Quatech 802.11B/G manual Digital Uart Ports, Ethernet PHY Port, Uart Pin Definition

Airborne Enterprise Module Databook Quatech, Inc.

5.1Digital UART Ports

The units supports two digital UART ports, use of these ports is determined by the device type choice made in firmware. The details of the ports can be seen in Table 3.

The availability of UART2 for these device types is selected in firmware.

Table 3 - UART Pin Definition

Device Type UART Serial All

Pin Definition	UART1	UART2	UART1	UART2	Debug
	Pin	Pin	Pin	Pin
Data out (DOUT)	28	21	28	21	6

Data In (DIN)	24	9	24	9	8
Clear-to-Send (CTS)	12	19	12
Ready-to-Send (RTS)	18	17	18
Transmit Enable (/TXEN)			17
Receive Enable (/RXEN)			19
Serial Mode (SER_MOD)			22

The primary UART supports a 4-wire interface; the secondary port supports 4- wire interface except when being used with the Serial Device type, in which case it is reduced to a 2-wire only.

The primary digital UART can be used as the primary connection for the Serial device type. This type supports a 7-wire interface to allow the definition of the serial interface type (RS232/3422/485) and the data transfer direction. Definitions of this interface can be seen in Table 3.

The UART1 and UART2 interfaces support the following configurations:

BAUD: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, 921600

Flow Control: None, Hardware (CTS/RTS), Software (XON/XOFF)

Default settings: 9600, 8, N, 1, No Flow Control.

5.2Ethernet PHY Port

A 10/100 Ethernet PHY interface is supported when the Ethernet device type is selected in firmware. This interface is a 10/100Mbps interface that supports auto negotiation and cross-over cabling. The interface also supports both half and full duplex for 10Mbps and 100Mbps.

The interface uses a Broadcom BCM5241A Ethernet PHY, please refer to the manufacturers datasheet for interface details and appropriate design guidelines.

100-8080-110 8/11/2009 13