L9214A/G
Low-Cost Ringing SLIC
Preliminary Data Sheet
October 2001
ac Applications (continued)
Design Examples (continued)
ac Interface Using First-Generation Codec (continued)
RPWR
2.0 kΩ
VBAT1
VCC
CVBAT1
CVBAT2
CCC
RRT1
133 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
RTGS
RTFLT
RGX
1.74 kΩ
RRT2
4750 Ω
CGS
12 nF
75 kΩ
VTX
TXI
DCOUT
RIPROG
CTX
0.1 µF
5.76 kΩ
RX
115 kΩ
IPROG (ILOOP = 25 mA)
IREF
GSX
RIREF
RT6
CC1
28.7 kΩ
40.6 kΩ 0.1 µF
VITR
–
L9214A
CN
120 pF
VFXIN
FUSIBLE RESISTOR
OR PTC
DX
+
RT3
PCM
RHB1
PR
PT
+2.4 V
HIGHWAY
49.9 kΩ
30 Ω
113 kΩ
VFRO
AGERE
L7591
RCVP
RCVN
VBAT1
DR
RRCV
59.0 kΩ
CC2
0.1 µF
RN1
127 kΩ
30 Ω
FSE
FSEP
MCLK
SYNC
AND
CLOCK
RGP
54.9 kΩ
FUSIBLE RESISTOR
OR PTC
RN2
47.5 kΩ
CF1
CF2
FB1
FB2
NSTAT B3 B2 B1 B0
FROM/TO CONTROL
CONTROL
INPUTS
ASEL
CF1
0.22 µF
CFB1
CFB2
0.01 µF
CF2
1/4 T7504
CODEC
0.01 µF
0.1 µF
12-3535.m (F)
Figure 17. Agere T7504 First-Generation Codec; Complex Termination with Power Control Resistor (3 REN
Configuration)
Table 21. L9214 Parts List for Agere T7504 First-Generation Codec; Complex Termination with Power
Control Resistor
Name
Value Tolerance
Rating
Function
Fault Protection
RPT
30 Ω
1%
1%
—
Fusible or Protection resistor.
PTC
RPR
30 Ω
Fusible or Protection resistor.
PTC
Protector
Agere
L7591
—
Secondary protection.
38
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
