si2401 Silicon Laboratories, si2401 Datasheet - Page 67

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

SF8 (DAA8). DAA Low Level Functions 8
Reset settings vary with line-side vision
SF9 (DAA9). DAA Low Level Functions 9 Read Only
Reset settings = 0010_0000 (0x20)
Bit
7:4
3:2
Bit
7:4
Name
1
0
3
2
1
0
Name
Type
Type
Bit
Bit
Reserved
Reserved
Reserved
Reserved
LRV[3:0]
Name
Name
DCR
ROV
BTD
OVL
D7
D7
Line-Side Device Revision Number.
0011 = Si3010 Rev C
0100 = Si3010 Rev D
0101 = Si3010 Rev E
0110 = Si3010 Rev F
Read returns an indeterministic value.
DC Impedance Selection.
0 = 50 Ω dc termination is selected. This mode should be used for all standard
applications.
1 = 800 Ω dc termination is selected.
Do not modify.
Do not modify.
Billing Tone Detect (sticky).
0 = No billing tone detected.
1 = Billing tone detected.
Receive overload.
Same as ROV, except not sticky.
Receive Overload (sticky).
0 = No excessive level detected.
1 = Excessive input level detected.
Do not modify.
D6
D6
LRV[3:0]
R
D5
D5
Rev. 1.0
D4
D4
Function
Function
BTD
R/W
D3
D3
OVL
D2
R
D2
ROV
R/W
DCR
R/W
D1
D1
Si2401
D0
D0
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