Welcome to Shenzhen Xallcom Technology Co.,Ltd. Welcome to Shenzhen Xallcom Technology Co.,Ltd.
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
No.
Parameter
Minimum
Typical
Maximum
Unit
Remark
1
Working voltageVCC
3.15
3.3
3.45
V
2
Auxiliary voltageVDC
10.8
12
13.2
V
3
Working power supply current IVCC
-
160
-
mA
All interfaces are in the hang state
4
-
200
-
mA
4-channel off-hook, feed current 20 mA, ring impedance 1500 Ω
5
-
180
-
mA
4-channel ringing, 60VAC, 25HZ sine wave ringing current, ringing impedance 1REN
6
Auxiliary power supply current IVDC
-
60
-
mA
All interfaces are in the hang state
7
-
540
-
mA
4-channel off-hook, feed current 20 mA, ring impedance 1500 Ω
8
-
240
-
mA
4-channel ringing, 60VAC, 25HZ sine wave ringing current, ringing impedance 1REN
3.2 FXS interface
No.
Parameter
Minimum
Typical
Maximum
Unit
Remark
1
feed voltage VTR
-
-48
-
V
2
feed current ILOOP
10
20
40
mA
Configurable by SPI interface
3
Maximum ring resistance RLOOP
-
-
2000
Ω
4
Ringing voltage Vring
-
75
110
VPK
Configurable by SPI interface
5
Ring frequency
-
25
-
Hz
Configurable by SPI interface
6
Interface impedance
-
600
-
Ω
7
Transmit gain（A/D）
-
0
-
dB
Configurable by SPI interface
8
Receive gain（D/A）
-
-7
--
dB
Configurable by SPI interface
9
Frequency characteristic
-0.5
-
+0.5
dB
Frequency range 300～3000Hz
-1.4
-
+0.5
dB
Frequency range 3000～3400Hz
10
Level characteristic
-0.25
-
0.25
dB
Input level 3dB～-37dB，reference level-10dBm
-0.5
-
0.5
dB
Input level-37dB～-50dB，reference level-10dBm
-1
-
1
dB
Input level-50dB～-60dB，reference level-10dBm
11
Return loss
26
30
-
dB
frequency range 300～3400Hz
12
Quantization distortion
25
-
-
dB
Input level-45～-40 dBm0
30
-
-
dB
input level-40～-30 dBm0
35.5
-
-
dB
input level-30～3.14 dBm0
13
Idle noise
-
-
-75
dBmP
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)
