LUCL9312AP-D AGERE [Agere Systems], LUCL9312AP-D Datasheet - Page 8

• Manufacturer Part Number: LUCL9312AP-D
• Description: Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications
• Manufacturer: AGERE [Agere Systems]

Forward Battery SLIC and Ringing Relay for TR-57 Applications
Pin Information
Table 1. Pin Descriptions
8
Pin
17,
18,
34
7,
8,
1
2
3
4
5
6
Symbol
V
LCTH
OVH
V
CF2
CF1
NC
PROG
REF
Type
—
—
—
O
I
I
I
Loop Closure Program Input. Connect a voltage source to this point to program the
loop closure threshold. Voltage source may be external and must be connected
through a resistor, or derived via a resistor divider from V
nal voltage source may be used to provide software control of the loop closure
threshold.
SLIC Internal Reference Voltage. Output of internal 2.35 V SLIC reference voltage.
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 resistor
divider from V
software control of the overhead voltage. If a resistor or voltage source is not con-
nected, the overhead voltage will default to approximately 5.5 V (sufficient to pass
3.14 dBm in to 900
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
trol of the loop closure threshold.
Filter Capacitor. Connect a capacitor from this node for filtering.
Filter Capacitor. Connect a capacitor from this node to OVH to control the rate of
change of the overhead voltage. If controlled overhead is not desired, leave this node
open.
No Connect. May not be used as a tie point.
RPWR
BGND
BGND
TIE B
TIE A
REF
V
V
LCF
BAT1
BAT1
NC
NC
NC
. A programmable external voltage source may be used to provide software con-
7
8
9
10
10
11
12
13
14
15
16
17
18
6
REF
19
5
Figure 2. 44-Pin PLCC
. A programmable external voltage source may be used to provide
20 21 22 23 24 25 26 27 28
4
3
). If the default overhead is desired, connect this pin to ground.
L9312AP
2
1 44 43 42 41 40
Name/Function
39
38
37
36
35
34
33
32
31
30
29
TXI
NC
ITR
VTX
AGND
NC
DGND
V
LATCH
RESET
B0
DD
REF
. A programmable exter-
Agere Systems Inc.
July 2001
12-3522f (F)