SI3015-F-FS View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

SI3015-F-FS

V.22BIS ISOMODEM® CHIPSET WITH ERROR CORRECTION

Silicon Laboratories 

Si2403

Table 13. S-Register Descriptions (Continued)

Definition

S-Register

(Decimal)

Function

30

Disconnect Activity Timer—Sets the length of time that

the modem stays online before disconnecting with no

activity on the serial port, parallel port, or telephone

line (Ring, hookswitch flash, or caller ID). This feature

is disabled if set to 0.

38

Hang Up Delay Time—Maximum delay between

receipt of ATH0 command and hang up. If time out

occurs before all data can be sent, the NO CARRIER

(3) result code is sent (operates in V.42 mode only).

“OK” response is sent if all data is transmitted before

timeout. S38 = 255 disables timeout and modem dis-

connects only if data is successfully sent or carrier is

lost.

40

Data Pattern - Data pattern generated during &T4 and

&T5 transmit tests.

0 – All spaces (0s)

1 – All marks (1s)

2 – Random data

42

Blacklisting - The Si2403 will not dial the same number

more than three times in three minutes. An attempt to

dial a fourth time within three minutes will result in a

“BLACKLISTED” result code. If the blacklist memory is

full, any dial to a new number will result in a “BLACK-

LIST FULL” result code. Numbers are added to the

blacklist only if the modem connection fails. The %B

command will list the numbers on the blacklists.

0: disabled

1: enabled

43

Dial Attempts to Blacklist.

When blacklisting is enabled with S42, this value con-

trols the number of dial attempts that will result in a

number being blacklisted.

44

Blacklist Timer.

Period during which blacklisting is active

50

Minimum On-Hook Time—Modem will remain on-hook

for S50 seconds. Any attempt to go off-hook will be

delayed until this timer expires.

51

Number to start checking for an outside line on a PBX.

Default

(Decimal)

0

20

0

0 (disabled)

4

180

3

1

Range

0–255

0–255

0–2

0–1

0–4

0–255

0–255

0–9

Units

minutes

seconds

—

—

—

seconds

seconds

—

34

Rev. 1.2

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