OMAP35x & AM/DM37x Wireless Connectivity Platform

General Platform Description

The development platform is primarily based on the OMAP35x or AM/DM37x EVM kit by Mistral. An extension card provided by Mistral serves as a wireless connectivity add-on.

Key Properties

• Platform combines a AM/DM37x EVM and a WL1271 connectivity solution
• AM37x is key catalog applications processor platforms, supported worldwide by TI Sales
• Wireless Connectivity Card which incorporates an open source 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 (Connectivity Expansion Card). This board connects to the EVM main board. This board uses one of the two expansion connectors (more specifically the P7 connector) to connect to the main board.

Because this board draws power from the Main EVM board via two sources; 1.8V VIO supply and Vbat (battery supply), no additional power source is needed to power this board. 

 

Figure: Block diagram showing the interconnection between WLAN connectivity board and the OMAP 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 OMAP35x EVM

Signal type	Signal Name	Connection to OMAP (Application) Board	Mistral OMAP35x Connection
Clocks	SLOWCLK	Connects to a 32 KHz clock. This could come from the power module on board.	32KHz_Exp
Power	VBAT	Connects to a (5 - 3.0V) supply (mostly battery).	VBAT_Exp
Power	VDDS/VIO	Connects to a 1.8V supply. (This is the same as VIO.)	VIO_1v8
Bluetooth - Host I/F	BT_EN	GPIO on OMAP	T2_LEDSYNC/T2_GPIO13
Bluetooth - Host I/F	HCI_TX	UART lines on the OMAP	UART2_TX
Bluetooth - Host I/F	HCI_RX	UART lines on the OMAP	UART2_RX
Bluetooth - Host I/F	HCI_CTS	OMAP UART CTS line	UART2_CTS
Bluetooth - Host I/F	HCI_RTS	OMAP UART RTS line	UART2_RTS
Bluetooth - Host I/F	BT_UART_WAKE/NC	Optional signal	No Connect
Bluetooth - Host I/F	BT_WAKE_UP	Optional signal that can be connected to an OMAP GPIO	MMC2_DAT5
Bluetooth Audio	PCM_CLK	Multi-channel buffered serial port (McBSP) on the OMAP	MCBSP1_CLKX
Bluetooth Audio	PCM_ FSYNC	McBSP on the OMAP	MCBSP1_FSX
Bluetooth Audio	PCM_ DOUT	McBSP on the OMAP	MCBSP1_DR
Bluetooth Audio	PCM_DIN	McBSP on the OMAP	MCBSP1_DX
Bluetooth Debug	BT_TX_ DBG	PC UART on the board	To USB
FM - Digital Audio	I2S_CLK /NC	Optional connection to CODEC interface	McBSP3_CLKX
FM - Digital Audio	I2S_FYSNC / NC	Optional connection to CODEC interface	McBSP3_FSX
FM - Digital Audio	I2S_DOUT / NC	Optional connection to CODEC interface	McBSP3_DX
FM - Digital Audio	I2S_DIN / NC	Optional connection to CODEC interface	McBSP3_DR
FM Analog Audio	NC/FM_AUDIO_NL_OUT	No Connection	No Connection
FM Analog Audio	FM_AUDL_IN	To a microphone/line connector on the board	Test point
FM Analog Audio	FM_AUDIO_PL_OUT	To a headset connector on the board	Test point
FM Analog Audio	FM_AUDR_IN	To a microphone/line connector on the board	Test point
FM Analog Audio	FM_AUDIO_PR_OUT	To a headset connector on the board.	Test point
FM Analog Audio	NC/FM_AUDIO_NR_OUT	No connection	No Connect
FM Antenna	FM_RX_ ANT	To an FM antenna on the board	RF connector
FM Antenna	FM_TX_ ANT	To an FM antenna on the board	RF connector
WLAN Host I/F	WLAN_EN/GPS_EN	OMAP GPIO.	UART1_CTS/GPIO150
WLAN Host I/F	SPI_DIN/SDIO_CMD	OMAP MMC/SDIO_CMD	MMC2_CMD
WLAN Host I/F	SPI_DOUT/SDIO_D0	OMAP MMC/SDIO_D0	MMC2_DAT0
WLAN Host I/F	SDIO/SPI_CLK	OMAP MMC/SDIO_CLK	MMC2_CLK
WLAN Host I/F	SPI_CS/SDIO_D3	OMAP MMC/SDIO_D3	MMC2_DAT3
WLAN Host I/F	SDIO_D1	OMAP MMC/SDIO_D1	MMC2_DAT1
WLAN Host I/F	SDIO_D2	OMAP MMC/SDIO_D2	MMC2_DAT2
WLAN Host I/F	WLAN_IRQ	Connects to a GPIO for the WLAN IRQ.	UART1_RTS/GPIO149
WLAN Debug	WL_RS232_TX/GPS_TX	PC UART connection on the board.	To USB
WLAN Debug	WL_RS232_RX/GPS_RX	PC UART connection on the board.	To USB
WLAN Debug	WL_UART_DBG	Connects to a PC-UART line with a jumper configuration.	To USB

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Getting Started Guide

Follow this link to access the Getting Started Guide that describes the HW setting, WLAN and BT drivers 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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