參數(shù)資料
型號(hào)： L9215G
廠商： Lineage Power
英文描述： Short-Loop Sine Wave Ringing SLIC(短環(huán)路正弦波振鈴用戶接口（SLIC）)
中文描述： 短回路正弦波振鈴用戶接口（短環(huán)路正弦波振鈴用戶接口電路（SLIC））
文件頁(yè)數(shù)： 9/46頁(yè)
文件大?。?/td> 1165K
代理商： L9215G
Advance Data Sheet
October 2000
Short-Loop Sine Wave Ringing SLIC
L9215A/G
Lucent Technologies Inc.
9
Pin Information
(continued)
Table 1. Pin Descriptions
32-Pin
PLCC
1
Symbol
Type
Name/Function
NSTAT
O
Loop Closure Detector Output—Ring Trip Detector Output.
When low, this
logic output indicates that an off-hook condition exists or ringing is tripped.
No Connection.
Transmit ac Output Voltage.
Output of internal AAC amplifier. This output is a
voltage that is directly proportional to the differential ac tip/ring current.
Receive ac Signal Input (Noninverting).
This high-impedance input controls to
ac differential voltage on tip and ring. This node is a floating input.
Receive ac Signal Input (Inverting).
This high-impedance input controls to ac dif-
ferential voltage on tip and ring. This node is a floating input.
Power Ring Signal Input.
ac-couple to a sine wave or lower crest factor low-
voltage ring signal. The input here is amplified to provide the full power ring signal
at tip and ring. This signal may be applied continuously, even during nonringing
states.
Receive PPM Signal Input.
ac-couple to a 12 kHz or 16 kHz PPM signal. The
input here is amplified to provide the differential PPM voltage on tip and ring. This
signal may be applied continuously, even during non-PPM modes.
Overhead Voltage Program Input.
Connect a voltage source to this point to pro-
gram the overhead voltage. Voltage source may be external or derived via a resis-
tor divider from V
REF
. A programmable external voltage source may be used to
provide software control of the overhead voltage. If a resistor or voltage source is
not connected, the overhead voltage will default to a nominal 6.0 V. If the default
overhead is desired, connect this pin to ground.
dc Output Voltage.
This output is a voltage that is directly proportional to the
absolute value of the differential tip/ring current. This is used to set ring trip thresh-
old.
Current-Limit Program Input.
Connect a voltage source to this point to program
the dc current limit. Voltage source may be external or derived via a resistor divider
from V
REF
. A programmable external voltage source may be used to provide soft-
ware control of the current limit.
Filter Capacitor.
Connect a capacitor from this node to ground.
Filter Capacitor.
Connect a capacitor from this node to CF2.
Ring Trip Filter.
Connect this lead to DCOUT via a resistor and to AGND with a
capacitor to filter the ring trip circuit to prevent spurious responses. A single-pole
filter is needed.
SLIC Internal Reference Voltage.
Output of internal 1.5 V reference voltage.
Analog Signal Ground.
Analog Power Supply.
User choice of 5 V or 3.3 V nominal power or supply.
Battery Supply 1.
High-voltage battery.
Battery Supply 2.
Lower-voltage battery.
Battery Ground.
Ground return for the battery supplies.
2
3
NC
VITR
—
O
4
RCVP
I
5
RCVN
I
6
RING
IN
I
7
PPM
IN
I
8
OVH
I
9
DCOUT
O
10
V
PROG
I
11
12
13
CF2
CF1
RTFLT
—
—
—
14
15
16
17
18
19
V
REF
AGND
V
CC
V
BAT1
V
BAT2
BGND
O
GND
PWR
PWR
PWR
GND
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