cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 43

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

Table 3-2. CX81801 Modem Pin Signal Definitions for Parallel Interface (PARIF = High) (Continued)
102247B
VOICE# (PE1)
HS_LCS (PE4)
TESTP
XCLK
PHS2
SR4RIN
PA2
PA6
PD7
P_PX00
P_PX02
P_PX03
RESERVED (PA0)
RESERVED (PA1)
RESERVED (PA3)
RESERVED (PA4)
RESERVED (PA5)
RESERVED (PE0)
RESERVED (PE2)
RESERVED (PE5)
RESERVED (PE6)
RESERVED (GP00)
RESERVED (P_PA00)
RESERVED (P_PA04)
RESERVED (P_PA05)
RESERVED (P_PB01)
RESERVED
(P_BD2CLK)
Notes:
1. I/O Types: See Table 3-5.
2. Interface Legend:
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
DIB
EB
HB
NC
VC
RESERVED = No external connection allowed (may have internal connection).
Label
Digital Isolation Barrier
Expansion Bus
Host Bus
No internal pin connection
Voice Codec
16
19
49
121
27
32
46
41
42
43
24
26
28
29
31
14
17
21
22
52
55
54
56
51
110
45
59
Pin
O
I
I
O
O
I
O
I/O
I/O
I/O
I/O
O
O
I
I
I
O
O
I/O
O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
It/Ot2
It/Ot2
Itpu
It/Ot2
Ot2
Itk
It/Ot2
It/Ot2
It/Ot2
It/Ot8
Itpu/Ot2
Itpu/Ot2
It/Ot2
It/Ot2
Itpu/Ot2
Itpu/Ot2
It/Ot2
It/Ot8
It/Ot2
It/Ot2
It/Ot2
It/Ot2
Itpu/Ot2
Itpu/Ot2
Itk/Ot2
Itpu/Ot2
Itpu/Ot2
I/O Type
Conexant
DAA Interface
Not Used
Voice Relay Control. This output (typically active low) used to
control the normally open voice relay.
Handset Line Current Sense. LCS is an active high input that
indicates a handset off-hook status. Not required for
data/fax/voice/speakerphone operation. If not used, connect to
GND through 47 KΩ.
Test. Used for factory test only. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Reserved. Connect to +3.3V though 47 KΩ.
Not Used. Leave open.
Not Used. Leave open.
Reserved. Connect to +3.3V though 47 KΩ.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Not Used. Leave open.
Signal Name/Description
3-11