XE056LCC-1 Cermetek Microelectronics, XE056LCC-1 Datasheet - Page 4

• Manufacturer Part Number: XE056LCC-1
• Manufacturer: Cermetek Microelectronics

Specifications of XE056LCC-1

• Lead Free Status / Rohs Status: Supplier Unconfirmed

16-17 N/C
XE056LCC Pin Descriptions
Pin
18
4-9
10
11
12
13
14
15
1
2
3
Cermetek
Name
GND
VCC
Ring
/OH
N/C
N/C
N/C
Tip
T2
T1
RI
Description
No Connection
Ring is half of the two-wire telephone
line connection (RJ11 Pin 4). FCC
Part 68 Rules require a 1500 volt
isolation barrier between the phone
line and all other circuits. This
isolation must be preserved through-
out the system. Xecom recommends
0.100 inch spacing between the Tip
and Ring traces and all other
conductors to preserve this isolation.
Tip is the other half 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 XE056LCC works regarless of the polarity of the battery voltage.
No Connection
Ground connection to the XE056LCC. Pin 10 supplies the reference for the RI input and
/OH output and should connect to the systems digital ground.
+5 or +3 Volt power source for the XE056LCC. VCC powers the RI and OH control
lines.
to seize the local telephone line. Raising /OH drops the telephone line connection.
/OH can be pulsed to simulate rotary dialing. When rotary dialing, a series of pulses
represents each digit. (One pulse for the digit one to ten pulses for the digit zero.) These
pulses are created by a momentary closure of the hook-switch. The pulse rate in the US
is 10 pulses per second. The pulses must be asymmetrical with the hook-switch closed
for 31 milliseconds then open for 69 milliseconds. A delay of at least 100 milliseconds is
required between digits.
No Connection
T2 and T1 provide the differential analog signal input/output connecting directly to the
secondary side of the XE056LCC line transformer. To match the impedance of the DAA
to the 600 ohm telephone line, a 340 ohm resistor is required on T1 or T2.
T1 and T2 provide the differential analog signal input/output connecting directly to the
secondary side of the XE056LCC line transformer. To match the impedance of the DAA
to the 600 ohm telephone line, a 280 ohm resistor is required on T1 or T2.
No Connection
Active High Ring Indicate output. RI provides a square wave representation of the Ring
signal present on Tip and Ring. This permits intelligent monitoring of the incoming
ring.
Active low Switch-hook control. A low on /OH closes the switch-hook causing the DAA
(4)
Ring
N/C
N/C
N/C
N/C
N/C
N/C
N/C
Tip
XE056LCC Pin Configuration
1
2
3
4
5
6
7
8
9
XE056LCC
(top)
XE056LCC
18
17
16
15
14
13
12
11
10
RI
N/C
N/C
T1
T2
N/C
/OH
VCC
Gnd