cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 44

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

Figure 3-3. CX81801 Modem Hardware Signals for Serial Interface (PARIF = Low)
3-12
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
SYNCHRONOUS
SERIAL DTE
SERIAL DTE
INTERFACE
INTERFACE
RESET CIRCUIT
CRYSTAL
CLOCKS
CIRCUIT
+3.3V
LED
NC
NC
+3.3V
+3.3V
NC
NC
NC
NC
240K
114
115
113
111
117
127
109
123
122
125
110
121
126
101
100
108
116
124
103
112
120
128
61
49
57
47
34
14
27
32
11
13
51
54
52
24
22
26
45
46
12
55
56
59
41
42
43
60
15
40
58
78
20
53
85
10
25
30
44
48
68
90
95
5
9
6
3
1
7
8
4
2
XTLI
XTLO
CLKIN
CLKOUT
XCLK
DV1TP
LPO
NOXYCK
PARIF
STPMODE# (PD3)
NMI#
RESET#
AAIND# (PC4)
TMIND# (PB7)
DTRIND# (PD0)
OHIND# (PE0)
TXD# (PA2)
RXD# (PA6)
CTS# (PC1)
DSR# (PC0)
RLSD# (PC2)
TM# (PC6)
RI# (PC5)
DTR# (PD4)
RTS# (PD6)
RXCLK# (P_PB01)
TXCLK# (P_PA05)
XTCLK # (P_GP00)
RESERVED (PA0)
RESERVED (PE6)
RESERVED (PA1)
TESTP
PHS2
SR4IN
PC3
PD1
PD2
PD7
RESERVED (PB1)
RESERVED (PC7)
RESERVED (PD5)
RESERVED (P_PA00)
RESERVED (P_PA05)
RESERVED (BD2CLK)
P_PX00
P_PX02
P_PX03
VGG
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD_CORE
VDD_CORE
VDD_CORE
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Serial Interface
(PARIF = Low)
Smart Modem
128-Pin LQFP
CX81801
Conexant
SR2CLK (P_PGP05)
IASLEEP (P_PF05)
RESERVED (PA5)
RESERVED (PA4)
RESERVED (PE5)
RESERVED (PE2)
RESERVED (PA3)
SA2CLK (P_PX05)
M_CLK (P_PB00)
EXT_RES# (PB6)
NVMDATA (PE3)
SR2IO (P_PX06)
ROMSEL# (PB2)
LINE_SEL (PE7)
SR3IN (P_PX01)
RAMSEL# (PB3)
NVMCLK (PA7)
HS_LCS (PE4)
VOICE# (PE1)
DIB_DATAP
DIB_DATAN
PWRCLKP
PWRCLKN
DSPKOUT
A16 (PB0)
A17 (PB4)
A18 (PB5)
SR3OUT
PLLGND
WRITE#
PLLVDD
READ#
A10
A11
A12
A13
A14
A15
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
D0
D1
D2
D3
D4
D5
D6
D7
23
31
29
21
17
28
16
19
98
96
97
93
94
50
37
92
38
35
36
39
33
18
71
72
73
74
75
76
77
79
80
81
84
86
87
88
89
91
99
105
106
62
63
64
65
66
67
69
70
118
119
102
104
107
82
83
47K
47K
47K
0.1 uF
SLEEP
M_CLKIN
M_SCK
M_STROBE
M_TXSIN
M_RXOUT
M_CNTRLSIN
+3.3V
+3.3V
NC
+3.3V
NC
NC
VOICE#
HS_LCS
SPEAKER CIRCUIT
NC
DIGITAL ISOLATION
BARRIER (DIB)
EEPROM (OPTIONAL)
EXTERNAL MEMORY
+3.3V
CX20442
VOICE CODEC (VC)
(OPTIONAL)
DAA
102199_005
102247B