User's Manual
Table Of Contents
- Scope
- MSD50NBT Features Summary
- Specifications
- WLAN Functional Description
- Bluetooth Functional Description
- Electrical Characteristics
- Bluetooth Radio Characteristics
- SDIO Timing Requirements
- Pin Definitions
- Mechanical Specifications
- Mounting
- Reference Schematic of MSD50NBT
- RF Layout Design Guidelines/Precautions
- Regulatory
- FCC and Industry Canada Regulatory
- European Union Regulatory
- EU Declarations of Conformity
- Ordering Information
MSD50NBT
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
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Feature
Description
MAC/BB/RF Block
The MSD50NBT Wireless MAC consists of five major blocks:
Host interface unit (HIU) for bridging to the AHB for bulk data accesses and APB for
register accesses
Ten queue control units (QCU) for transferring TX data
Ten DCF control units (DCU) for managing channel access
Protocol control unit (PCU) for interfacing to baseband
DMA receive unit (DRU) for transferring RX data
Baseband Block
The MSD50NBT baseband module (BB) is the physical layer controller for the 802.11b/g/n
air interface. It is responsible for modulating data packets in the transmit direction and
detecting and demodulating data packets in the receive direction. It has a direct control
interface to the radio to enable hardware to adjust analog gains and modes dynamically.
Clock Sharing
Clock sharing is implemented on the MSD50NBT. The Bluetooth chip (CSR8811) receives a
reference clock from Wi-Fi chip (QCA6004). When Wi-Fi is in power off/reset state, no
26MHz reference clock is available; therefore, bluetooth is also off.