SI3201-X-FS View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

SI3201-X-FS

PROSLIC® PROGRAMMABLE CMOS SLIC WITH RINGING/BATTERY VOLTAGE GENERATION

Silicon Laboratories 

Si3233

is desired since the regulator output voltage has long settling time constants (on the order of tens of milliseconds)

and cannot change rapidly for TRACK = 1 mode. Therefore, the brief on-hook voltage measurement would yield

approximately the same voltage as the off-hook line voltage and would cause the terminal equipment to incorrectly

sense another off-hook terminal.

Constant I Region

VOC

ILIM

VCM

Constant V Region

RLOOP

VTIP

VBATL

TRACK=1

|VTIP - VRING|

VOC

TRACK=0

VOV

VOV

V

Figure 10. VTIP, VRING, and VBAT in the Forward Active State

VRING

VBAT

Table 24. Associated Relevant DC-DC Converter Registers

Parameter

DC-DC Converter Power-off

Control

DC-DC Converter Calibration

Enable/Status

DC-DC Converter PWM Period

DC-DC Converter Min. Off Time

High Battery Voltage—VBATH

Low Battery Voltage—VBATL

VOV

Range

n/a

Resolution Register Bit

n/a

DCOF

Location

Direct Register 14

n/a

n/a

DCCAL

Direct Register 93

0 to 15.564 us

(0 to 1.892 us) +

4 clock cycles

0 to –94.5 V

0 to –94.5 V

0 to –9 V or

0 to –13.5 V

61.035 ns

61.035 ns

DCN[7:0]

DCTOF[4:0]

Direct Register 92

Direct Register 93

1.5 V

1.5 V

1.5 V

VBATH[5:0]

VBATL[5:0]

VMIND[3:0]

VOV

Direct Register 74

Direct Register 75

Indirect Register 64

Direct Register 66

Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped

directly. An “indirect” register is one that is accessed using the indirect access registers (direct registers 28 through

31).

Preliminary Rev. 0.5

25

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