CX86500 SCXV.xx Modem Data Sheet
3.2.2
CX86500 Modem 38-Pin TSSOP with Serial Interface Pin Assignments and Signal
Definitions
CX86500 Modem 38-pin TSSOP hardware interface signals are shown by major
interface in Figure 3-3 are shown by pin number in Figure 3-4, and are listed by pin
number in Table 3-3.
CX86500 Modem hardware interface signals are defined in Table 3-4.
Figure 3-3. CX86500 Modem 38-Pin TSSOP with Serial Interface Hardware Signals
28.224 OR 27.000 MHZ
CRYSTAL OR CLOCK OSCILLATOR
3
4
XTLI
XTLO
PWRCLKP
PWRCLKN
34
35
25
DIB_DATAP
DIB_DATAN
26
DSPKOUT
36
7
6
TXD#
NVMDATA
NVMCLK/PARIF
29
13
SERIAL HOST
INTERFACE
FREQUENCY SELECT
CIRCUIT
RESET CIRCUIT
+3.3V
240K
16
23
17
15
27
8
12
22
RXD#
CTS#
RI#
DTR#
RTS#
DSR#
RXCLK#
CX86500
TXCLK#
Modem
RLSD#/CLKSEL#
VDD_CORE
VDD
VDD
20
38-Pin TSSOP
SCLKSEL#
Serial
VDD
5 RESET#
Interface
GND
GND
31 LPO
GND
GND
32
9
10
30
1
14
33
38
NC
NC
2
37
RESERVED
11
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
18
19
21
28
24
DIGITAL ISOLATION
BARRIER (DIB)
SPEAKER CIRCUIT
SERIAL EEPROM
10K
+3.3V
NC
102287_004
102287F
Conexant
3-7