M-GW1302S PCI-e Spec V1.0 Jullie Zheng Jullie.zheng@rejeee.com 0086 158 6180 7793 Jiangsu Rejeee Intelligent Technology Co., Ltd Nanjing, China 0 / 12 www.rejeee.
Content 1 General ........................................................................................................................ 2 1.1. Introduction ...................................................................................................... 2 1.2. Main Features .................................................................................................. 2 1.3. Diagram of the Module .................................................................................... 2 2. Interface .
1 General 1.1. Introduction M-GW1302S is Mini PCI-e board based on SX1302, with SPI interface, internal PA and LNA, half-duplex design, for customer to develop LoRa gateway quickly. SX1302 is the newest LoRa gateway chip that Semtech released, with SX1250 as RF front-end chip, supporting SF5-SF12, compared with SX1301, SX1302 has higher data communication speed rate and lower power consumption, simpler design and higher performance. 1.2. Main Features ⚫ PCI Express Mini Card 1.
2. Interface 2.1. Interface Definition M-GW1302S is based on standard Mini PCI Express interface as below: Chart 1: IO parameter Name Description DI Data Input DO Data Output IO Bidirectional input-output PI Power In Chart 2: Definition of main function pins Name Description GND 4,9,15,18,21,26,27,29,34,35,37,40,43,50 3.3V 2,24,39,41,52 PPS 19 NRESET 22 RX_ON 42 TX_ON 44 CFG_ON 46 SX_SCK 45 SX_MISO 47 SX_MOSI 49 SX_CSN 51 Chart3: Pin Details No.
4 GND GND — Ground 5 COEX2 NC — Internal dangling 6 1.
28 1.5V NC — No use 29 GND GND — Ground 30 SMB_CLK NC — 31 PETn0 RESERVED DO 32 SMB_DATA NC — 33 PETp0 NC — No use 34 GND GND — Ground 35 GND GND — Ground 36 USB_D- RESERVED IO Pass through only, Keep dangling 37 GND GND — Ground 38 USB_D+ RESERVED IO Pass through only, Keep dangling 39 3.3Vaux VCC_3V3 PI 3.3V DC power input 40 GND GND — Ground 41 3.3Vaux VCC_3V3 PI 3.
2.2. Power Interface Chart 4: Power Interface Definition Pin No. IO GND 4,9,15,18,21,26,27,29,34,35,37,40,43,50 3.3V 2,24,39,41,52 Description PI 3.3V Power Input M-GW1302S power on with DC 3.3V, Max TX currency can reach 400mA. In order to prevent voltage drop, the switching power supply or LDO used shall be able to provide sufficient current, and a tantalum capacitor or electrolytic capacitor with large capacitance value shall be added at the module power supply port.
2.4. Signal Control Chart 7: Signal control interface definition Name Pin No. I/O Description Voltage PPS 11 DI GPS time input 3.3V NRESET 13 DI Reset 3.3V RX_ON 42 DO RX indicator 3.3V TX_ON 44 DO TX indicator 3.3V CFG_ON 46 DO CFG indicator 3.3V 2.4.1. PPS Signal Support gps-pps input for receiving data packets with time stamps. 2.4.2. NRESET Signal External control circuit can realize module reset. Pull up the NRESET interface level for 0.05 ~ 0.
Pic 3: Size of RF Connector 4. Interface Electrical and RF Performance 4.1. Power Interface M-GW1302S is powered on DC 3.3V, input voltage is 3.3V±9%, input currency is min 500mA, power requirement as below: Chart 8: Power input Para Description Min Typical Max Unit VCC Power voltage 3.0 3.3 3.6 V 4.2. IO Interface M-GW1302S IO interface as below: Chart 9: IO Interface Parameter Description Min Max Unit VIH High voltage input 0.7*VCC VCC+0.3 V VIL Low voltage input -0.3 0.
VOL Low voltage 0 0.4 V output 4.3. Working Currency Chart 10: Working Currency Parameter Condition Typical Value Unit RX RX only, no TX 54 mA TX/RX RX and TX@25dBm 360 mA IDLE Idle mode 27 mA 4.4. RF Performance Chart 11: TX Power ISM Frequency Power Unit 505.5MHz 26 dBm 868.5MHz TBD dBm 915.5MHz TBD dBm Chart 12: RX Sensitivity ISM Frequency 475.5MHz 868.5MHz 915.
Pic 4: M-GW1302S Size Any connector based on standard PCI Express Mini Card can connect to this module M-GW1302S, below for your reference is 679100002 connector from Molex Chart 5: Mini PCI Express Connector 10 / 12 www.rejeee.
6. Internal Connection Below picture is the internal connection of M-GW1302S for reference: Pic 6: M-GW1302S internal connection 7. Reference Design M-GW1302S connect to main board through SPI interface, powered on through DC-AC module, customer can change accordingly to your applications. Pic 9: M-GW1302S Reference Design 11 / 12 www.rejeee.
