17/25

STLC2411

Table 11. WLAN HW signal assignment

8

INTERFACES

8.1 UART Interface

The chip contains two enhanced (128 byte transmit FIFO and 128 byte receive FIFO, sleep mode, 127 Rx

and 128 Tx interrupt thresholds) UARTs named UART1 and UART2 compatible with the standard M16550

UART.

For UART1, only Rx and Tx signals are available (used for debug purposes).

UART2 features:

– standard HCI UART transport layer:

– ST specific HCI command (check STLC2411 Software Interface document for more information)

– RXD, TXD, CTS, RTS on permanent external pins

– 128-byte FIFOs, for transmit and for receive

– Default configuration: 57.600 kbps

– Specific HCI command to change to the following baud rates:

Table 12. List of supported baud rates

8.2 Synchronous Serial Interface

The Synchronous Serial Interface (SSI) (or the Synchronous Peripheral Interface (SPI)) is a flexible mod-

ule supporting full-duplex and half-duplex synchronous communications with external devices in Master

and Slave mode. It enables a microcontroller unit to communicate with peripheral devices or allows inter-

processor communications in a multiple-master environment. This Interface is compatible with the Motor-

ola SPI standard, with the Texas Instruments Synchronous Serial frame format and with National Semi-

conductor Microwire standard.

Special extensions are implemented to support the Agilent SPI interface for optical mouse applications

and the 32 bit data SPI for stereo codec applications.

8.2.1 Feature description: Agilent mode

One application is a combination of a Bluetooth device with an AGILENT optical mouse sensor to build a

Bluetooth Mouse. The AGILENT chip has an SPI interface with one bi-directional data port.

When spi_io from ADNS_2030 is driving, spi_rxd should be active, while spi_txd is set as a tri-state high

WLAN

Scenario 1: PTA

Scenario 2:

WLAN master

Scenario 3: BT

master

Scenario 4: 2-wire

Scenario 5:

AWMA

WLAN 1

TX_ CONFIRM

BT_RF_NOT_

ALLOWED

Not used

BT_RF_NOT_

ALLOWED

MEDIUM_FREE

WLAN 2

TX_ REQUEST

Not used

WLAN_RF_ NOT_

ALLOWED

WLAN_RF_ NOT_

ALLOWED

Not used

WLAN 3

STATUS

Not used

Not used

Not used

Not used

WLAN 4

OPTIONAL_ SIGNAL

Not used

Not used

Not used

Not used

Baud rate

–

57.600 kbps (default)

4800

921.6k

38.4 k

2400

460.8 k

28.8 k

1800

230.4 k

19.2 k

1200

153.6 k

14.4 k

900

115.2 k

9600

600

76.8 k

7200

300