1.Product description
The 4-port FXS module is internally integrated with functional modules such DSP(Digital Single Processor) ,codec, SLIC(Subscriber Line interface circult),Interface protection,DC/DC conventer,providing all port functions required by 4-port FXS interface.FXS module adopts 3.3V and 12V mixed power supply method,3.3V is the internal working voltage,the 12V power supply is converted into VBAT to power supply by internal DC/DC converter for SLIC and external feeding and ring.FXS module can confirgure and control parameters such as cording mode,interface impedacne,feeding,ringing,DTMF,etc. by SPI interface,FXS module communicates with external data through PCM/GCI data interface,and the clock frequency and time slot allocation of the interface are flexibly configured.
2.Main function
* single module integrates 4-ports FXS interface circuits
* the seven functions of BORSCHT required by the subscriber line interface circuit,feeding, overvoltage protection, ringing, monitoring, encoding and decoding, mixing and testing functions
* built-in DC/DC converter,the module completes the conversion of VBAT power required for feeding and ringing.
* support DTMF production and detection functions
* support Caller ID production and on-hook transmission
* support the production of signal tone(dial tone,busy tone,ring back tone,etc.)* support A-law PCM coding,u-law PCM coding and 16-bit linear coding and decoding
* parameters are programmable such as interface impedance, feed (feed current), ringing (frequency, amplitude, waveform) and coding (coding format, gain, time slot).
* intelligent dynamic power adjustment, low heat generation
3.Product specification
3.1 Power supply
3.2 FXS interface
3.3 PCM interface
* Total line rate: 512Kbps~8.192Mbps
* Frame rate: 8Khz
* Slot width and position: configurable
3.4 SPI interface
* Total line rate: up to 16Mbps
* Operation method: support 8bit and 16bit
3.5 Reset signal
* Function: external reset control for the module, low level is effective, and pulse width is required to be ≥ 1ms
* Type: input, 10K Ω pull-up resistance inside the module
* Code type: NRZ code
* Signal level: TTL/CMOS (3.3V)3.6 Working environment
* working temperature: -40~85℃
* storage temperature: -50~85℃
3.7 Product size: 56x36x12.16mm
4.Product application
X4S04 can be applied to the following devices:
* SPC switch
* VOIP gateway and Routing device* Voice gateway
* Voice dispatching device
* xDSL Integrated Access Devices (IADs)
* Optical communication network terminal/unit* Wireless fixed terminal (WFT)
