User's Manual

18 TRM SB Integration Guide MDS 05-4121A01, Rev. 02
9 IN/OUT Ground (Power and signal)
10 Do not connect—Reserved for factory use only.
11 IN CONFIG—Configure Radio
•
High puts radio in normal payload mode to receive or
transmit data at the programmed rate
• Low puts radio in setup mode to communicate with the
processor at 38.4 kbps asynchronously
12 OUT RSSI—Receive Signal Strength Indicator
•
Analog voltage between 0 and 3 Vdc proportional to
signal strength on the channel
13 IN TX ON—Request to key radio transmitter
•
High puts radio in receive mode
•
Low puts radio in transmit mode
14 OUT RX Data—Receive Data
•
Receive data (off-the-air) in normal operation
•
Control data from the processor in setup mode
15 OUT RX Audio—Filtered receive audio
•
For test purposes only
16 Do not connect—Reserved for factory use only.
17 Not used – Do not connect
18 Vcc—Regulated +3.3 Vdc power for the transceiver
19 IN/OUT Ground (Power and signal)
20 IN/OUT Ground (Power and signal)
21 IN/OUT Ground (Power and signal)
22 IN/OUT Ground (Power and signal)
23 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
24 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
25 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
26 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
27 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
28 IN Vcc—Regulated +3.3 Vdc power for the transceiver*
29 IN Shutdown Mode
• Low puts radio in low-power shutdown
• High or open allows normal operation
30 IN/OUT Ground (Power and signal)
* All Vcc pins should be used to provide sufficient current capacity in transmit mode.
Table 4. DATA INTERFACE Connector Pinouts (Continued)
Pin
Number
Input/
Output Pin Description