I9600 Datasheet, PDF (5/7 Pages) Radiometrix Ltd – 9600 baud Transparent Data Link IC

Application circuits
Interfacing a i9600 to a Transceiver
NC
TXE
JP1
Test
RXE
20.48MHz ^15pF
SETUP OSC1
NC
VSS
OSC2
VDD
100Ω
15pF
NC
TXD
4k7
RSTXD
RSRXD
NC
NC ^100nF
BUSY
RXD
5V
supply
Vcc
RF
TX SELECT
RX SELECT
TXD Transceiver
RXD
GND
Figure 5: i9600 interfaced to a Transceiver (e.g. BiM3A)
Interfacing a i9600 to an RS232 port
+5V
DCD
DSR
1
RXD
TXD
CTS
5V
9
5
RS232 driver
e.g: MAX232
TXD
GND
NC
TXE
JP1
Test
RXE
SETUP OSC1
20.48MHz ^15pF
NC
VSS
OSC2
VDD
100Ω
15pF
NC
TXD
4k7
RSTXD
RSRXD
NC
NC ^100nF
BUSY
RXD
5V
supply
Vcc
RF
TX SELECT
RX SELECT
TXD Transceiver
RXD
GND
Figure 6: i9600 + transceiver interfaced to an RS232 port via an RS232 line driver/receiver
BUSY pin in this can be connected to CTS, DSR and DCD pin to simulate a flow control signal.
i9600 is capable of continuously streaming data at 9600bps. Therefore, BUSY pin is not asserted to stop
the Host from sending data as in normal RTS/CTS flow control method, but merely to warn the host
that there is already data in the receive buffer which need to be downloaded before sending any more
data.
Some DTE hosts assert DTR signal when they are active and this can be used via RS232 line receiver to
enable i9600. Otherwise the ENABLE must be physically pulled-low to activate the i9600.
Radiometrix Ltd
i9600 Data Sheet
page 5