TRC105 RFM, TRC105 Datasheet - Page 54

• Manufacturer Part Number: TRC105
• Description: IC TXRX 300MHZ-510MHZ 32TQFN
• Manufacturer: RFM

Specifications of TRC105

• Frequency: 300MHz ~ 510MHz
• Data Rate - Maximum: 200kbps
• Modulation Or Protocol: FSK, OOK
• Applications: General Purpose
• Power - Output: 13dBm
• Sensitivity: -112dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 3mA
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN
• Wireless Frequency: 300 MHz to 510 MHz
• Output Power: 13 dBm
• Operating Supply Voltage: 2.1 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 1.7 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, OOK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 583-1159-2

programming task less time critical. The values of P, S and R for FSK operation on several common frequencies
are given in Table 70. Software for determining P, S and R values for any in-band frequency is provided with the
TRC105 development kit.
6.5 Frequency Synthesizer Channel Programming for OOK Modulation
When using a standard 12.8 MHz reference crystal the RF channel frequency for OOK receive is:
Where F
must be less than (P+1). An F
quency F
MCFG05 bit 0 selects the register set to use with the frequency synthesizer. A 0 value selects register set
MCFG06-MCFG08 and a 1 value selects register set MCFG09-MCFG0B. In addition, MCFG00 bits 4..2 select the
VCO operating band as follows:
The dual register set allows a new frequency to be completely entered in one register set while operating on the
other register set. It is important to load all three divider parameters into a register set before switching control to
it. Otherwise, a transient out-of-band frequency shift can occur. The dual register set facilitates FHSS operation,
as the operating frequency for the next hop can be loaded anytime during the current hop interval, making this
programming task less time critical. The values of P, S and R for OOK receive operation on several common fre-
quencies are given in Table 73 for a 0.1 MHz F
frequency is provided with the TRC105 development kit.
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©2009-2010 by RF Monolithics, Inc.
F
TXRF
IF2
TXRF
. There are two sets of three registers that hold the values of P, S and R:
and transmitter deviation frequency F
E-mail:
= (14.4*(75*(P + 1) + S)/(R + 1)) - F
[e-mail]
DEV
MCFG00 bits 4..2
Configuration
value of 0.1 MHz is normally used, which must match the receiver low IF fre-
R
P
S
MCFG00 bits 4..2
MCFG0A
MCFG0B
Register
MCFG06
MCFG07
MCFG08
MCFG09
Technical support +1.800.704.6079
000
001
010
011
100
101
IF2
. Software for determining P, S and R values for any in-band
DEV
DEV
315 MHz
Table 70
, with P, S in the range 0 to 255, R in the range of 64 to 169
Table 71
Table 72
000
119
34
0
are in MHz, and P, S, and R are divider integers where S
Divider Parameter
Band, MHz
434 MHz
300-330
330-365
365-400
400-440
440-470
470-510
011
107
R1
P1
S1
R2
P2
S2
42
30
447 MHz
100
143
58
45
TRC105 - 11/01/10
Page 54 of 66