ds22-l100-041 Conexant Systems, Inc., ds22-l100-041 Datasheet - Page 26

• Manufacturer Part Number: ds22-l100-041
• Description: Cx84100-41/-23 Scxv.22bis Modem V.22bis Modem With Cx20493 Smartdaa? Line Side Device
• Manufacturer: Conexant Systems, Inc.

3.1.1.5
3.1.2
Figure 3-1. CX84100 V.22bis Modem Hardware Interface Signals
3-2
ALTERNATIVE INTERFACE
28.224 MHZ CRYSTAL
SERIAL DTE
INTERFACE
28.224 MHZ CLOCK
RESET CIRCUIT
+3.3V
CIRCUIT
CX84100 V.22bis Modem Pin Assignments and Signal Definitions
+3.3V
RLSD#
+3.3V
RXD#
CTS#
DTR#
RTS#
TXD#
RI#
NC
NC
47K
240K
Crystal/Clock and Power Signals
Supported crystal and power signals are:
•
•
•
•
CX84100 V.22bis Modem 28-pin TSSOP hardware interface signals for serial interface
are shown by major interface in Figure 3-1, are shown by pin number in Figure 3-2, and
are listed by pin number in Table 3-1.
CX84100 V.22bis Modem hardware interface signals for serial interface are defined in
Table 3-2.
I/O types are defined in Table 3-3. DC electrical characteristics are listed in Table 3-4.
100 pF
NC
47K
CX84100-41/-23 SCXV.22bis Modem Data Sheet
Crystal/Clock input: XTLI
Crystal return: XTLO
+3.3 V power: VDD
Ground; GND
22
11
17
18
12
10
23
25
7
3
5
4
8
6
1
2
1
2
9
VDD
VDD
RESET#
TXD#
RXD#
CTS#
RLSD#
RI#
DTR#
RTS#
TDCLK#
RDCLK#
XTLI
XTLO
XTLI
XTLO
LPO
GND
GND
V.22bis Modem
28-Pin TSSOP
Conexant
CX84100
DIB_DATAN
VDD_CORE
DIB_DATAP
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
PWRCLKP
PWRCLKN
DSPKOUT
24
26
27
20
21
28
13
14
15
16
19
NC
SPEAKER CIRCUIT
DIGITAL ISOLATION
BARRIER (DIB)
102339C
102339_003