Respironics 1127941BT Wi-Fi and Bluetooth Module User Manual 2ANZ 1127941BT

Respironics, Inc. Wi-Fi and Bluetooth Module 2ANZ 1127941BT

Radio Integration Manual

2ANZ-1127941BT | Module Integration Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 Module Integration This document describes how to integrate the TI WL1831MOD radio module into a final product with a chip Antenna in a SISO system. The WL1831MOD is a surface mount Bluetooth and Wi-Fi combo radio module in the WL18XX family from Texas Instruments. The module data sheet can be found at the manufacturer’s web site below: http://www.ti.com/wireless-connectivity/simplelink-solutions/wi-fi/products.html The module is shown below, along with the transmission line connecting it to the matching network and chip antenna. The module connects back to the host through multiple interfaces. All of these interfaces operate at a nominal supply voltage of 1.8V. The pin assignments of these signals are showing in Table 1 and Figure 1. DC Input Power: The radio module power is regulated internally by the module. Power is applied to the VBAT_IN terminals with a voltage in the range of 2.9-4.8V. The I/O voltage of the module is set by applying 1.8V to the VIO_IN Terminal. Slow Clock: The radio requires a 32.768 kHz square wave input at the EXT_32K input terminal of the module. Bluetooth UART: The Bluetooth subsystem is controlled via an HCI 4-wire UART interface operating at 1.8V.
2ANZ-1127941BT | Module Integration Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 Bluetooth PCM: The Bluetooth PCM can be used for BT Audio and can operate in either a master or slave configuration. If they are not used they should be not connected. (NC) WLAN Host Interface The WLAN interfaces uses a 4-bit SDIO Interface back to the host operating at 1.8V. The host must provide PU using a 10-K resistor for all non-CLK SDIO signals. In order to follow the wakeup/shutdown requirements, the WL_EN (pin number 40) should be connected to host GPIO. Must be pulled high for WLAN operation. This GPIO should have internal pull-up allowing the WL18xx pin to remain high on host suspend. In order to enable WOW feature, a pull up on the line is required during HOST shutdown. IRQ_WL should be connected to host GPIO. This GPIO should be able to wake the host from suspend, therefore it's better to always connect the pin (number 14) to the always on domain of the Host. The IRQ_WL pin serves as interrupt generation from WL18xx to the host. Table 1: Device Pinout Pin # Signal Function Pin # Signal Function 1 GND 33 GND 2 NC Reserved for future use, NC 34 GND 3 NC Reserved for future use, NC 35 GND 4 NC Reserved for future use, NC 36 EXT_32K Input clock of 32.768 kHz 5 NC Reserved for future use, NC 37 GND 6 WL_SDIO_CMD_1V8 WLAN SDIO Command 38 VIO_IN Sets I/O voltage. 7 GND 39 GND 8 WL_SDIO_CLK WLAN CDIO CLK, must be driven by host 40 WLAN_EN Hi = Enable 9 GND 41 BT_EN Hi = Enable 10 WL_SDIO_CMD_1V8 WLAN SDIO data bit 0 42 WL_UART_DBG Used for Debug 11 WL_SDIO_D1_1V8 WLAN SDIO data bit 1 43 BT_UART_DBG Used for Debug 12 WL_SDIO_D2_1V8 WLAN SDIO data bit 2 44 GND 13 WL_SDIO_D3_1V8 WLAN SDIO data bit 3 45 GND 14 WL_IRQ_1V8 WLAN SDIO IRQ 46 VBAT_IN Power Supply Input: 2.9-4.8V 15 GND 47 VBAT_IN Power Supply Input: 2.9-4.8V 16 GND 48 GND 17 GND 49 GND 18 RF_ANT2 NC if not used 50 BT_HCI_RTS_1V8 UART RTS to Host 19 GND 51 BT_HCI_CTS_1V8 UART CTS to Host 20 GND 52 BT_HCI_TX_1V8 UART TX to Host
2ANZ-1127941BT | Module Integration Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 21 NC Reserved for future use, NC 53 BT_HCI_RX_1V8 UART RX to Host 22 NC Reserved for future use, NC 54 GND 23 GND 55 GND 24 GND 56 BT_AUD_IN BT Audio, NC if not used 25 NC Reserved for future use, NC 57 BT_AUD_OUT BT Audio, NC if not used 26 GPIO2 Used for Debug 58 BT_AUD_FSYNC BT Audio, NC if not used 27 GPIO1 Used for Debug 59 GND 28 GND 60 BT_AUD_CLK BT Audio, NC if not used 29 GND 61 GND 30 GND 62 NC Reserved for future use, NC 31 GND 63 GND 32 RF_ANT1 RF Antenna Connection 64 GND
2ANZ-1127941BT | Module Integration Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 Figure 1: Device Pinout. Figure 2: Host Connections
2ANZ-1127941BT | Module Integration Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 Antenna Connection: The antenna is connected to terminal RF_ANT1 on the radio module. The connection between the antenna and RF_ANT1 should be made with a 50 ohm transmission line. A matching network will be needed to match the antenna and should be placed right before the antenna input. Avoid routing any analog or digital signals on the signal layer directly underneath any of the radio, matching network or antenna. All of the ground pins on the module must be connected to the main PCB. This device is intended only for OEM integrators under the following conditions: • The antenna must be installed so that 20 cm is maintained between the antenna and users. • The transmitter module cannot be co-located with any other transmitter or antenna. • The radio transmitter can operate only using a chip antenna with a maximum gain of 2.2dBi. Labeling If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: 2AN9Z-1127941BT” or “Contains 2AN9Z-1127941BT.” Any similar wording that expresses the same meaning may be used.
2ANZ-1127941BT | Regulatory Compliance Respironics Inc. (Philips Respironics) 1001 Murry Ridge Lane Murrysville PA 15668 Regulatory Compliance 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. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful 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, TV reception, or other devices which can be determined by turning the equipment on and off, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna (on the radio, TV, or other device). Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer of the device for help. Any changes or modifications made to the device that are not expressly approved by Respironics may void the user’s authority to operate the equipment. This device is intended only for OEM integrators under the following conditions: • The antenna must be installed so that 20 cm is maintained between the antenna and users. • The transmitter module cannot be co-located with any other transmitter or antenna. • The radio transmitter can operate only using a chip antenna with a maximum gain of 2.2dBi.

Navigation menu