SWRS152N June 2013 – April 2021 WL1801MOD , WL1805MOD , WL1831MOD , WL1835MOD
PRODUCTION DATA
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The device includes a UART module dedicated to the Bluetooth shared-transport, host controller interface (HCI) transport layer. The HCI transports commands, events, and ACL between the Bluetooth device and its host using HCI data packets ack as a shared transport for all functional blocks except WLAN. Table 8-3 lists the transport mechanism for WLAN and bluetooth audio.
WLAN | SHARED HCI FOR ALL FUNCTIONAL BLOCKS EXCEPT WLAN | Bluetooth VOICE-AUDIO |
---|---|---|
WLAN HS SDIO | Over UART | Bluetooth PCM |
The HCI UART supports most baud rates (including all PC rates) for all fast-clock frequencies up to a maximum of 4 Mbps. After power up, the baud rate is set for 115.2 Kbps, regardless of the fast-clock frequency. The baud rate can then be changed using a VS command. The device responds with a Command Complete Event (still at 115.2 Kbps), after which the baud rate change occurs.
HCI hardware includes the following features:
Table 8-4 lists the UART default settings.
PARAMETER | VALUE |
---|---|
Bit rate | 115.2 Kbps |
Data length | 8 bits |
Stop bit | 1 |
Parity | None |