SmartHSF Mobile Modem Data Sheet
RAC2
TAC2
10
12
NC
NC
RAC1
TAC1
9
11
Ring
Filter
C110
R110
PWRCLKN
R112
PWRCLKP
C112
DIB_DATAP
DIB_DATAN
DIGITAL
ISOLATION
BARRIER
R32
(DIB)
POWER AND
CLOCK
CHANNEL
R124
D4
C62
C70
C72
R120 D2
DATA
CHANNEL
R34
C22
R36
C24
NOTES:
1. Consult applicable reference design for exact
component placement and values.
2. R125 is usually installed.
3. R124 is usually removed.
C26
R125
DVDD
C30
C28
EIR
CX20463
EIC
SMARTDAA
DAC
TRDC
LINE SIDE EIO
DEVICE
EIF
15
2
6
5
21
22
27 CLK
(LSD)
32-PIN TQFP
RXI
RXG
TXA
3
4
18
31 PWR+
24 AVDD
MOVEN (GPIO1) 32
26 DVDD
25
23
DGND
AGND
ZW0
ZUS0
TXO
TXF
14
17
20
19
Electronic
Inductor,
Off-Hook,
Pulse Dial,
and TIP and
RING VI
Control
Echo
Cancellation
and
Receiver
Pulse Dial
Voltage
Protection
(Country
Specific)
Impedance
Matching
and
Transmitter
GND_LSD
AGND_LSD
DCF 16
28 DIB_P
AGND_LSD
29 DIB_N
VREF 8
C42
C45
VC 7
DVDD
30 POR
C44
C74
C76
AGND_LSD
RBIAS 13
AGND_LSD
R54
GPIO2 1
AGND_LSD
NC
Safety
and EMI
Protection
AGND_LSD
Telephone
Line
Connector
TIP
RING
Figure 3-3. CX20463 LSD Hardware Interface Signals
100491_F3-09_HI CX20463
100553B
GPIO2
1
EIC
2
RXI
3
RXG
4
TRDC
5
DAC
6
VC
7
VREF
8
24
23
22
21
20
CX20463
19
18
17
AVDD
AGND
EIF
EIO
TXO
TXF
TXA
ZUS0
100491F3-7 PO-20463-32T
Figure 3-4. CX20463 LSD 32-Pin TQFP Pin Signals
Conexant
3-17