LUCL9312AP-D AGERE [Agere Systems], LUCL9312AP-D Datasheet - Page 38

• 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
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. Also, this exam-
ple illustrates the device using the battery switch with multiple battery operation, programmable current limit, and
programmable loop closure threshold. Please see the T8535/6 data sheet for information on coefficient program-
ming.
Figure 16. L9312 for Agere T8536 Third-Generation Codec, Dual Battery Operation, ac and dc Parameters,
38
PROGRAMMABLE
FUSIBLE
FUSIBLE
OR PTC
OR PTC
50
50
V
BAT
VOLTAGE
SOURCE
FROM
0.015 F
180 V—330 V
SECONDARY
PROTECTOR
100 V—130 V
SECONDARY
PROTECTOR
RINGING
SOURCE
400
1 M
R
C
R
Fully Programmable
RTF
F2
S1
0.1 F
C
RTS
PT
T
R
RSW
RTS
PR
OVH
V
LCTH (THRESHOLD = 11 mA)
V
CF2
(continued)
RING
PROG
REF
RING
V
V
PWR
BAT2
BAT2
C
(I
0.1 F
LIMIT
VBAT2
/
V
V
= 25 mA)
BAT1
CF1
BAT1
C
0.1 F
VBAT1
BGND
(GAIN OF 2)
V
L9312
CC
V
CC
0.1 F
C
CC
AGND
A
V
V
DD
DD
0.1 F
C
DD
DGND
RCVP
RCVN
VITR
VTX
LCF
ITR
TXI
D
NSTAT
RESET
LATCH
R
6.34 k
C
0.15 F
B2
B1
B0
GX
TX
0.33 F
C
C1
R
20 M
CIN
VFXIN
VFROP
VFRON
SLIC0a
SLIC1a
SLIC5a
SLIC4a
SLIC3a
SLIC2a
T8536
Agere Systems Inc.
DGND
BCLK
DR0
DR1
DX0
DX1
V
FS
DD
July 2001
0.1 F
CV
PCM
HIGHWAY
SYNC
AND
CLOCK
DD
12-3527i (F)
V
DD