si2401 Silicon Laboratories, si2401 Datasheet - Page 62

• Manufacturer Part Number: si2401
• Description: V.22bis Isomodem With Integrated Global Daa
• Manufacturer: Silicon Laboratories

Si2401
SF0 (DAA0). DAA Low Level Functions 0
Reset settings = 0100_0000 (0x40)
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*Note: Under normal operation, the Si2401 internal microcontroller automatically sets these bits appropriately.
Bit
7:6
5:2
1:0
Name
Type
Bit
Reserved Read returns zero.
FOH[1:0]
LM[1:0]
Name
D7
FOH[1:0]
Fast Off-Hook Selection.
These bits determine the length of the off-hook counter. The default setting is 128 ms.
00 = 512 ms
01 = 128 ms
10 = 64 ms
11 = 8 ms
Line Mode.
These bits determine the line status of the Si2401.*
00 = On-hook
01 = Off-hook
10 = On-hook line monitor mode
11 = Reserved
R/W
D6
D5
Rev. 1.0
D4
Function
D3
D2
R/W
D1
LM[1:0]
R/W
D0