User's Manual

TiWi5TRANSCEIVERMODULE
DATASHEET
The information in this document is subject to change without notice.
330‐0042‐R2.3  Copyright©2011‐2016 Page24of46
ENABLESCHEME
Themodulehas3enablepins,oneforeachcore:WL_EN,andBT_ENandFM_EN.Presently,thereare2modesofactive
operationnowsupported:WLANandBluetooth.ItisrecommendedthattheFM_ENpinbegroundedtodisabletheFM
section.ItisalsorecommendedthattheFMsectionbedisabledbyBluetoothHCIcommands.
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1. EachcoreisoperatedindependentlybyassertingeachENsignaltoLogic'1'.Inthismodeitispossibletocontroleach
coreasynchronouslyandindependently.
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2. Bluetoothmodeoperation.WLANwillbeoperatedthroughWL_ENasynchronouslyandindependentlyofBluetooth.
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IRQOPERATION
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1. ThedefaultstateoftheWLAN_IRQpriortofirmwareinitializationis0.
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2. Duringfirmwareinitialization,theWLAN_IRQisconfiguredbytheSDIOmodule;aWLAN_IRQchangesitsstateto
1.
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3. AWLANfirmwareinterruptishandledasfollows:
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a. TheWLANfirmwarecreatesanInterrupt‐to‐Host,indicatedbya1‐to‐0transitiononthe
WLAN_IRQline(hostmustbeconfiguredasactive‐loworfalling‐edgedetect).
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b. Afterthehostisavailable,dependingontheinterruptpriorityandotherhosttasks,itmasksthefirmware
interrupt.TheWLAN_IRQlinereturnsto1(0‐to‐1transitionontheWLAN_IRQline).
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c. Thehostreadstheinternalregisterstatustodeterminetheinterruptsources‐theregisterisclearedafter
theread.
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d. Thehostprocessesinsequencealltheinterruptsreadfromthisregister
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e. Thehostunmasksthefirmwareinterrupts.
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4. ThehostisreadytoreceiveanotherinterruptfromtheWLANdevice. 