LUCL9310AP-D AGERE [Agere Systems], LUCL9310AP-D Datasheet - Page 57

• Manufacturer Part Number: LUCL9310AP-D
• Description: Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device
• Manufacturer: AGERE [Agere Systems]

July 2001
Agere Systems Inc.
ac Applications
Third-Generation Codec ac Interface Network: Complex Termination
The following reference circuit shows the complete SLIC schematic for interface to the Agere T8536 third-genera-
tion. All ac parameters are programmed by the T8536. Note that this codec differentiates itself in that no external
components are required in the ac interface to provide a dc termination impedance or for stability. For illustration
purposes, 2.2 Vrms PPM injection was assumed in this example, and hybrid meter pulse rejection is used. Also,
this example illustrates the device using the battery switch with multiple battery operation and programmable over-
head, current limit, and loop closure threshold. Please see the T8535/6 data sheet for information on coefficient
programming.
Figure 20. L9310 for Agere T8536 Third-Generation Codec Meter Pulse Application, Dual Battery
PROGRAMMABLE
FUSIBLE
FUSIBLE
OR PTC
OR PTC
VOLTAGE
50
SOURCE
50
V
FROM
BAT
SECONDARY
PROTECTOR
SECONDARY
PROTECTOR
180 V—330 V
100 V—130 V
Operation, ac and dc Parameters, Fully Programmable
RINGING
SOURCE
400
1 M
R
R
RTF
S1
0.1 F
C
RTS
R
LCTH
(continued)
V
BAT2
V
PWR
T
R
RSW
RTS
PR
PT
OVH (OVERHEAD = 9.2 V for 2.2 Vrms PPM)
V
LCTH
V
RING
BAT2
RING
PROG
REF
C
0.1 F
VBAT2
CF1
/
0.015 F
V
V
BAT1
BAT1
C
0.1 F
C
VBAT1
F2
CF2
BGND
Full-Feature SLIC, Ringing Relay, and Test Access Device
V
CC
V
CC
0.1 F
(GAIN OF 2)
C
RESET
CC
L9310
AGND V
MICROPROCESSOR
TESTLEV
A
V
DD
DD
PER-LINE
TO/FROM
0.1 F
C
DD
DGND
TESTSIG
ICM
D
PPMOUT
TRGDET
PPMIN
RCVN
RCVP
VITR
TXN
VTX
V
FB2
FB1
LCF
ITR
TXI
REF
0.01 F
C
NSTAT
RESET
PPM
R
17.4 k
R
6.34 k
C
0.15 F
B3
B2
B1
B0
PPM
GX
TX
0.33 F
C
C1
GENERATION
2.2 Vrms at T/R
0.7 Vrms for
RAMPED
PPM
R
20 M
CIN
VFXIN
VFROP
VFRON
SLIC0a
SLIC5a
SLIC4a
SLIC3a
SLIC2a
SLIC1a
T8536
DGND
BCLK
DR0
DR1
DX0
DX1
V
FS
DD
0.1 F
CV
PCM
HIGHWAY
SYNC
AND
CLOCK
DD
12-3527f (F)
V
DD
57