AM18x + WL1271

Important Note:

The design and software discussed on this site is available for download, but is no longer being actively developed and maintained. This wiki is in maintenance mode and the software is supported on Sitara E2E forum

General Platform Description

The development platform is primarily based on the AM1808 kit by Mistral. An extension card provided by Mistral serves as a wireless connectivity add-on.

Key Properties

• Platform combines a AM1808 and a WL1271 connectivity solution
• AM1808 are key catalog applications processor platforms, supported worldwide by TI Sales
• Wireless Connectivity Card which incorporates a WiLink 6 based module
• Supported Technologies: WLAN and Bluetooth support
• Supported OS: Linux

                                                                                               

General HW Description and Block Diagram

The WL1271 connectivity solution is available in the form of a daughter board.This board connects to the AM1808 board. This board will be interfaced to the EVM through the Expansion connectors J29 and J30. Generally the daughter board is plugged to the connector J29 of the AM1808 EVM and the BT signals are connected using the FRC cable. The daughter board uses 5V power available on the EVM to generate the required VBAT (3.6V) and VIO (1.8V) for the WL1271 module. 

 

Figure: Block diagram showing the interconnection between WLAN connectivity board and the AM1808 EVM board.

 

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Connectivity Expansion Card Description

This daughter board contains an LSR module which is based on a WL1271 Wireless LAN and a Bluetooth combo chip.

The wireless LAN and Bluetooth  share one antenna which is mounted directly on the connectivity board.

1271 Connectivity Expansion Card Pin Assignment

The following table shows the pin assignment from the connectivity expansion card to the Main EVM:

WL1271 Signal Connection to AM1808 EVM

Signal type	Signal Name on the WL1271 module	Connection to AM1808 EVM Board	Mistral AM1808 Connection
Bluetooth - Host I/F	BT_FUNCT5	Optional signal.	No Connect
Bluetooth - Host I/F	BT_EN	GPIO on AM1808.	ACLKR / GP0[15]
Bluetooth - Host I/F;	HCI_TX	UART lines on the AM1808.	UART1_RXD
Bluetooth - Host I/F	HCI_RX	UART lines on the AM1808	UART1_TXD
Bluetooth - Host I/F	HCI_CTS	UART lines on the AM1808	UART1_RTS
Bluetooth - Host I/F	HCI_RTS	UART lines on the AM1808	UART1_CTS
Bluetooth - Host I/F	BT_FUNCT2	Optional signal that can be connected to an AM1808 GPIO	AXR8 /CLKS1 /ECAP1_APWM1 /GP0[0]
Bluetooth - Host I/F	AUD_IN	McBSP on the AM1808	DX1
Bluetooth - Host I/F	AUD_OUT	McBSP on the AM1808	DR1
Bluetooth - Host I/F	AUD_CLK	McBSP on the AM1808	CLKR1
Bluetooth - Host I/F	AUD_FSYNC	McBSP on the AM1808	FSR1
Bluetooth - Host I/F	BT_FUNCT4	Optional signal	No Connect
WLAN Host I/F	WL_EN	AM1808 GPIO	UHPI_HHWIL /UPP_CH1_ENABLE /GP6[9]
WLAN Host I/F	SDIO_CMD	AM1808 MMC/SDIO_CMD	MMCSD1_CMD
WLAN Host I/F	SDIO_D0	AM1808 MMC/SDIO_D0	MMCSD1_DAT[0]
WLAN Host I/F	SDIO_CLK	AM1808MMC/SDIO_CLK	MMCSD1_CLK
WLAN Host I/F	SDIO_D3	AM1808 MMC/SDIO_D3	MMCSD1_DAT[3]
WLAN Host I/F	SDIO_D1	AM1808 MMC/SDIO_D1	MMCSD1_DAT[1]
WLAN Host I/F	SDIO_D2	AM1808 MMC/SDIO_D2	MMCSD1_D[2]
WLAN Host I/F	WLAN_IRQ	AM1808 GPIO	UHPI_HCNTL1 /UPP_CH1_START /GP6[10]
WLAN Host I/F	WL_UART_DBG	Optional signal	No Connect
WLAN Host I/F	WL_RS232_RX	Optional signal	No Connect
WLAN Host I/F	WL_RS232_TX	Optional signal	No Connect

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Getting Started Guide

Follow this link to access the Getting Started Guide that describes the HW setting, WLAN and BT driver installation and basic connection to the WLAN AP:
Getting Started Guide

Links

Follow this link for the LSR Module Product web page LSR Module product page
Follow this link for the WL1271 module datasheet
Follow this link for the Mistral WL271 daughtercard web page Mistral WL271 daughtercard product page

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