Users Manual
XR‐50A
1.Preambles
TheXR‐50AWiFimodulewasdevelopedforimageacquisition,voiceplaybackand
recognition, and wireless transmission applications. It integrates high performance
WLAN subsystem with WiFi MAC/BB/RF/PA/LNA unit; Integrates high sample rate
and very low noise Audio subsystem; integrates high ‐resolution image acquisition
subsystem, support hardware JPEG image encoding; integrated advantage
power
management unit, support ultra‐low power consumption, has a variety of sleep
modes and fast wake‐up mechanism; Integrates hardware encryption engine to
supportAES/DES/3DES/SHA/MD5/CRCetc.;Integratesrichperipheralinterfaces,such
asI2S,SDIO, CSI,UART.
XR‐50A WiFi module supports standard IEEE802.11 b/g/n protocol, supports
RT OS, with a
complete TCP /IP protocol stack. Users can use the module to add
networkingcapabilitiesto existing devices,orcanuseitasamasterdesignwireless
network product, XR808 can be started directly from external flash memory, the
on‐chip high‐speed buffer memory helps improve system performance and reduce
RAMrequirements.
Thecoreprocessorfunctionalblockdiagramisshownbelow,