cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 47

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

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60
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63
64
Table 3-3. CX81801 Modem 128-Pin LQFP Pin Signals for Serial Interface (PARIF = Low) (Continued)
Notes:
1.
2.
102247B
Pin
I/O Types: See Table 3-5.
Interface Legend:
DIB Digital Isolation Barrier
EB
HB
NC
VC
NOXYCK
GND
XCLK
IASLEEP (P_PF05)
RXCLK# (P_PB01)
XTCLK# (GP00)
VDD_CORE
TXCLK# (P_PA04)
RESERVED
(P_PA00)
RESERVED
(P_PA05)
LPO
VDD
RESERVED
(BD2CLK)
VGG
CLKOUT
D0
D1
D2
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
Signal Label
Expansion Bus
Host Bus
No internal pin connection
Voice Codec
I
G
O
O
O
I
P
O
I/O
I/O
I
P
O
P
O
I/O
I/O
I/O
I/O
Itk/Ot2
Itpu
GND
It/Ot2
Ot2
Itpu/Ot2
It/Ot2
PWR
Itpu/Ot2
Itpu/Ot2
Itpu/Ot2
PWR
Itpu/Ot2
PWRG
It/Ot2
Ith/Ot2
IthOt2
Ith/Ot2
I/O Type
DTE: XTCLK
NC
NC
NC
EB: D0
EB: D1
EB: D2
GND
GND
NC
VC: SLEEP
DTE: RXCLK
Internal core voltage
DTE: TXCLK
+3.3V through 240 KΩ
+3.3V
+3.3V or +5V
NC
Interface
Conexant
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
Pin
DV1TP
GND
CLKIN
XTLI
XTLO
VDD
NMI#
WRITE#
READ#
GND
PHS2
DSR# (PC0)
CTS# (PC1)
VDD
RLSD# (PC2)
PC3
AAIND# (PC4)
GND
Signal Label
I
G
I
I
O
P
I
O
O
G
O
I/O
I/O
P
I/O
I/O
G
O
I/O
Itpu
GND
It
Ix
Ox
PWR
Ithpu
It/Ot2
It/Ot2
GND
Ot2
Ith/Ot8
Ith/Ot8
PWR
Ith/Ot8
Ith/Ot8
Ith/Ot8
GND
I/O Type
Clock Select
GND
GND
Crystal Circuit
+3.3V
+3.3V
EB: WRITE#
EB: READ#
GND
NC
DTE IF: DSR#
DTE IF: CTS#
+3.3V
DTE IF: RLSD#
NC
GND
Crystal Circuit
LED: AAIND#
Interface
3-15