CX81801-7x/8x SmartV.XX Modem Data Sheet
Figure 3-1. CX81801 Modem Hardware Signals for Parallel Interface (PARIF = High)
CRYSTAL
CIRCUIT
114
115
113
61
49
111
240K
+3.3V
57
47
XTLI
XTLO
CLKIN
CLKOUT
XCLK
DV1TP
LPO
NOXYCK
LINE_SEL (PE7)
23
47K
+3.3V
47K
+3.3V
NC
47K
+3.3V
NC
NC
NC
RESERVED (PA5)
RESERVED (PA4)
RESERVED (PE5)
RESERVED (PE2)
RESERVED (PA3)
31
29
21
17
28
14
NC
NC
NC
NC
5
PARIF
RESERVED (PE0)
NC
+3.3V
9
117
34
11
13
12
109
6
7
8
122
123
125
126
127
1
3
4
STPMODE# (PD3)
NMI#
RESET#
HCS# (PD4)
HRD# (PD6)
HWT# (PD5)
HINT (PB7)
HA0 (PD0)
HA1 (PD1)
HA2 (PD2)
HD0 (PC0)
HD1 (PC1)
HD2 (PC2)
HD3 (PC3)
HD4 (PC4)
HD5 (PC5)
HD6 (PC6)
HD7 (PC7)
VOICE# (PE1)
HS_LCS (PE4)
16
19
VOICE#
HS_LCS
DAA
DSPKOUT
PWRCLKP
PWRCLKN
DIB_DATAP
DIB_DATAN
98
96
97
93
94
SPEAKER CIRCUIT
DIGITAL ISOLATION
BARRIER (DIB)
HOST
PARALLEL
BUS
IASLEEP (P_PF05)
M_CLK (P_PB00)
SR2CLK (P_PGP05)
SA2CLK (P_PX05)
SR3OUT
SR3IN (P_PX01)
SR2IO (P_PX06)
50
37
92
38
35
36
39
SLEEP
M_CLKIN
M_SCK
M_STROBE
M_TXSIN
M_RXOUT
M_CNTRLSIN
CX20442
VOICE CODEC (VC)
(OPTIONAL)
NC
24
22
26
110
121
45
46
27
32
101
55
54
56
51
59
52
41
42
43
60
2
15
40
58
78
100
108
116
124
20
53
85
10
25
30
44
48
68
90
95
103
112
120
128
RESERVED (PA0)
RESERVED (PE6)
RESERVED (PA1)
TESTP
PHS2
SR4IN
PD7
RESERVED (PA2)
RESERVED (PA6)
RESERVED (PB1)
RESERVED (P_PA00)
RESERVED (P_PA04)
RESERVED (P_PA05)
RESERVED (P_PB01)
RESERVED (BD2CLK)
RESERVED (P_GP00)
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
CX81801
Smart Modem
128-Pin TQFP
Parallel Interface
(PARIF = High)
NVMCLK (PA7)
NVMDATA (PE3)
33
18
EEPROM
(OPTIONAL)
+3.3V or +5V
+3.3V
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16 (PB0)
A17 (PB4)
A18 (PB5)
D0
D1
D2
D3
D4
D5
D6
D7
WRITE#
READ#
ROMSEL# (PB2)
RAMSEL# (PB3)
EXT_RES# (PB6)
PLLVDD
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
0.1 uF
NC
EXTERNAL MEMORY
+3.3V
PLLGND
83
102199_003
3-4
Conexant
102199B
CONEXANT [ CONEXANT SYSTEMS, INC ]
