SI3232 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

SI3232

DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING

Silicon Laboratories 

Si3232

VOCLTH: VOC Delta Lower Threshold (RAM Address 2)

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

Name

VOCLTH[15:0]

Type

R/W

Reset settings = 0x00

Bit

Name

Function

15:0 VOCLTH[15:0] VOC Delta Lower Threshold.

Programs the voltage delta below the VOC value at which the VOCDELTA offset voltage

is added. This threshold is only applicable during the on-hook to off-hook transition, and

the VOCTHDH RAM location determines the threshold voltage during the off-hook to

on-hook transition. Default value is –8 V. 0 to 63.3 V range, 4.907 mV/LSB, 1.005 V

effective resolution.

VOCTRACK: Battery Tracking Open Circuit Voltage (RAM Address 10)

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

Name

VOCTRACK[15:0]

Type

R/W

Reset settings = 0x00

Bit

Name

Function

15:0 VOCTRACK[15:0] Battery Tracking Open Circuit Voltage.

Reflects the TIP-RING voltage during on-hook conditions when the battery supply has

dropped below the point where the VOC setting cannot be maintained. 0 to 63.3 V pro-

grammable range, 4.907 mV/LSB, 1.005 V effective resolution.

VOV: Overhead Voltage (RAM Address 5)

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

Name

VOV[14:0]

Type

R/W

Reset settings = 0x00

Bit

Name

Function

14:0 VOV[14:0] Overhead Voltage.

Programs the overhead voltage between the RING lead and the voltage on the VBAT

pin in normal polarity (between TIP and ground in reverse polarity). This value increases

or decreases as the battery voltage changes to maintain a constant open circuit voltage,

but maintains its user-defined setting to ensure sufficient overhead for audio transmis-

sion when the battery voltage decreases. 0 to 63.3 V programmable range, 4.907 mV/

LSB, 1.005 V effective resolution.

Preliminary Rev. 0.96

115

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