XE2422H Просмотр технического описания (PDF) - Unspecified

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XE2422H

Low-Cost, 2400 BPS Surface-Mount Modem

Unspecified 

XE2422H REGISTER SETTINGS

S07 Modem Protocol Selection: S07 sets the protocol and speed of the modem connection.

Protocol Data Rate Register Value

V.22bis 2400 bps

06 *

V.22

1200 bps

02

V.21

300 bps

03

Bell 212A 1200 bps

00

Bell 103 300 bps

01

S08 Interrupt Control Register: S08 is a bit-mapped register which defines the events that will

cause the /INT signal to be activated. Default = 00

Bit #

7

6

5

4

3

2

1

0

Definition

Issue Interrupt when Carrier Detect is lost

Action

0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on Ring with Wake-on-Ring selected 0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on Handset Interrupt Detection

0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on No Connect Detection

0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on Ring Detection

0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on Caller ID

0 = No Interrupt *

1= Activate Interrupt

Issue Interrupt on Over-current Detection

Reserved

0 = No Interrupt *

1= Activate Interrupt

S09 Interrupt Status Register: S09 is a bit-mapped register. The active bit indicates the cause of the

most recent interrupt. S09 is cleared when read on receipt of the :I command. Default = 00

Bit # Definition

7 Interrupt issued when Carrier Detect was lost

6 Interrupt issued when a Ring was detected with Wake-on-Ring selected

5 Interrupt issued on Handset Interrupt Detection

4 Interrupt issued on No Connect Detection

3 Interrupt issued on Ring Detection

2 Interrupt issued on Caller ID

1 Interrupt issued on Over-current Detection

0 Reserved

XECOM

(13)

XE2422H

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