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XE2422H

Low-Cost, 2400 BPS Surface-Mount Modem

Unspecified 

XE2422H REGISTER SETTINGS

S10 Escape Code Guard Timer: S10 defines the duration of the guard timer surrounding the escape

sequence. The guard time is the time preceding and following the escape sequence during which

any character received by the modem will abort the escape sequence.

Range: 00 to 7F (0 to 6.78 seconds)

Units 0.0533 Seconds

Default 13 (1 second)

S11 Handset Interrupt Differential Current Threshold: S11 sets the differential loop current

threshold for the XE2422H handset Interrupt detection algorithm. If loop current falls by the value

of S11 below the value of S12, Handset Interrupt is activated.

Range: 00 to 07 (0 to 7 milliamps)

Units 1 Milliamp

Default 04 (4 milliamps)

S12 Handset Interrupt Current Threshold: S12 sets the loop current threshold for the XE2422H

Handset Interrupt detection algorithm. If loop current falls by the value of S11 below the value of

S12, Handset Interrupt is activated.

Range: 00 to 64 (0 to 100 milliamps)

Units 1 Milliamp

Default 00 (0 milliamps)

S15 Modem Link Control Register: S15 selects modem guard tones, calling tones and data format..

Default = 04

Bit #

7

6

5

4

3

2:1

Definition

Reserved

Transmit V.25 Calling Tone

Transmit 550 Hz Guard Tone

Transmit 1800 Hz Guard Tone

Number of Stop Bits

Number of Data Bits

0 Reserved

Action

0 = Disabled *

1 = Calling Tone Active

0 = Disabled *

1= 550 Hz Guard tone Active

0 = Disabled *

1= 1800 Hz Guard tone Active

0 = 1 Stop Bit *

1 = 2 Stop Bits

00 = 6 Data Bits

01 = 7 Data Bits

10 = 8 Data Bits *

11 = 9 Data Bits

S29 Handset Interrupt Blocking Time: S29 provides a set duration for blocking the Handset

Interrupt feature to avoid false detections. This timer is activated by S82.

Range: 00 to 7F (0 to 63.5 Seconds)

Units 0.5 Seconds

Default 00 (disabled)

XECOM

(15)

XE2422H

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