cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 55

• Manufacturer Part Number: cx20493-35/app
• Description: With Cx20493 Smartdaa?
• Manufacturer: Conexant Systems, Inc.

3.2.1.4
3.2.1.5
3.2.2
Figure 3-5. CX20493 LSD Hardware Interface Signals
102247B
DIB_DATAN
DIB_DATAP
PWRCLKN
PWRCLKP
NOTE:
Consult applicable reference design for exact component
placement and values, and for layout guidelines.
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
C950
R950
R952
C952
R924
R926
POWER AND
ISOLATION
CHANNEL
CHANNEL
BARRIER
DIGITAL
CLOCK
DATA
(DIB)
C922
C924
CX20493 LSD Pin Assignments and Signal Definitions
C962
R990
R922
General Purpose Input/Output
There is one unassigned general purpose input/output pin:
•
No Connects
There is one No Connect pin:
•
CX20493 LSD hardware interface signals are shown by major interface in Figure 3-5, are
shown by pin number in Figure 3-6, and are listed by pin number in Table 3-7.
CX20493 LSD hardware interface signals are defined in Table 3-8.
CX20493 LSD GPIO DC electrical characteristics are specified in Table 3-9.
CX20493 LSD AVdd DC electrical characteristics are listed in Table 3-10.
BR908 CC
BR908
General Purpose Input/Output 1 (GPIO1, pin 32); input/output
No Connect (NC, pin 17); no internal connection
+
BR908 AC1
-
PCLK2
C970
R932
AGND_LSD
Vdd
C930
CLK2
AGND_LSD
GND_TIE
C978
DGND_LSD
U908
Vdd
1, 9, 16, 18, 25
DGND_LSD
C926
FB906
C928
Conexant
26, 27
2, 3
28
29
30
31
8
7
DVdd
CLK
PWR+
AVdd
AGnd
DIB_P
DIB_N
DC_GND
DGnd
32-Pin LQFP
SmartDAA 3
Line Side
CX20493
Device
(LSD)
GPIO1
TRDC
RAC2
RAC1
RBias
TAC2
TAC1
VRef
TXO
TXF
EIC
EIO
RXI
EIF
NC
VZ
Vc
C944
22
21
24
23
12
13
20
19
10
11
15
14
6
5
4
32
17
and TIP and
Transmitter
NC
NC
Impedance
Pulse Dial,
R954
(Optional)
Electronic
Off-Hook,
Matching
On-hook
Inductor,
Coupling
C974
Monitor
RING VI
Receive
Control
AGND_LSD
Filter
AGND_LSD
Ring
and
C940
C976
AGND_LSD
Protection
and EMI
Safety
Telephone
Connector
Line
102247_007
3-23
TIP
RING