I9600 RADIOMETRIX [Radiometrix Ltd], I9600 Datasheet - Page 2

• Manufacturer Part Number: I9600
• Description: 9600 baud Transparent Data Link IC
• Manufacturer: RADIOMETRIX [Radiometrix Ltd]

User Interface
User Interface
Pin description:
Notes:
1. No connections at all may be made to 'nc' pins
2. TXD, RXD, RSRXD, RSTXD and BUSY are 5V CMOS logic level
3. Some Radiometrix transmitters require 3V logic levels on their transit data inputs:
4. In RX operation, Dout becomes a high impedance
5. After pulling TXE low (active), the coder allows about 3mS for TX to power up and settle
6. RSTXD (7) has no pullup. If the device is only used for receive, then tie this pin to VCC
7. Vcc must be a 5v regulated supply (4.75 - 5.25V). At this oscillator speed the PIC will not operate
8. A 16kbit/sec modified biphase comms protocol is used
9. Pin 3 has no pullup. It is used to enter 'setup' mode (see below)
11. Without external loads the chip draws less than 5mA from 5v
12. BUSY goes high when valid data is present in the receive buffer.
13. A simple addressing structure is included in the datastream.
14. OSC1, 2 require a 20.48MHz fundamental mode crystal, a series 100Ω resistor from OSC2,
Radiometrix Ltd
User Interface
User Interface
Pin
1
2
3
4
5
6
7
8
9
10
11 - 12
13
14
15
16
17
18
reliably at 3V
Units may be programmed onto one of eight addresses (all units are supplied set to default addr=0)
a divider (4.7kΩ series, 10kΩ to ground) on the TXD pin is needed
and a pair of 15pF caps : from the crystal pins to 0V
Name
NC
Test
SETUP
NC
0V
NC
RSTXD
RSRXD
BUSY
RXD
NC
TXD
Vcc
OSC2
OSC1
RXE
TXE
Figure 2: package type, 18-Lead Plastic Dual In-line (PDIP - 300mil wide body)
Vss (0V)
RS TXD
RS RXD
SETUP
BUSY
TEST
I/O
-
in
in
-
-
-
in
out
out
in
-
out
-
out
in
out
out
NC
NC
NC
Function
No Connection
A 10kΩ pullup to VCC must be provided
low = enter setup mode (address programming): high = normal
operation
No Connection
Supply ground
No Connection
Inverted RS232 datastream in, 9600 baud
Inverted RS232 datastream out, 9600 baud
High indicates data received or in rx FIFO buffer
Baseband input from receiver data output
No Connection
Baseband output to transmitter data input
5V (regulated power supply); Decouple with 0.01uF close to IC
connect to 20.48MHz crystal via 100Ω resistor
connect to 20.48MHz crystal
Active low enable receiver
Active low enable transmitter
1
2
3
4
5
6
7
8
9
i9600 Data Sheet
18
17
16
15
14
13
12
11
NC
NC
TXE
RXE
OSC1
OSC2
TXD
Vdd (+5V)
page 2