BL-M3881NT1 SPEC
BL-M3881NT1 SPEC Content 1. General Description ...................................................................................................................................3 2. Product Model Information ....................................................................................................................3 3. WIFI Specification .......................................................................................................................................3 3.1 WIFI features ......
BL-M3881NT1 SPEC 1. General Description The BL-M3881NT1 is a highly integrated WLAN module designed base on HiSilicon Hi3881. It support the IEEE 802.11b/g/n with 20MHz standard bandwidth and 5MHz/10MHz narrow bandwidth, provides the highest PHY rate up to 72.2Mbps@1T1R. This module integrates a high-performance 32-bit microprocessor and 2.4 GHz WLAN subsystem, support SDIO2.0 with clock frequency up to 50 MHz.
BL-M3881NT1 SPEC CH1: 2412MHz, CH2: 2417MHz, CH3: 2422MHz, CH4: 2427MHz, CH5: 2432MHz, CH6: 2437MHz, CH7: 2442MHz, CH8: 2447MHz, CH9: 2452MHz, CH10: 2457MHz, CH11:2462MHz respectively. 3.2 WIFI RF Performance Feature Description Standard IEEE 802.11 b/g/n 802.11 b: 11, 5.5, 2, 1 Mbps Data Rate 802.11 /g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps 802.11 n: MCS 0 to 7 for HT20MHz：65 Mbps IEEE 802.11b mode: CCK, DQPSK, DBPSK Modulation mode IEEE 802.11g mode: 64QAM, 16QAM, QPSK, BPSK IEEE 802.
BL-M3881NT1 SPEC 3.3 Block Diagram 3.
BL-M3881NT1 SPEC 3.5 PIN Assignment Pin # Name Type Description 1 GND P Ground 2 ANT RF RF I/O port for WLAN ANT 3 GND P Ground 4~5 NC / --No Connection,keep Floating 6 GPIO6 I HOST to wake-up Device, rising edge 7-8 NC / --No Connection,keep Floating 9 VDD P Main power voltage input 2.3V-3.
BL-M3881NT1 SPEC 18 SDIO_DATA_0 I/O SDIO data line 0 19 SDIO_DATA_1 I/O SDIO data line 1 20 GND P Ground 21 NC / --No Connection,keep Floating 22 VDIO P Supply voltage for IO 3.3V or 1.
BL-M3881NT1 SPEC 4. Antenna Specification 4.1 Antenna lists Max No. Type Band(s) 1 PCB antenna 2.4GHz - 2.5GHz 3.7 2 PCB antenna 2.4GHz - 2.5GHz 3.3 roborock S6 3 PCB antenna 2.4GHz - 2.5GHz 4.2 roborock S4 4 PCB antenna 2.4GHz - 2.5GHz 3.7 roborock S5 Max 5 PCB antenna 2.4GHz - 2.5GHz 3.
BL-M3881NT1 SPEC 4.2 Wireless LAN antenna matching circuit 4.3 Antenna design requirements a) RF-line need 50Ω single line impedance； b) Antenna is 2.
BL-M3881NT1 SPEC d) PCB thickness is 1.5mm，Copper-Layer 6，Antenna is Layer1； e) Antenna put on the edge of the pcb，Clearance around and below； 5. FCC and IC Warning This device complies with Part 15 of the FCC Rules / Industry Canada licence-exempt RSS standard(s). 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.
BL-M3881NT1 SPEC interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver.
