Product manual

XStream‐PKG‐T™TelephoneRFModem–ProductManualv5.x00[2006.02.24]

1.5. Pin Signals

1.5.1. RJ-11 Connector Pin Signals

Figure1‐05. TipandRingPinsoftheRJ‐11Connector

Table1‐04. RJ‐11SignalsandtheirimplementationsontheXStream‐PKG‐TRFModem

Pin Pin Name Description Implementation

3 T1 Tip Dial-tone and talk circuit

4 R1 Ring Dial-tone and talk circuit

2, 5 not used

1, 6 not connected

1.5.2. DB-9 Connector Pin Signals

Figure1‐06. PinsoftheFemaleDB‐9(RS‐232)Connector

Table1‐05. DB‐9(RS‐232)SignalsandtheirimplementationsontheXStream‐PKG‐TRFModem

(Low‐assertedsignalsaredistinguishedbyhorizontallineoverpinname.)

Pin Pin Name Description Implementation

1 Data-Carrier-Detect Set to +5V

2 RXD Received Data

Serial Data OUT of the RF Modem

(to host, from over-the-air))

3 TXD Transmitted Data

Serial Data IN to the RF Modem

(from host, to be transmitted over-the-air)

4 Data-Terminal-Ready

Enables configuration (Serial Port Method) of XStream

OEM RF Module or Telephone Module

5 GND Ground Ground

6 Data-Set-Ready Set to +5V

7 Request-to-Send

Connects DB-9 data lines to XStream RF Module

or Telephone Module when

asserted (+10V)

8 Clear-to-Send Set to +5V

9 RI Ring Indicator not used

Jumpers

Table1‐06. JumpersontheXIB‐TInterfaceBoard

Jumper Description

J3 Connects either or of the Telephone Modem to DI3 (SLEEP) of the on-board RF Module.

Non-populated J1 and J5 jumpers are also available for bypassing the high input voltage

regulators. This would allow the RF modem to be powered with a 5 volt supply. Contact

MaxStream Technical Support for more information.

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