SI3230 SILABS [Silicon Laboratories], SI3230 Datasheet - Page 75

• Manufacturer Part Number: SI3230
• Manufacturer: SILABS [Silicon Laboratories]

Register 72. On-Hook Line Voltage
Reset settings = 0010_0000
Register 73. Common Mode Voltage
Reset settings = 0000_0010
Name
Name
Type
Type
Bit
5:0
Bit
7:6
5:0
Bit
7
6
Bit
Reserved
Reserved
VOC[5:0]
VCM[5:0]
Name
VSGN
Name
D7
D7
VSGN
R/W
D6
D6
Read returns zero.
On-Hook Line Voltage.
The value written to this bit sets the on-hook line voltage polarity (V
0 = V
1 = V
On-Hook Line Voltage.
The value written to this register sets the on-hook line voltage (V
be set between 0 V (0x00) and 94.5 V (0x3F) in 1.5 V steps. Default value = 48 V.
Read returns zero.
Common Mode Voltage.
The value written to this register sets V
mission states and V
The value may be set between 0 V (0x00) and –94.5 V (0x3F) in 1.5 V steps. Default
value = –3 V.
TIP
TIP
–V
–V
RING
RING
D5
D5
is positive
is negative
RING
Preliminary Rev. 0.96
D4
D4
for reverse active and reverse on-hook transmission states.
D3
D3
VCM[5:0]
VOC[5:0]
TIP
R/W
Function
R/W
Function
for forward active and forward on-hook trans-
D2
D2
D1
D1
TIP
TIP
–V
D0
D0
–V
RING
RING
Si3230
). Value may
).
75