XE1205I074TRLF Semtech, XE1205I074TRLF Datasheet - Page 29

• Manufacturer Part Number: XE1205I074TRLF
• Description: IC TXRX 433/868/915MHZ 48-VQFN
• Manufacturer: Semtech

Specifications of XE1205I074TRLF

• Frequency: 180MHz Center
• Data Rate - Maximum: 152.3kbps
• Modulation Or Protocol: FSK
• Applications: AMR, ISM, Home Automation, Process Control
• Power - Output: 0 ~ 15dBm
• Sensitivity: -121dBm
• Voltage - Supply: 2.4 V ~ 3.6 V
• Current - Receiving: 14mA
• Current - Transmitting: 62mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-VQFN
• Receiving Current: 14mA
• Transmitting Current: 62mA
• Data Rate: 4.8Kbps
• Modulation Type: FSK
• Rf Ic Case Style: VQFN
• No. Of Pins: 48
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: XE1205I074TR

7.2.2
The detailed description of the MCParam register is given in Table 17.
Name
Chip_mode(1:0)
Select_mode
Buffered_mode
Data_unidir
Band(1:0)
Freq_dev(8)
Freq_dev(7:0)
Knx
Br(6:0)
© Semtech 2008
MCParam configuration register (main configuration parameters)
Bits
7-6
5
4
3
2-1
0
7-0
7
6-0
Address RW
0
0
0
0
0
0
1
2
2
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description
Transceiver mode:
00 -> sleep mode
01 -> receive mode
10 -> transmit mode
11 -> stand-by mode
Transceiver mode selection:
0 -> mode defined by MCParam_chip_mode, SW(1:0) is an output
1 -> mode defined by SW(1:0) :
Enable buffered mode:
0 -> continuous mode
1 -> buffered mode
Configure DATA pin
0 -> DATA is a bidirectional pin:
1 -> DATA is an output pin:
Frequency band:
01 -> 433 – 435 MHz
10 -> 863 – 870 MHz
11 -> 902 – 928 MHz
Frequency deviation MSB
Frequency deviation:
Δf = int(Freq_dev(8:0)) * FSTEP
Where int(x) = integer value of the binary representation of x
Example
000000001 -> Δf = FSTEP
111111111 -> Δf = 511*FSTEP
all these frequency deviations are available if the data shaping filter is
disabled (please refer to
Konnex mode enable
0 -> default mode -> bit rate defined by MCParam_Br(6:0)
1 -> Konnex mode-> bit rate = 32.7 kbit/s
Bit rate
Br = 152.34e3/(int(Br) + 1)
Where int(x) = integer value of the binary representation of x.
Example:
0000001 -> Br = 76.1 kbit/s
1111111 -> Br = 1.19 kbit/s
Note: if Konnex mode is enabled, then bit rate = 32.7 kbit/s.
sleep mode
receiver mode
transmitter mode -> SW(1:0) = “10”
stand-by mode
SW(1:0) = 00 -> sleep mode
SW(1:0) = 01 -> receive mode
SW(1:0) = 10 -> transmit mode
SW(1:0) = 11 -> stand-by mode
input in transmit, output in receive mode
output in receive mode, high-impedance in transmit mode
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-> SW(1:0) = ”00”
-> SW(1:0) = “01”
-> SW(1:0) = “00”
Table 11
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XE1205
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