Jiangsu JWT Electronics Shares CO.,Ltd. WIRELESS TRANSCEIVER MODULE SPEC Client： Product name：2.4G Transceiver module Part number：JRF 201203-1_V1.1 Edition：V1.
Jiangsu JWT Electronics Shares CO.,Ltd. Catalog One. product picture.......................................................................................................... 4 Two. summarize ................................................................................................................. 4 limit value .................................................................................................................. 5 major electrical parameters ...........................................
Jiangsu JWT Electronics Shares CO.,Ltd. 6、data package payload length ..................................................................................... 25 7、The state machine determines the length of the package ........................................ 26 1、Launch timing .................................................................................................... 26 2、Receive sequence .............................................................................................
Jiangsu JWT Electronics Shares CO.,Ltd. One.Product picture Picture 1-1 Two.Summarize JRF 201203 module use JD0069C chip, JD0069C chip is a single integrated wireless transceiver chip that works in the 2.4GHz world general ISM spectrum. The chip incorpor ates an rf receiver、RF Transmitter、frequency synthesize、GFSK modulator、GFSK demo dulator and other functional modules。Through the SPI、IIC interface, the output power, channel selection and protocol can be flexibly configured.
Jiangsu JWT Electronics Shares CO.,Ltd. limit value value Maximum value Unit Top -10 50 ℃ Storage Temperature Tstor -20 70 ℃ working voltage VDD 1.9 3.6 V Input rf signal strength Pin_max +10 dBm ESD(Mannequin) ESD_HBM 2 KV parameter symbol operating temperature Minimum Table 2-1 * Attention：Forcing more than one or more extreme values can lead to permanent damage to the device。 * Be careful：The chip is an electrostatic sensitive device.
Jiangsu JWT Electronics Shares CO.,Ltd. output PRF PRFC PBW1 Typical output 0 Output Power Range Carrier -24 modulated 1 20dB Mbps（1Mbps） dBm 8 dBm 1.1 MHz Receiving mode index RXSENS2 receiving sensitivity （0.1%BER） Immunity characteristics C / Ι CO Co-channel Interference C / Ι1ST Phase 1 interference lead C /Ι2ND Phase 2 interference lead C / Ι 3RD Phase 3 interference lead -89 dBm 9 dBc 5 dBc -12 dBc -24 dBc operating conditions VDD VSS VOH 1.
Jiangsu JWT Electronics Shares CO.,Ltd. Three.
Jiangsu JWT Electronics Shares CO.,Ltd. Wireless game equipment Wireless label Telemetry Wireless access Security System Intelligent sports equipment Remote Control Wireless toys Six.Description of pin function Pin number Name type functional description 1 GND GND GND 2 3V3 PWR 3.
Jiangsu JWT Electronics Shares CO.,Ltd. Seven.
Jiangsu JWT Electronics Shares CO.,Ltd. Nine.PCB-layout and installation considerations Module considerations： 1. No line under the antenna, keep the antenna part clear。 2. 3.3V power supply should be kept stable and clean, If the noise or interference of 3.3V power supply is relatively large, it is suggested that the RF module should be supplied after the RC or LC filtering. 3. The RF shield should be well grounded to improve the anti-interference ability of the module 4. Installation instructions： a.
Jiangsu JWT Electronics Shares CO.,Ltd. the module to avoid welding short circuit。 d. The MCU is used to drive software, which can communicate with other modules。 Warning: after all equipment has been installed, switch on power。 Ten.Communication Interface SPI interface SPI time-sequential format Picture 10-1 Notes: 1. SPI to drop along sampling data，rise along the change data；MCU under control SPI_MOSI be bound after SPI_CLK raise that to change the data。 2. SPI read write bit： write=0，read=1。 3.
Jiangsu JWT Electronics Shares CO.,Ltd. SPI Timing requirements Name Min Typ. Max T 250ns 1 Description Time interval between two SPI visits T 41.5ns 2 Time interval between SPI_CS and SPI_CLK T Note.1 Address and date interval T Note.1 The interval time between the high 3 4 byte and the low byte T Note.
Jiangsu JWT Electronics Shares CO.,Ltd. I2C features I2C device slave mode optional features Standard mode – 100kbps Fast mode – 400 kbps Fast mode plus – 1000 kbps High speed mode – 3200 kbps Clock stretching 10-bit slave address General call address Software reset Device id Yes Yes Yes No No No No No No I2C device address In I2C mode, the device address of the chip is as follows: A6 A5 0 A A A1 A3 A2 A4 1 SPI_MOSI decide 1 1 0 A0 0 R/W 0 0 Read=1 Write=0 Notes: 1.
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Jiangsu JWT Electronics Shares CO.,Ltd. before reset.
Jiangsu JWT Electronics Shares CO.,Ltd. 10-8 7-6 5-4 Trailer_len[2:0] Data type[1:0] packet FEC type[1:0] R/W 000: 4 bits, 1010 001: 6 bits, 101010 ....... 111: 18 bits,101010......
Jiangsu JWT Electronics Shares CO.,Ltd. 0000: 4us 0001: 6us 1111: 34us ACK When the function is turned on, the maximum retransmission： 11-8 Re_transmit_time 7-6 R/W 2H: 2 times 3H: 3 times .......
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Jiangsu JWT Electronics Shares CO.,Ltd. 001:RX_ID 010: RX_DATA 011: RX_TRAILER 100: RX_DONE 110: RX_CRC Table 11-10 AMS TEST Control Register 0x1c default: 0x4008 Bit Name R/W 15 RSSI_PDN R/W 14-0 R/W Description 1: close RSSI function 0：open RSSI function Default Optim 0 Table 11-11 Operating Control Register 0x1e default: 0x7FF4 Bit Name R/W 15-14 R/W 7FF4H Description Default Optim 1:Open software reset function, 1 is valid.
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Jiangsu JWT Electronics Shares CO.,Ltd.
Jiangsu JWT Electronics Shares CO.,Ltd. Twelve:Register default values and optimization The chip has 42 registers, and after the reset, all registers are the default values, as shown in table 12 1.
Jiangsu JWT Electronics Shares CO.,Ltd. Thirteen.Attention 1、Power and register initialization data Picture 13-1 1. Chip internal integration (POR) (if only internal reset, RST N feet only need to be raised or suspended), T1 time for power reset time, about 0.5ms 2. T2 is the crystal oscillator stabilization time, about 10ms, and then the register is initialized by the MCU 3. After the register is initialized, the chip can start transmitting or receiving data 4.
Jiangsu JWT Electronics Shares CO.,Ltd. Power-on initialization Waiting for power-on reset(T1) Wait for the crystal to stabilize(T2) Initialization register loading finished Picture 13-2 2、Enter sleep mode and wake up When the SPI CS pulls high, and the MCU writes register 0x01 [15], the chip enters the sleep mode, and the current <1uA, the value of the register in the sleep mode can be maintained. When SPI CS is low, the chip automatically wakes up into IDLE state.
Jiangsu JWT Electronics Shares CO.,Ltd. 3、Packet format Air packet format Preamble: 1~8 bytes,Can be set up. SYNC: 16/32/48/64 bits, Can be set up. Trailer: 4~18 bits, Can be set up.. Payload: TX/RX data. There are 4 data types: Raw data 8bit/10bitlinecode Manchester Interleave with FEC option CRC: 16-bit CRC is optional.
Jiangsu JWT Electronics Shares CO.,Ltd. 6、data packet payload length Two ways to determine TX/RX package length. When register 0x01[2]= 1, the internal state of the state can detect the package length according to the payload first byte data. If you want to send 8 bytes, the first byte should write 8 and the total word length is 9 bytes. When register 0x01[2]= 0, the first byte data has no special significance.
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Jiangsu JWT Electronics Shares CO.,Ltd. MCU sending data packet flow chart FIFO and PKT flags are used as interrupt signals of MCU In the above flow chart, you can send the state machine first, then send data to send FIFO, which can improve MCU efficiency, but ensure that all data is written before the packet is sent. If the time required to write is very long, you should write all the data before starting the sending state.
Jiangsu JWT Electronics Shares CO.,Ltd. 2、Receive sequence The RX reception sequence is shown below. When MCU writes register 0x00[14] to 1 and selects a good receiver channel, the chip will open RX and wait for the correct syncword. When the correct syncword is received, the chip will automatically start processing the packets. When the packet is processed, the state machine will enter IDLE. When received packets longer than 63 bytes, FIFO flag will work, meaning that the MCU must read data from FIFO.
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Jiangsu JWT Electronics Shares CO.,Ltd.
Jiangsu JWT Electronics Shares CO.,Ltd. 4、CRC16 verification This function is enabled by default。 Write register 0x01[13] to turn on or off CRC functions。 When CRC is turned on but the AUTO - ACK function is not turned on , the chip reception state is not affected by the CRC state , but the register has a CRC error status bit . After the PKT _ flag is pulled up , the MCU can read 0x16 × 15 bits to determine if the CRC is correct to determine whether the frame data needs to be read .
Jiangsu JWT Electronics Shares CO.,Ltd. The sequence diagram is as follows： Picture 13-7 Note: when register 0x01[1]=1, do not allow FIFO to be empty or overfull, the FIFO full/empty THRESHOLD can be set by the register FIFO THRESHOLD, and the optimal value is determined by the SPI speed and the MCU reading and writing FIFO speed.
Jiangsu JWT Electronics Shares CO.,Ltd. 2、fw_term_tx=0(TX) When register 0x01[2:1]=2 'b00, the system only stops firing when the register 0x00[15] tx en=0.
Jiangsu JWT Electronics Shares CO.,Ltd. 3、fw_term_tx=0 (RX) When Reg0x01[2]= 0, the chip will start receiving the package at Reg0x00[14] when it is written as 1 (RX EN= 1), and the chip will automatically set the RX to the fixed channel. After waiting for some time to stabilize the internal clock and the RX circuit, the chip began to look for syncword in the received signal, and once found, it would pull the PKT FLAG and write the received data to FIFO.
Jiangsu JWT Electronics Shares CO.,Ltd. RX start Write Reg as R X on and select RX channel Wait 10us Set RX time out timer Enable interrupt FIFO_Flag interrupt PKT_flag interrupt Dissable FIFO_flag interrupt NO Dissable FIFO_flag interrupt More data to read in? Read one byte data YES NO Read more FIFO? Read FIFO YES Read FIFO Enable FIFO_flag interrupt RET1 RET1 Picture 13-12 4、 PA Output power setting . The output power of PA can be set by register reg0x02.
Jiangsu JWT Electronics Shares CO.,Ltd. The change of the power supply voltage will cause the output power to also change, so you need to pay attention to it in practical application.
Jiangsu JWT Electronics Shares CO.,Ltd. Picture 13-13 Forteen、FAQ 1、How to troubleshoot the SPI/I2C interface a、First check whether the power supply of the chip is normal, whether the VDD33 foot has voltage (3.3 V) input, and the RF VDD foot has 1.8V or so voltage output; b、Check the vibration of the chip. The default is IDLE state after the power is reset on the chip, and the crystal is switched on, and the power consumption is about 0.6 mA.
Jiangsu JWT Electronics Shares CO.,Ltd. 2、There are several main types of chips There are four main types of chips: 1、 IDLE state：When the chip is on (reset) the default is IDLE state, when the crystal is switched on, and the power consumption is about 0.
Jiangsu JWT Electronics Shares CO.,Ltd. write reg[0x02] = 0x4060; write reg[0x03] = 0x5810; write reg[0x05] = 0x7fa6; write reg[0x0A] = 0x2053; write reg[0x0D] = 0x6003; write reg[0x0F] = 0x661d; write reg[0x1A] = 0x00f7; write reg[0x01] = 0x207f; write reg[0x0B] = 0x857f; b、Clear to send FIFO write reg[0x26] = 0x8080 c、Write data to FIFO, such as the data sent： 0x05 0x01 0x02 0x03 0x04 0x05（The first byte represents length, the last five bytes are data, and the total length is 6 bytes.
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Jiangsu JWT Electronics Shares CO.,Ltd. synchronization code matching thus raising PKT flag. Therefore, the PKT flag pulls high but if the CRC is incorrect, it should be re-entered into the receiving process (clear FIFO, enabling it to receive... ). 5、 PKT_FALG How does the state change After the TX is started, the PKT FLAG will automatically pull down, the PKT FLAG will be raised after the data is sent, and then the PKT FLAG will remain high until the TX or RX is started again.
Jiangsu JWT Electronics Shares CO.,Ltd. 7、How to use auto-ack and resend Write register 0x01[3] = 1 to enable auto-ack function. Write register 0x0b [11:8], set the number of resend, the default value is 3 times.
Jiangsu JWT Electronics Shares CO.,Ltd. In case of low speed requirements, it is recommended to open the FEC function to improve performance. Turn on FEC13 or FEC23 by writing the register reg0x03[5:4]. FEC13 has better performance than FEC23, but the efficiency is also lower. It takes longer to send and receive the same data. 8、How does the state enter sleep, how to wake up, and how long does it take to wake up Keep the SPI CS high and write reg0x01[15] as "1" to enter the sleep state.
Jiangsu JWT Electronics Shares CO.,Ltd. Fifteen. Manufacturer related information Name：Jiangsu Jingweite Electronic Co. LTD Address: Building 12, Lianfa industrial park, No.199, Tongyuan Road, Industrial park, Suzhou , Jiangsu province Tel：0512-68566030 Web：http://www.js-jwt.com The 1Mbps Wireless N SDIO Module is designed to comply with the FCC statement. FCC ID is 2AZLU-JRF201203 .
2.2 List of applicable FCC rules FCC Part 15.247 2.6 RF exposure considerations This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. 2.
FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE 1: This product has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
