L9215A/G
Short-Loop Sine Wave Ringing SLIC
Data Sheet
September 2001
ac Applications (continued)
Design Examples (continued)
Example 1, Real Termination (continued)
VBAT1
VBAT2 VCC
CBAT1
CBAT2
CCC
DBAT1
0.1 µF 0.1 µF
0.1 µF
VBAT1
BGND VBAT2 VCC AGND
ICM TRGDET
ground key
not used
CRT
ITR
RTFLT
RGX
0.1 µF
4750 Ω
RRT
RX
VTX
TXI
383 kΩ
100 kΩ
DCOUT
PR
CTX
0.1 µF
GSX
FUSIBLE OR PTC
30 Ω
CC1
RT6
49.9 kΩ
AGERE
VBAT1
–
+
0.1 µF
L7591
DX
VITR
30 Ω
VFXIN
RHB1
100 kΩ
PT
RT3
69.8 kΩ
L9215A
PCM
HIGHWAY
FUSIBLE OR PTC
+2.4 V
CC2
0.1 µF
OVH (DEFAULT OVERHEAD)
RRCV
60.4 kΩ
VFRO
DR
RCVP
RCVN
RVPROG
RGP
23.7 kΩ
FSE
FSEP
MCLK
26.7 kΩ
SYNC
AND
CLOCK
VPROG (ILIMIT = 25 mA)
VREF
RVREF
80.6 kΩ
rate of battery
reversal not
not
used
RN2
17.65 kΩ
VREF
CF1
ramped
CONTROL
INPUTS
ASEL
CF2 FB1 FB2 NSTAT BR B2 B1 B0 RINGIN PPMIN
CF1
1/4 T7504
CODEC
VREF
C2
0.47 µF
0.22 µF
CF2
0.1 µF
R1
12 kΩ
C1
1.0 µF
Figure 23. Agere T7504 First-Generation Codec Resistive Termination; Nonmeter Pulse Application
Agere Systems Inc.
37
AGERE [ AGERE SYSTEMS ]
