WI.232EUR-R Radiotronix, WI.232EUR-R Datasheet - Page 20

• Manufacturer Part Number: WI.232EUR-R
• Description: EMBEDDED RADIO MODULE
• Manufacturer: Radiotronix

Specifications of WI.232EUR-R

• Frequency Rf: 869.885MHz
• Module Interface: Serial, UART
• Tool / Board Applications: Wireless Connectivity-ZigBee, RF, Infrared, USB
• Sensitivity: -106dBm
• Data Rate Max: 76.8Kbps
• Supply Current: 65mA
• Maximum Frequency: 869.885 MHz
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Frequency: 868.225 MHz
• Minimum Operating Temperature: - 40 C
• Product: RF Modules
• Frequency Range: 868.225MHz To 869.885MHz
• Supply Voltage Range: 2.7V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Set to 0x01 to enable CRC mode, or 0x00 to disable CRC mode. The default CRC mode setting
is enabled.
8.8.
This register determines the UART buffer level that will trigger the transmission of a packet. The
minimum value is 1 and the maximum value is 144. The default value for this register is 64,
which provides a good mix of throughput and latency.
8.9.
Setting this register to 0x00 will suppress the start-up message, including firmware version, that is
sent to the UART when the module is reset. A value of 0x01 will cause the message to be
displayed after reset. By default, the module start-up message will be displayed.
8.10. CSMA enable
Carrier-sense multiple access (CSMA) is a best-effort delivery system that listens to the channel
before transmitting a message. If another Wi.232 module is already transmitting when a
message is queued, the module will wait before sending its payload. This helps to eliminate RF
message corruption at the expense of additional latency. Setting this register to 0x01 will enable
CSMA. Setting this register to 0x00 will disable CSMA. By default, CSMA is enabled.
8.11. Sleep control
Setting this register to 0x01 will place the module into sleep mode; 0x02 will place the module in
standby mode. Sleep mode places the module in the lowest power inactive state (~35µA) and
requires approximately 7-8ms to resume transmission or reception once awakened. Standby
draws ~850µA and requires approximately 1-2ms to awaken. To wake up the module, send four
0xFF bytes to the UART in a row or perform a hard reset. If four 0xFF bytes are used to wake the
module, the fifth character sent to the UART will be transmitted over the RF link. Upon
Wi.232EUR User’s Manual
R/W
R/W
R/W
R/W
B7
B7
B7
B7
regNVCSMAMODE (0x0B)
7
7
7
7
regNVSHOWVER (0x0A)
regNVSLPMODE (0x0D)
regNVUARTMTU (0x09)
UART minimum transmission unit
Verbose mode
R/W
R/W
R/W
R/W
B6
B6
B6
B6
6
6
6
6
R/W
R/W
R/W
R/W
B5
B5
B5
B5
5
5
5
5
© 2003-2007 Radiotronix Inc.
R/W
R/W
R/W
R/W
B4
B4
B4
B4
4
4
4
4
R/W
R/W
R/W
R/W
B3
B3
B3
B3
3
3
3
3
R/W
R/W
R/W
R/W
B2
B2
B2
B2
2
2
2
2
regCSMAMODE (0x56)
regUARTMTU (0x54)
regSLPMODE (0x58)
R/W
R/W
R/W
R/W
B1
B1
B1
B1
1
1
1
1
R/W
R/W
R/W
R/W
B0
B0
B0
B0
0
0
0
0
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