9600 baud Transparent data handler device

9600 baud Transparent data handler device
	i9600

The I9600 is a 9600baud half-duplex serial modem controller suitable for use with wideband receivers, transmitters and transceivers. It takes care of preamble, synchronisation, bit balancing and error checking and enables a transparent radio data link to be established between radio devices.	Figure 1: i9600-000-DIL


The I9600 provides a half duplex link. Provided no two devices attempt to transmit simultaneously no further restrictions on data transmission need be made, as all transmit timing, valid data identification and datastream buffering is conducted by the unit. Synchronisation and framing words in the packet prevent the receiver outputting garbage in the absence of wanted RF signal or presence of interference. For multiple radio systems (polled networks) a I9600 can be set to 1 of 8 unique addresses. This unit supports 9600 baud asynchronous data: 1 start bit, 8 data bits, 1 stop bit To connect to a true RS232 device, inverting level shifters must be used (MAX232 type are ideal, but simple NPN transistor switches often suffice). With typical microcontrollers and UARTs, direct connection is usable. Note that TXD has no internal pullup.

Features Operating voltage (temperature): 5V for standard version (-40°C to +85°C) Maximum usage of the range capability of an RF module Adequate preamble to settle data slicer in the receiver Extra wake up preamble to allow for transmitter power up time requirements Differential Manchester encoding of address, data and checksum Synchronisation codes and checksum to reduce false triggering on noise Suitable to be used with Wide Band FM radio modules Serial modem baud rate at 9600bps (half-duplex) Addressable point-to-point
Applications PDAs, organisers & laptops Handheld / portable terminals EPOS equipment, barcode scanners In-building environmental monitoring and control Remote data acquisition system, data logging Fleet management, vehicle data acquisition