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參數(shù)資料
| 型號： | XE1000 |
| 英文描述： | Data Access Arrangement (DAA) |
| 中文描述： | 數(shù)據(jù)訪問安排（DAA） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 32K |
| 代理商： | XE1000 |
XECOM
(3)
XE1000
XE1000 Pin Configuration & Descriptions
1
/LS
Active low, "Line Short" is used
during pulse dialing to short the
line for Tinkle Suppression in the
UK. This line must be held to at
least 4.0 volts to disable the Line
Short.
2
Vcc
Vcc is the +5 volt supply voltage
input.
3
/RI
This active low, open collector
output provides a pulse train at
twice the ring frequency present
on tip and ring.
4-6
—
No Pin
7
T1
The positive input/output for differential analog signals.
8
OH
Active low, the on-hook signal places the XE1000 in the on line state. It is pulsed in
combination with LS to provide pulse dialing.
9
GND
Ground reference voltage for all control signals.
10
T2
The negative differential input/output for analog signals.
11
—
No Pin
12
R1
R1 provides the Tip connection to the ring detect circuitry.
13
R2
R1 provides the Ring connection to the ring detect circuitry.
14
RET1
RET1 provides a 600 ohm line match when tied to Pin 17, RET3.
15
RET2
RET2 provides a custom line impedance match when connected to Pin 17, RET3, via
an external RC network.
16
WG1
Normally this pin is tied to Pin 20 but provides a connection for the billing tone filter
when required for homologation.
17
RET3
This pin is used in conjunction with pin 14 or 15 to provide matching line impedance.
18
D1
Normally this pin is tied to Pin 19, Ring, but provides a connection for the billing tone
filter when required for homologation.
19
Ring
This Ring signal provides one of the two wires for connection to the telephone network.
20
D2
Normally this pin is tied to Pin 16 but provides a connection for the billing tone filter
when required for homologation.
21
BS
This wire provides the bell shunt connection for the UK, blue wire.
22
Tip
The Tip signal provides half of the two-wire connection to the telephone network.
PIN NAME
DESCRIPTION
1
2
3
22
21
20
19
18
17
16
15
14
13
12
7
8
9
10
TIP
BS
D2
RING
D1
RET3
WG1
RET2
RET1
R2
R1
/LS
Vcc
/RI
T1
/OH
GND
T2
XE1000
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