LUCL9218AAR-D AGERE [Agere Systems], LUCL9218AAR-D Datasheet - Page 5

• Manufacturer Part Number: LUCL9218AAR-D
• Description: Low-Cost Line Interface
• Manufacturer: AGERE [Agere Systems]

Data Sheet
November 2001
Agere Systems Inc.
Pin Information
Table 1. Pin Descriptions (continued)
PLCC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
7
8
9
Symbol Type
DCOUT
NSTAT
B2/NC
AGND
BGND
RTSN
LCTH
RTSP
VITR
TSD
V
CF2
CF1
VTX
TXI
NC
NC
PR
TG
B1
B0
PT
BAT
(continued)
I/O
I/O
—
—
—
—
—
—
—
—
—
—
O
O
O
O
O
I
I
I
I
I
Loop Closure Threshold Input. Connect a resistor to VTX to set off-hook
threshold.
dc Output Voltage. This output is a voltage that is directly proportional to the
absolute value of the differential tip/ring current.
Battery Supply. Negative high-voltage power supply.
Protected Ring. The output of the ring driver amplifier and input to loop sens-
ing circuitry. Connect to the loop through overvoltage protection.
Filter Capacitor 2. Connect a 0.1 F capacitor from this pin to AGND.
Filter Capacitor 1. Connect a 0.47 F capacitor from this pin to pin CF2.
Dummy Pin. Used for exact pin-for-pin compatibility with L9219. There is no
physical connection to this pin, however, it may be connected to the B2 control
latch to get an exact PWB footprint match with L9219.
State Control Input. B0 and B1 determine the state of the SLIC. See Table 2.
Pin B1 has an internal pull-down.
State Control Input. B0 and B1 determine the state of the SLIC. See Table 2.
Pin B0 has an internal pull-down.
Analog Signal Ground.
Battery Ground. Ground return for the battery supply.
Protected Tip. The output of the tip driver amplifier and input to loop-sensing
circuitry. Connect to loop through overvoltage protection.
Ring Trip Sense Negative. Connect this pin to the ringing generator signal
through a high-value resistor.
Ring Trip Sense Positive. Connect this pin to the ring relay and the ringer
series resistor through a high-value resistor.
No Connect.
Loop Detector Output/Ring Trip Detector Output. When low, this logic out-
put indicates that an off-hook condition exists or that ringing is tripped.
Transmit ac Output Voltage. This output is a voltage that is directly propor-
tional to the differential tip/ring current.
ac/dc Separation. Connect a 0.1 F capacitor from this point to VTX.
Transmit ac/dc Output Voltage. This output is a voltage that is directly pro-
portional to the differential tip/ring current.
Transmit Gain. Connect an 8.06 k from TG to VTX to set the transmit gain of
the SLIC.
Thermal Shutdown. When high, this logic output indicates the device is in
thermal shutdown.
No Connect.
Description
L9218A/G Low-Cost Line Interface
5