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

U77 GEN2

Bit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Name

IST[3:0]

HOI

AOC

OHT[8:0]

Type

R/W

R/W

R/W

R/W

Reset settings = 0x401E

Bit Name

Function

15:12

IST[3:0]

Intrusion Settling Time (250 ms units).

Delay between the time the Si2403 goes off-hook and the time the off-hook intrusion algo-

rithm begins. Default is 1 s.

11

HOI Hang-Up On Intrusion.

0 = Si2403 will not automatically hang up when an off-hook PPD interrupt occurs.

1 = Si2403 automatically hangs up on a PPD interrupt. If %Vn commands are set, HOI also

causes the “LINE IN USE” result code upon PPD interrupt.

10 Reserved Read returns zero.

9

AOC Overcurrent Detection.

Enable Overcurrent Detection.

0 = Disable.

1 = Enable.

Note: AOC may falsely detect an overcurrent condition in the presence of line reversals or other

transients. Therefore, this feature should not be used in applications or locations, such as

Japan, where line reversals are common or may be expected.

8:0 OHT[8:0] Off-Hook Time (1 ms units).

Time before LVCS is checked for overcurrent condition after going off-hook (30 ms default).

Rev. 1.2

51

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