CX11627 View Datasheet(PDF) - Conexant Systems

Part Name

Description

Manufacturer

CX11627

AccessRunner™ ADSL-USB Modem Device Set

Conexant Systems 

AccessRunner ADSL-USB Modem Device Set Data Sheet

Table 3-3. CX20431 AFE Hardware Signal Definitions (Continued)

Signal Name

Pin

I/O

I/O Type

Signal Name/Description

NOT USED

INP_RX

3

I

Ia

Receive Input Positive. Not used. Leave open.

INM_RX

4

I

Ia

Receive Input Negative. Not used. Leave open.

NC

12, 20, 26, 28

NOTES:

I/O Types: See Table 3-15.

No Connect. These pins are not connected to internal circuitry.

Table 3-14. CX20431 AFE Input/Output Type Descriptions

I/O Type

Description

Ia

Analog input

It

Digital input, +5V tolerant, CIN = 8 pF

It/Ot4

Digital input, +5V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω

Ith

Digital input, +5V tolerant, with hysteresis, CIN = 8 pF

Itpd

Digital input, +5V tolerant, 75k Ω pull-down, CIN = 8 pF

Itpu

Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF

Itpu/Ot4 Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω

Oa

Analog Output

Otts4

Digital output, 3-State, 4 mA, ZINT =80 Ω

NOTES:

1. See DC characteristics in Table 3-15 and analog electrical characteristics in Table 3-16.

2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.

100427B

Conexant

3-21

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