Linx Technologies TRM-915-DTS - Manual (Page 5)

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Figure 4: Electrical Specifications
DTS Series Transceiver Specifications
Parameter Symbol Min. Typ. Max. Units Notes
Adjacent Channel Rejection –48 dBc 6
IF Bandwidth
DTS Mode 600 kHz
LP Mode 200 kHz
Transmitter Section
Output Power P
O
dBm
Low Power –4 –1 dBm 5
Mid-Low Power 1 4 dBm 5
Mid-High Power 11 14 dBm 5
Harmonic Emissions P
H
–50 dBc 5
Frequency Deviation
DTS Mode ±235 kHz
LP Mode ±75 kHz
Interface Section
Input
Logic Low V
I L
0 0.3*Vcc VDC
Logic High V
I H
0.7*Vcc 5.0 VDC
Output
Logic Low V
OL
0 0.4 VDC
Logic High V
OH
2.5 Vcc VDC
Flash Specifications (Non-Volatile Registers)
Flash Write Duration 16 21 ms
Flash Write Cycles 20k 100k cycles
1. Vcc = 3.3VDC
2. Varies with data rate
3. Continuous operation, varies with
UART data rate
4. F
LO
+1MHz and F
LO
+1.945MHz
5. Into a 50-ohm load
6. Fc ± 650kHz
7. Encoding/overhead losses included,
144 byte MTU
Pin Assignments
3
2 1
GND
NC
4
5
6
8
7
9
10
11
12
13
14
15
16
17
18
19
GND
GND
GND
GND
VCC
NC
CMD
RXD
TXD
CTS
NC
NC
C2D
RESET
GND
ANT
GND
Figure 5: DTS Series Transceiver Pin Assignments (Top View)
Pin Descriptions
Pin Number Name I/O Description
1, 12, 14, 15,
16, 17, 18
GND — Ground
2, 3, 8, 9
NC —
No Electrical Connection. Do not connect
any traces to these lines.
4 CMD I
Command Input. This line sets the serial
data as either command data to configure
the module or packet data to be sent over
the air. Pull low for command data; pull high
for packet data.
5 RXD I
UART Receive Data Input. This is the input
line for the configuration commands as well
as data to be sent over the air.
6 TXD O
UART Transmit Data Output. This is the
output line for the configuration command
responses as well as the data received over
the air.
7 CTS O
UART Clear To Send, active low. This line
indicates to the host microcontroller when
the module is ready to accept data. When
CTS is high, the module is busy. When CTS
is low, the module is ready for data.
10 C2D — Reserved
11 RESET — Reserved
13 ANT — 50-ohm RF Antenna Port
19 VCC — Supply Voltage
Figure 6: DTS Series Transceiver Pin Descriptions
Pin Descriptions