xe0055cs2 ETC-unknow, xe0055cs2 Datasheet - Page 3

• Manufacturer Part Number: xe0055cs2
• Description: Miniature Telephone Line Interface Module Applications
• Manufacturer: ETC-unknow

XE0055CS2 Pin Configuration
XE0055CS2 Pin Descriptions
XECOM
Pin
1
2
3
4
5
6
7
8
9
Ring Tip
1
o
Name
CD
/RI
Ring
Tip
OH
T1
GND
VCC
T2
2
o
4). This device is not sensitive to the polarity of the battery voltage on the telephone
line. Ring has 1500 volts isolation from the rest of the circuitry. This isolation must
be preserved throughout the system.
Tip provides the second connection to the telephone network (RJ11 Pin 3). Tip has
1500 volts isolation from the rest of the circuitry. This isolation must be preserved
throughout the system.
Hook-switch relay control input. A high on OH closes the internal relay and con-
nects the equipment to the telephone line.
T1 connects directly to the secondary side of the XE0055CS2 telephone line trans-
former.
This pin is used as common reference for all of the control signals in the
XE0055CS2. Signals on T1 and T2 are not referenced to ground.
VCC provides the power source for the hook-switch control. The XE0055CS2 will
operate with VCC equal to either 3.3 or 5 volts
T2 connects directly to the secondary side of the telephone line transformer of the
XE0055CS2
Ring Indicate, output, active low, TTL, RI provides a half-wave representation of the
Ring appearing on the telephone line. An external pull-up resistor is required to cor-
rectly bias the ring indicate output.
The Connect Detect output indicates the status of the local telephone line. A high on
CD indicates that the local telephone line is connected and is not currently in use. A
low on CD indicates that the local telephone line is either disconnected from the
XE0055CS2 or is being used by some other telephone equipment.
Description
Ring is one of two signals which form the telephone network connection (RJ11 Pin
OH T1 Gnd Vcc T2
3
o
XE0055CS2
4
o
(3)
5
o
6
o
7
o
/RI
8
o
XE0055CS2
CD
9
o