LUCL9311AP-D AGERE [Agere Systems], LUCL9311AP-D Datasheet - Page 9

• Manufacturer Part Number: LUCL9311AP-D
• Description: Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access
• Manufacturer: AGERE [Agere Systems]

July 2001
Architecture
Table 1. Pin Descriptions
Agere Systems Inc.
Pin
VITR
V
VTX
1
2
3
4
5
6
7
8
REF
PR
PT
5 M
5 M
Symbol
V
LCTH
V
OVH
V
CF2
CF1
FB2
FB1
PROG
DD
66.7 k
REF
V
DD
DGND
Figure 2. Test Diagram
DGND
Type
(continued)
—
—
—
—
O
I
I
I
Loop Closure Program Input. Connect a voltage source or ground, via a resistor, to this
point to program 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 program the
overhead voltage. Voltage source may be external or derived via a resistor divider from
V
of the overhead voltage. If a resistor or voltage source is not connected, the overhead
voltage will default to approximately 5.5 V (sufficient to pass 3.14 dBm in to 900 ). If the
default overhead is desired, connect this pin to ground.
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
programmable external voltage source may be used to provide software control of the
loop closure threshold.
Filter Capacitor. Connect a 0.1 F capacitor from this node to ground 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.
Polarity Reversal Slowdown Capacitor. Connect a capacitor from this node to ground
to control the rate of battery reversal. If controlled battery reversal is not desired, leave
pin is open.
Polarity Reversal Slowdown Capacitor. Connect a capacitor from this node to ground
to control the rate of battery reversal. If controlled battery reversal is not desired, leave
pin is open.
REF
. A programmable external voltage source may be used to provide software control
+
–
66.7 k
TEST BLOCK
TESTLEV
12-3525c (F)
Pin Information
TESTLEV
TESTSIG
Name/Function
RPWR
BGND
BGND
TIE A
V
V
Ringing Relay, and GR-909 Test Access
LCF
BAT1
BAT1
FB2
FB1
7
8
9
10
10
11
12
13
14
15
16
17
18
6
19
Figure 3. 44-Pin PLCC
5
20 21 22 23 24 25 26 27 28
4
3
2
L9311AP
1 44 43 42 41 40
39
38
37
36
35
34
33
32
31
30
29
12-3522d (F)
REF
TXI
NC
ITR
VTX
ICM
RGDET
DGND
V
LATCH
RESET
B0
DD
. A
9