ground A4 NC - - I leave unconnected A5 VDDIO I - - Supply voltage for internal QSPI and data flash. Must be connected to VDD (1.8V).
SC14CVMDECT Table 1: Pin description (Continued) In/ Out Iout Drive (mA) Pin Module Pin name B5 GND - - - B6 P2[6]/INT6 / WTF_IN IO 2 I-PU I/O port INT6: Interrupt Input. WTF_IN: - B7 P0[5] / SPI_CLK IO 8 I-PU I/O Port SPI Clock B8 GND - - - B9 P0[1] / URX IO 8 I-PD (10k) B10 VBATT I - - Reset Description State Ground I/O port UART Serial In Secondary supply voltage. Connect to VCCRF.
Pin Module Pin name In/ Out Iout Drive (mA) D4 CHARGE I - I-PD (270k fixed pulldown) D5 GND - - - Ground D6 GND - - - Ground D7 GND - - - Ground D8 GND - - - Ground D9 P2[4]/SCL1/ PCM_DO IO 8 I-PU D10 VDD O - - D11 P2[5]/PCM_FSC IO 8 I-PU Reset Description State Charger connected indication. Switches on the device if voltage > 1.5v. Must be connected to charger via resistor R>(Vcharger_max3V)/10 mA (round to next largest value in range).
Pin Module Pin name F7 ULP_MAIN_CTR L F8 NC F9 In/ Out Iout Drive (mA) Reset Description State - I-0 Ultra Low Power Main Control Ultra low power is not supported by the software, connect to gnd.
SC14CVMDECT Table 1: Pin description (Continued) Pin Module Pin name J7 GND J8 P2[1] / PWM1 / LED4 J9 In/ Out Iout Drive (mA) Reset Description State - - Ground 8 I I/O Port PWM1: Pulse Width Modulation output LED4: 2.
Introduction 2.1 SCOPE The SC14CVMDECT is a programmable DECT module for voice and low data rate services. The internal software-stack receives commands and data from the application, for instance to setup a link to other modules. The user interface can be implemented on the module itself or on anexternal host processor. The internal FLASH provides user space where custom applications can be located.
SC14CVMDECT 3.0 Cordless Voice Module functionality This section describes the key functions and features supported by the SC14CVMDECT as shown in Figure 2. UART interface to host AT commands FLASH EEPROM User SW UART XTAL AT command interpreter Protocol Stack DSP Radio Codec DECT MIC LSR SPI Ports Headset Control Figure 2 SC14CVMDECT functional overview 3.1 MODULE HARDWARE The SC14CVMDECT internal hardware consist of: • A UART for communication to a host. 3.
Ports SC14CVMDECT 3.4 PORTABLE PART CONFIGURATION A Portable Part configuration with SC14CVMDECT requires additional external parts as shown in Figure 3. . PCM Loudspeaker (optional) UART (optional) MCU SC14CVMDECT Earpiece (handset speaker) MIC2 Headset (optional) Figure 3 PP Configurations Table 2 provides the overview of the supported interfaces for a Portal Part.
SC14CVMDECT •PCM interface (one channel) •Walky Talky mode (currently not supported*) •Low Speed Data (1.6kbit) •LU10 data channel (54kbit/sec) (Currently not supported*) * Expected in Q2 2012 Cordless Voice Module © 2011 SiTel Semiconductor B.V. Company Confidential 11 August 19, 2011 v1.2.
SC14CVMDECT 3.5 FIXED PART CONFIGURATION A Fixed Part configuration with SC14CVMDECT requires additional external parts as shown in Figure 4. .
SC14CVMDECT •Baby Monitor (currently not supported*) •PCM interface (4 channels) •Low Speed Data (1.6kbit) •LU10 data channel (54kbit/sec) (Currently not supported*) •Base Station For Sensor applications (Currently not supported*) * Expected in Q2 2012 Cordless Voice Module © 2011 SiTel Semiconductor B.V. Company Confidential 13 August 19, 2011 v1.2.
SC14CVMDECT 3.6 LIGHT DATA APPLICATION The SC14CVMDECT supports Low Data Rate (LDR) transmission up to 1.6 kbits/s. Packets with a length of upto 30 bytes payload can be transmitted and received. One SC14CVMDECT is configured as FP and the others are configured as PPs (Figure 5). The host sends/receives AT commands (over UART) to/from PP or FP as shown in Table 4.
SC14CVMDECT 3.7 FUNCTIONAL OVERVIEW Table 5: Functional overview Supported Functionality Remark Standard FP audio control feature: Call handling PP to FP, FP to PP Yes Intercom No PP to FP, FP to PP Conference call No Call forwarding No Transfer call between PPs not possible. Page call Yes FP pages all PPs (PP locator) Protocol Manual registration Yes Number of registered PPs per FP Yes 1 to 6 Low rate data transfer Yes 1.
SC14CVMDECT 4.0 Functional description 4.1 UART INTERFACE The UART isnormally used for AT commands, but can also be used for software upgrades and debugging. The UART is a full duplex UART with frame type: 1 start bit, 8 data bits (LSB first), 1 stop bit, no parity and a baud rate of 115.200 kBaud The UART hardware interface uses 3 wires (see Figure 6) . Figure 6 UART hardware configuration Caution: All signals are 1.8 V. An external V.
4.3.1 Microphone supply connection For active microphones a voltage source with high supply voltage rejection ratio is provided on supply pins VREFp/VREFm. Filtering of internal and external reference voltages is provided with internal capacitor. No external capacitor shall be connected to the VREFp. To avoid audible switching noise it is important that the ground supply signals are directly “star point” connected to the VREFm and not via a common ground plane.
Audio Modes The Alert state is for tone playing and is entered automatically when tones are played using the API calls. The Alert state can originate from idle earpiece, handsfree or headset state The PP audio handling consists of four audio states. In these states the audio subsystem is configured for a certain audio mode: 1. Idle state (not relevant for microphone configuration) 2. Earpiece Mode (Handset Speaker) SC14CVMDECT 4.3.2 3. Handsfree or Speakerphone Mode 4.
PP Audio Codec adjustment 4.3.6 The audio codec settings for the loudspeaker and Microphone must be preconfigured in the EEPROM for each mode. The EEPROM parameter fields for Audio.Earp.xxx, the Audio.Heads.xxx and Audio.SpkPh.xxx have a default value but may be modified to tune the settings. 4.3.4 In Earpiece mode (Handset Speaker) an artificial sidetone is generated. The level of the sidetone can be adjusted and setup in the EEPROM through parameter fields Audio.Earp.Vol.
Sidetone EQ EC Vol. ctrl tonegen Tx_out nc100Hz EQ Rx_in SC14CVMDECT . Figure 11 PP Audio Routing 4.3.9 PP Audio equalization registered PPs. FP paging does not establish a normal audio connection and is terminated when answered by the PP. In FP Speakerphone mode a voice call can be established when the paging is answered. To enable adjustments of the frequency response the PP contains four programmable filters: 2 in RX direction and 2 in TX direction (see Figure 11). 4.4.
When the SC14CVMDECT is configured as a PP, the clock has the same accuracy as the FP clock. But, when the PP synchronises with a FP, the PP crystal is synchronized with the FP crystal and the PP clock will change accordingly. To adjust the clock in the base station, a service connection can be setup which can be set by commands from the PP. The clock can also be read and set directly from an external microprocessor or through the MMI software on the FP base.
4.7.3 Pre-amble Antenna diversity The SC14CVMDECT protocol supports the DECT GAP standard. DECT TBR22 GAP type approval however is optional. To optimize the audio quality caused by rapid changing radio paths (fading), the SC14CVMDECT supports pre-amble antenna diversity. The pre-amble diversity algorithm uses RSSI measurements to judge the radio signal strength on both antennas and, as a result of it, the choice of the best performing antenna is determined.
chapter 6.1 in EN 300 175-4. This frame has an information field of maximum 63 bytes of which maximum 52 bytes can be used for IWU data. With the SC14CVMDECT it is only possible to send 5 frames in a row without pause. The following frame must be an acknowledge-frame to secure that the internal buffers within the SC14CVMDECT are emptied. • PP to PP (point to point) • FP to PP, PP to FP • PP to all PPs (broadcast) • FP to all PPs (broadcast) All communication is routed via the FP. The FP has number #6.
SC14CVMDECT Figure 15 Handling Product Identities 4.8.2 Deregistration narrowband calls (G.726). There are two ways of deregistering a PP from an FP: G.711 – u-law, 8 kHz sample rate.Used for narrowband calls (G.726). • Remote FP and PP deregistration The correct way to deregister a PP from an FP is to deregister it remotely in the FP.
SC14CVMDECT Figure 16 PCM Interface Formats © 2011 SiTel Semiconductor B.V. Company Confidential Cordless Voice Module The MCU must make sure that the PCM data format matches the CODEC selected for the call. Modifying the CODEC requires the PCM data format to be changed too. The following figures illustrate the PCM bus with different PCM data formats (PCM CODEC’s). 25 August 19, 2011 v1.2.
SC14CVMDECT A P _ D A T A _ F O R M A T _ L IN E A R _ 8 k H z w ith 8 k H z fr a m e s y n c : PCM CLK 8 KHz FSC P C M in 1 s t fra m e C hannel 0 PCM out 1 s t fra m e C hannel 0 1 s t fr a m e C hannel 1 1 s t fr a m e C hannel 1 2 n d fra m e C hannel 0 2 n d fra m e C hannel 1 2 n d fra m e C hannel 0 2 n d fra m e C hannel 1 1 s t fra m e C hannel 0 1 s t fra m e C hannel 1 1 s t fra m e C hannel 0 1 s t fra m e C hannel 1 A P _ D A T A _ F O R M A T _ L IN E A R _ 8 k H z w ith 1 6 k H
SC14CVMDECT AP_DATA_FORMAT_G711A / AP_DATA_FORMAT_G711U with 8 kHz frame sync: PCM CLK 8 KHz FSC 2nd frame PCM in 1st frame Channel 0 1st frame Channel 1 Channel 0 PCM out 1st frame Channel 0 1st frame Channel 1 Channel 0 2nd frame 2nd frame Channel 1 2nd frame Channel 1 AP_DATA_FORMAT_G711A / AP_DATA_FORMAT_G711U with 16 kHz frame sync: PCM CLK 16 KHz FSC PCM in 1st frame Channel 0 1st frame Channel 1 1st frame Channel 0 1st frame Channel 1 PCM out 1st frame Channel 0 1st frame Channel 1
SC14CVMDECT AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 8 kHz frame sync (G.
5.1 CAT-iq also impacts the behaviour of other services in order to ensure attachment of PPs to a line, line settings and several lists properly. INTRODUCTION CAT-iq stands for Cordless Advanced Technology, Internet and Quality. It is the new global technology initiative from the DECT Forum, designed for IP-voice services in the next generation networks.
6.1 Specifications ABSOLUTE MAXIMUM RATINGS Table 7: Absolute Maximum Ratings (Note 1) Description Condition Min Max Unit VBAT 5.5 V VBATT, VCCRF, VDDPA 3.6 V VDDIO 2 V PON 5.5 V Port pins 2 V LED4, LED3 3.6 V human body model 2000 V machine model 100 V Maximum supply voltages: SC14CVMDECT 6.0 Maximum voltage on pins: ESD voltage all pins Note 1: Absolute maximum ratings are those values that may be applied for maximum 50 hours.
DIGITAL INPUT LEVELS Table 9: DIGITAL INPUT LEVELS Description Condition Min Max Units Logic 0 input level all digital pads, except PON, CHARGE 0.3 x VDD V PON VDD=1.8V 0.9 V CHARGE 0.9 V RSTn 0.2 x VDD V SC14CVMDECT 6.2 Logic 1 input level all digital pads, except PON, CHARGE 0.7 x VDD V PON 1.5 V CHARGE 1.5 V RSTn 0.8xVDD V 6.3 VDD = 1.
PARAMETER DESCRIPTION CONDITIONS C_VDDPA Decoupling capacitor on VDDPA Required when Class-D is used and guaranteed life time. (see Figure 24) MIN TYP 1 MAX UNITS F Cs_PAOUT Snubber capacitor (to reduce ringing at PAOUTp/n) Required when Class-D is used to prevent EMI and guaranteed life time. (see Figure 24) 1 nF Rs_PAOUT Snubber resistor (to reduce ringing at PAOUTp/n) Required when Class-D is used to prevent EMI and guaranteed life time.
GENERAL SPECIFICATIONS Table 13: SC14CVMDECT module Item Condition Value Unit Dimension lxwxh 25.0 x 29.0 x 2.9 mm 4.5 g -20 to +60 °C 1870 to 1930 MHz - typical outdoor 350 m - typical indoor 75 m Weight Temperature Range Frequency range According to DECT standard Antenna Range According to DECT standard; (Note 2) Standard Compliancy ETS 300 444 (DECT GAP), former TBR2214 FCC part 15 Power supply 2 or 3 cell NiCd/NiMH Note for 1 Li-Ion battery an external LDO is required. 2.
Item Conditions Min Typ Max Unit Transmit Power (NTP) DECT: 200 mW 20 23 25.5 dBm DECT6.0: 115 mW (max peak) 18.5 21 24 dBm TDMA (time division multiple access) 6xRx + 6xTx time slots per carrier Data rate Modulation depth DECT GFSK bandwidth = 20 dB < Antenna diversity Two built-in antenna’s Standard Compliancy ETS 301 406 (former TBR6) 6.8 1.
Design guidelines Headset detection boundaries can be adjusted in EEPROM. When headset indication is received from the PP Headset detection logic (future release), the Application Software can decide if audio should be switched to the headset and sends a request to the SC14CVMDECT. This section describes the software and hardware considerations taken into account when designing the target application.
• Make angle breaks on long supply lines to avoid resonance frequencies in respect to DECT frequencies. Maximum 8 cm before an angle break is recommended. • Supply lines should be placed as far as possible away from sensitive audio circuits. If it is necessary to cross supply lines and audio lines, it should be done with right angles between supply and audio lines/circuits (microphone, ear-speaker, speakerphone, etc.
SC14CVMDECT 8.0 Audio Level Adjustment 8.1 PP AUDIO LEVEL For adjusting the audio levels in the PP (SLR/TOLR) and (RLR/OLR) the related eeprom parameters can be adjusted during production. 8.2 FP AUDIO LEVEL) For adjusting the audio level in the FP (SLR/TOLR) and (RLR/ROLR) he related eeprom parameters can be adjusted during production. . Cordless Voice Module © 2011 SiTel Semiconductor B.V. Company Confidential 37 August 19, 2011 v1.2.
SC14CVMDECT 9.0 Example Application Diagram 9%$7 9%$7 - $ 9'' %DWWHU\ &RQQHFWRU *1' & X) 9 *1' ' & % & S) *1' & X) 9 & S) & S) $ *1' ( ) *1' *1' ( & ( *1' + *1' ) ) ) 5 + '1$ 5 + * '1$ ) / *1' - + - (DUSLHFH & & '1$ '1$ ) 5 . 5 / . % 5 $ *1' . 5 & .
SC14CVMDECT 10.0 Mechanical Dimensions Cordless Voice Module Figure 27 Package Outline Drawing © 2011 SiTel Semiconductor B.V. Company Confidential 39 August 19, 2011 v1.2.
partly surrounding the antennas, will normally cause a significant degradation of the coverage. 11.1 MODULE PLACEMENT ON THE MAIN BOARD In order to ensure FCC compliance, proper coverage and to avoid detuning of the antennas, it required to place the module free on the main board in relation to other surrounding materials. Place the module at the corner of the main-board as shown in Figure 28.
SC14CVMDECT 12.0 UTAM membership waiver Payment of the Up Front Membership Fee and Per Radiating Device Fees is not required from a manufacturer or distributor that uses an FCC-certified module for which such fees have been paid. Such an “FCC certified module” is defined as a device that contains the complete UPCS-compliant radio modem functionality from a supplier that has a valid UTAM Affidavit.
SC14CVMDECT 13.0 Soldering 13.1 SOLDERING PROFILE The SC14CVMDECT should be soldered using a standard reflow soldering profile and lead free solder paste as shown below. Adjustments to the profile may be necessary depending on process requirements. Reflow profile – leadfree Sn96.5-Ag3.0-Cu0.5 Temp. C° t3 250° T3 t4 220°C Meltingpoint 217°C 200° T2 190°C T1 150°C 150° 100° 50° t1 t2 0° Time t1: Max. Change in temperature t2: Time in preheat (150°C < temp.
ma sk o pen ing 1.08 0xx1 ..0800 m m . pa Cu 8000 xx01.. .800 d 01 SC14CVMDECT So lde r mm Copper pads Solder Mask Substrate Figure 30 Copper pad and Solder mask opening 13.3 STENCIL For the stencil a thickness of 0.122 mm is recommended. Recommended opening is as shown below. Stencil 0.80x0.80 Opening in stencil 1.40 x 1,40mm Cordless Voice Module Figure 31 Stencil © 2011 SiTel Semiconductor B.V. Company Confidential 43 August 19, 2011 v1.2.
• Consult the dealer or an experienced radio/TV technician for help. 14.1 FCC REQUIREMENTS REGARDING THE END PRODUCT AND THE END USER. This module is for use only in DECT / UPCS handsets and base stations. Privacy of communications may not be ensured when using this phone. A separation distance of at least 20 cm must be maintained between the base station and all persons (excluding extremities of hands, wrist and feet).
Datasheet Status Product Status Definition Advance Information Formative or in Design This data sheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This data sheet contains preliminary data. Supplementary data will be published at a later date. SiTel Semiconductor reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
