L9214A/G
Low-Cost Ringing SLIC
Preliminary Data Sheet
October 2001
ac Applications (continued)
Design Examples (continued)
Example 1, Real Termination (continued)
VBAT1
VBAT2 VCC
RRT1
CVBAT1
CVBAT2
CCC
100 kΩ
DBAT1
0.1 µF 0.1 µF
0.1 µF
CRT
1 µF
VBAT1
BGND VBAT2 VCC AGND ICM TRGDET
ITR
ground key
not used
RTFLT
RGX
RRT2
4750 Ω
150 kΩ
RX
VTX
DCOUT
100 kΩ
RIPROG
5.76 kΩ
CTX
0.1 µF
GSX
IPROG (ILOOP = 25 mA)
IREF
TXI
CC1
0.1 µF
RT6
49.9 kΩ
–
RIREF
28.7 kΩ
DX
VITR
VFXIN
+
RT3
L9214A
RHB1
100 kΩ
PCM
HIGHWAY
69.8 kΩ
+2.4 V
FUSIBLE RESISTOR
OR PTC
CC2
0.1 µF
RRCV
60.4 kΩ
VFRO
PR
PT
DR
30 Ω
RCVP
AGERE
L7591
RGP
RCR
5 kΩ
VBAT1
FSE
FSEP
MCLK
SYNC
AND
CLOCK
26.7 kΩ
CCC1
150 nF
30 Ω
RCVN
FUSIBLE RESISTOR
OR PTC
RGN
17.65 kΩ
CONTROL
INPUTS
ASEL
CF1
CF2
FB1
FB2
NSTAT B3 B2 B1 B0
CF1
1/4 T7504
CODEC
0.22 µF
CF2
0.1 µF
CFB1
0.01 µF
CFB2
0.01 µF
FROM/TO
CONTROL
12-3533.L (F)
Figure 14. Agere T7504 First-Generation Codec; Resistive Termination (5 REN Configuration)
32
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
