SI2404 SILABS [Silicon Laboratories], SI2404 Datasheet - Page 58

• Manufacturer Part Number: SI2404
• Description: V.90, V.34, V.32BIS, V.22BIS ISOMODEM WITH GLOBAL DAA
• Manufacturer: SILABS [Silicon Laboratories]

Si2457/34/15/04
U77 GEN2
Reset settings = 0x401E
58
15:12
Name
Type
Bit
8:0
10
Bit
11
9
Reserved Read returns zero.
OHT[8:0]
D15
IST[3:0]
Name
AOC
HOI
D14
IST[3:0]
R/W
Intrusion Settling Time (250 ms units).
Delay between when the ISOmodem goes off-hook and the off-hook intrusion algorithm
begins. Default is 1 s.
Hang-Up On Intrusion.
0 = ISOmodem will not automatically hang up when an off-hook PPD interrupt occurs.
1 = ISOmodem automatically hangs up on a PPD interrupt. If %Vn commands are set, HOI
also causes the “LINE IN USE” result code upon PPD interrupt.
Auto Overcurrent.
0 = Disable.
1 = Enable.
Note: AOC may falsely detect an overcurrent condition in the presence of line reversals or other
Off-Hook Time (1 ms units).
Time before LVCS is checked for overcurrent condition after going off-hook (30 ms default).
D13
transients. Therefore, this feature should not be used in applications or locations (such as
Japan) where line reversals are common or may be expected.
D12
R/W
D11
HOI
D10
AOC
R/W
D9
Rev. 1.0
D8
Function
D7
D6
D5
OHT[8:0]
R/W
D4
D3
D2
D1
D0