XE014JS View Datasheet(PDF) - Xecom
Part Name
Description
Manufacturer
XE014JS Datasheet PDF : 11 Pages
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Figure 2: XE014JS Pin Configuration
N/C 1
Ring 2
Tip 3
N/C 4
N/C 5
N/C 6
N/C 7
/Hint 8
/CD 9
XE014JS
(top)
18 RI(-)
17 RI(+)
16 OH(+)
15 T1
14 T2
13 N/C
12 OH(-)
11 VCC
10 Gnd
Pin Descriptions
PIN NAME DESCRIPTION
1
N/C No Connection
2
Ring
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.
3
Tip
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 XE014JS
accepts this line battery voltage without regard to its polarity.
4-7
N/C
No Connection
8
/Hint
Handset Interrupt provides an active low output to indicate when another piece of equipment goes off-
hook on the shared telephone line. When the XE014JS detects a drop of at least one volt in the DC line
voltage, /Hint goes low for two to six seconds to notify the host equipment that the is required by other
equipment. The host equipment is responsibel for deactivating the OH line to return the XE014JS to the
on-hook state.
9
/CD
Connect Detect is an active low output which indicates that the local telephone line is available for use.
/CD remains active as long as the DC line voltage remains above 36 volts.
10
GND
Ground connection to the XE014JS. This signal provides the reference for the OH output and RI input.
This pin should be connected to the systems digital ground.
11
VCC
+5 Volt power source for the XE014JS. VCC powers the RI and OH control lines.
12
OH(-)
Modem switch-hook control: OH(-), an active low input, for controls the switch hook in the XE014JS.
When the host activates pin 12, the switch-hook closes and the XE014JS seizes the local telephone line.
Pin 16 provides an active high switch-hook control. OH(-) should remain open when using OH(+).
The host can pulse OH(-) line to perform rotary dialing. The normal pulse rate is ten pulses per second.
Closing the switch-hook creates a series of pulses. Dial one pulse for the digit one to ten pulses for the
digit zero. The pulses on OH(-) must be asymmetrical, active for thirty-one milliseconds, inactive for
sixty-nine milliseconds. An inter-digit delay of at least one hundred milliseconds is required.
XECOM
(2)
XE014JS
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