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OMAP35x & AM/DM37x Wireless Connectivity Platform

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General Platform Description[edit]

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[edit]

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. 

WLAN to OMAP3530 Block diagram.png 

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

 


 

Connectivity Expansion Card Description[edit]

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[edit]

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

Getting Started Guide[edit]

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

See Also[edit]



Links[edit]

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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