XE0002D Cermetek Microelectronics, XE0002D Datasheet - Page 3

• Manufacturer Part Number: XE0002D
• Manufacturer: Cermetek Microelectronics

Specifications of XE0002D

• Lead Free Status / RoHS Status: Supplier Unconfirmed

XE0002D Pin Descriptions
11-14
Pin
XECOM
10
17
20
1
2
3
4
5
6
7
8
9
RCVR
XFMR
Name
XMIT
VDD
VCC
Ring
Gnd
OH
/RI
Tip
T1
T2
VDD supplies -5 Volt power to the XE0002D’s 2 to 4 wire converter.
VCC supplies +5 Volts power to the XE0002D
Ring Indicate, output, active low, TTL. /RI indicates the XE0002D is receiving a ring
signal. /RI remains low for the duration of each ring.
RCVR acts as the analog output from the XE0002D’s 2 to 4 wire converter. Signals
pass from the telephone line to the host via RCVR
XMIT provides the analog input to the XE0002D’s 2 to 4 wire converter. Signals
placed on XMIT are sent out onto the telephone line.
XFMR is provided to connect the internal 2 to 4 wire converter to the telephone line
transformer. A jumper is required from XFMR to T1 whenever the 2 to 4 wire circuit
is required.
T1 is one of two direct connections to the internal telephone line transformer. T1
must be connected to the XE0002D XFMR lead to use the internal 2 to 4 wire
converter. If the 2 to 4 wire converter is not required, Signals for the telephone line
can be passed across T1 and T2.
Hookswitch relay control. A high on OH closes the internal relay and connects the
equipment to the telephone line.
Gnd provides the ground reference connection to the XE0002D.
T2 is one of two direct connections to the internal telephone line transformer. T2
must be connected to Ground to use the internal 2 to 4 wire converter. If the 2 to 4
wire converter is not required, Signals for the telephone line can be passed across T1
and T2.
No Connection
Ring is one wire of the two-wire telephone line connection (RJ11 Pin 4). FCC Part
68 Rules require a 1500 volt isolation barrier between the telephone line and all other
circuits. This isolation must be preserved throughout the system. Xecom
recommends 0.100 inch spacing between traces connected to Ring and all other
conductors to preserve this isolation
Tip is one wire of the two-wire telephone line connection (RJ11 Pin 3). The
telephone company places a DC "Battery" voltage across Tip and Ring on all public
switched telephone lines. The XE0002D accept this line battery voltage without
regard to its polarity.
Description
(3)
XE0002D