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XR-50B WIFI module

XR-50B User manual

Version V1

Summary of content (18 pages)

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XR-50B WIFI module This device is intended only for OEM integrators under the following conditions: 1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) This device and its antenna(s) must not be co‐located with any other transmitters except in accordance with FCC multi‐transmitter product procedures. Referring to the multi‐transmitter policy, multiple‐transmitter(s) and module(s) can be operated simultaneously without C2P.
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XR-50B WIFI module 1、Product Overview The XR-50B WiFi module was developed to meet the IOT application of speech recognition, consisting of the core processor XR872, AC107 audio CODEC , power supply and auxiliary circuit. The XR872 integrates ARM-M4F MCU and high-capacity SRAM in a smaller package with operating frequency up to 384MHz.
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XR-50B WIFI module 1.2 Characteristic ◼ IEEE 802.11b/g/n, 1x1 SISO 2.4GHz ◼ Built-in ARM Cortex-M4F 32bit MCU with main frequency up to 384MHz, support RTOS ◼ Built-in 416KB SRAM , 160KB ROM and 4M PSRAM ◼ Support external Flash and eXecute In Place(XIP) ◼ 8 shared universal DMA channels ◼ Built-in 8-way 12bit resolution SAR type AD converter ◼ Integrated WiFi MAC/ BB/RF/PA/LNA ◼ Support WEP, WPA/WPA2, WPS2.
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XR-50B WIFI module ◼ On-board DC/DC power supply module for lower power consumption 1.3 Key parameter Table1.1 Description Model XR-50B Package SMD40 Size 29*19*3(±0.2)mm Certification FCC、CE、IC、REACH、RoHS SPI Flash 32Mbit（default） Interface UART/GPIO/ADC/PWM/I2S/SPI/SDIO/DVP/PDM IO 26 UART baud 9600/19200/38400/115200/921600 bps Freq. range 2400~2483.5MHz Antenna Type Onboard/IPEX 802.11b: 17±2 dBm (@11Mbps) TX power 802.11g: 15±2 dBm (@54Mbps) 802.
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XR-50B WIFI module CCK, 1 Mbps : -96dBm CCK, 11 Mbps: -91dBm RX sensitivity 6 Mbps (1/2 BPSK): -91dBm 54 Mbps (3/4 64-QAM): -75dBm HT20, MCS7 (65 Mbps, 72.2 Mbps): -72dBm RX Active(MCU active, DC-DC mode):44mA TX Active(MCU active, DC-DC mode): Power 196mA@11n MCS7 15dBm dissipation 227mA@11b CCK 17dBm (Typical) Standby: ~43uA Hibernation: ~5uA Shutdown: ~0.5uA Security Power supply Operating temp. Storage condition Copyright © 2019 WEP/WPA-PSK/WPA2-PSK/WPS2.0 2.7V ~ 5.
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XR-50B WIFI module 2、Pin definition XR-50B has 40 pins，definitions are shown in Figure 2.1 and Table 2.2. Figure 2.1 XR-50B Pin diagram Table 2.
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XR-50B WIFI module 7 PA3 SPI1_CS0； SD_DATA1； CSI_D3; UART0_RX；EINTA3 PA18; TWI0_SDA; IR_TX; FEM_CTRL2; IR_RX; EINTA18 8 GND Ground 9 PB3 SWD_TCK; JTAG_TDI; PWM7/ECT7 ;FLASH_HOLD/IO ； EINTB3 10 PB2 SWD_TMS; JTAG_TD0 ;PWM6/ECT6; FLASH_WP/IO2 ； EINTB2 11 PB16 SD_CMD;EINTB16 12 PB17 SD_DATA0;EINTB17 13 PB18 SD_CLK;EINTB18 14 GND Ground 15 LOUTP Audio DAC output p 16 AGND Analog ground 17 MBIAS1 MIC1 Bias voltage output 18 MIC1- MIC1- 19 MIC1+ MIC1+ 20 MBIAS2 MIC2 Bias v
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XR-50B WIFI module 24 MIC2+ MIC2+ 25 MIC2- MIC2- 26 PA7 UART1_TX;SPI1_CS2;TWI0_SDA;CSI_D7;WUPIO3;EINTA7 27 GND Ground 28 PA6 UART1_RX;SPI1_CS1;TWI0_SCL;CSI_D6;WUPIO2;EINTA6 29 PA5 UART1_CTS;SD_DATA3;TWI0_SDA;CSI_D5;WUPIO1;EINTA5 30 PA4 UART1_RTS;SD_DATA2;TWI0_SCL;CSI_D4;WUPIO0;EINTA7 31 PA11 ADC_CH1;PWM3/ECT3;DMIC_DATA;CSI_VSYNC;EINTA11 32 PA10 ADC_CH0;PWM2/ECT2;DMIC_CLK;CSI_HSYNC;EINTA10 33 PA9 FEM_CTRL2;PWM1/ECT1;TWI1_SDA;CSI_MCLK;EINTA9 34 PA8 FEM_CTRL1;PWM0/ECT0;TWI1_SCL
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XR-50B WIFI module Table 2.3 Boot mode mode RST PB2 PB3 download Rising edge Low Low Low High High Low High High operating Rising edge Notice：PB2 and PB3 has been pulled up in module, module has self-reset function 3. Electrical parameters 3.1 Characteristic Item Conditon Min. Typ. Max Unit Storage temp. - -65 Noraml 150 ℃ Operating - -40 20 85 ℃ IPC/JEDEC J-STD-020 - - 260 ℃ VCC 2.7 3.3/5 5.5 V VIL VDD_IO=3.3V -0.3 - 1.32 V VIH VDD_IO=3.3V 2.06 - 3.
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XR-50B WIFI module VOL VOH VDD_IO=3.3V,|IOL|=7.5 -0.3 - 0.4 V 2.9 - 3.6 V ~50 mA VDD_IO=3.3V,|IOL|=7.5 ~50 mA 3.2WiFiRF Characteristic VCC=3.3V, VDD_ANA =1.8V, XTAL=40MHz,温度=25℃ Item Min. Typ. Max. Unit Frequency 2400 - 2483.5 MHz Reflection value - - -10 dB Transmit Power CCK, 1 Mbps 17.05 17.34 CCK, 11.0 Mbps 16.62 17.07 - 6 Mbps OFDM 16.03 16.55 - 54Mbps OFDM 15.67 16.34 - dBm HT20, MCS0 14.34 15.88 - dBm HT20, MCS7 14.58 15.
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XR-50B WIFI module EVM CCK, 1 Mbps -19.78 -19.91 - dB CCK, 11.0 Mbps -18.71 -19.12 - dB 6 Mbps OFDM -21.23 -21.77 - dB 54Mbps OFDM -21.35 -22.41 - dB HT20, MCS0 -28.17 -28.48 - dB HT20, MCS7 -28.86 -30.22 - dB Receiver sensitivity CCK, 1 Mbps - -96 - dBm CCK, 11 Mbps - -91 - dBm 6 Mbps - -91 - dBm 54 Mbps - -75 - dBm HT20, MCS0 - -91 - dBm HT20, MCS7 - -72 - dBm Copyright © 2019 ShenzhenJiXinInteligence Co.
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XR-50B WIFI module 3.3 Audio codec VCC=3.3V, VDD_ANA=1.8V,temperature=25℃ ,ADC performance Item Conditon Full-Scale Input Level PGAGain=0dB@THD<-40dB SNR (A-weighted) THD+N (-3dBFS 1KHz PGA Gain=0dB Performance Min. Typ. Max. Unit - 1.75 - Vrms - 100 - dB - dB - -90 input) SNR (A-weighted) THD+N (-3dBFS 1KHz PGA Gain=24dB - 94 - dB - -91 - dB - 84 - dB - -81 - dB input) SNR (A-weighted) THD+N (-3dBFS 1KHz PGA Gain=36dB input) VCC=3.3V, VDD_ANA=1.
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XR-50B WIFI module THD+N (-3dBFS - -89 - dB - 91 - dB - -69 - dB 1KHz input) SNR (A-weighted) PGA Gain=24dB THD+N (-3dBFS 1KHz input) VCC=3.3V, VDD_ANA=1.8V, temperature=25℃ ,DAC performance Item Condition Performance Full-Scale Output Min. Typ. Max. Unit - 0.856 - Vrms - 99 - dB - -87 - dB Level RLoad=100K SNR (A-weighted) THD+N (-3dBFS 1KHz input) 3.4 Power dissipation XR872, 25℃, VCC=3.3V,VDD_ANA=1.
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XR-50B WIFI module 54M 16dBm OFDM HT20,M 16dBm CS0 HT20,M 15dBm CS7 1M DSSS 11M CCK 54M OFDM HT20,MCS0 HT20,MCS7 1M 17dBm DSSS,nu ll frame - 218.0 - mA - 201.3 - mA - 196.0 - mA - 40.0 42.0 48.5 48.3 48.0 217.0 - mA mA mA mA mA mA RX RX listen 1M DSSS DTIM1 - - mA mA uA OFF OFF OFF - DTIM3 DTIM8 DTIM10 - - 40.0 32.5 1031. 0 428.0 186.0 154.0 43.0 5.0 - uA uA uA uA uA OFF OFF - - - 0.
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XR-50B WIFI module 6. Contact Us Address：A505 Room,Business Building,Suojia Science Park,Xixiang,Baoan District,Shenzhen Telephone：0755-23220940 Website：www.aimachip.com Copyright © 2019 ShenzhenJiXinInteligence Co.