si3225 Silicon Laboratories, si3225 Datasheet - Page 43

• Manufacturer Part Number: si3225
• Description: Dual Proslic Programmable Cmos Slic/codec
• Manufacturer: Silicon Laboratories

High Battery Detect Threshold
Low Battery Detect Threshold
Ringing Battery Switch (Si3220 only)
Battery Select Indicator
Battery Switching LPF
*Note: Usable range for BATHTH and BATLTH is limited to the V
Parameter
Table 23. Register and RAM Locations Used for Battery Switching
Figure 19. External Battery Switching Using the Si3220/Si3225
V
V
BLO
BHI
806 kΩ
SVBAT
Register/RAM
Mnemonic
Si3220
Si3225
RLYCON
RLYCON
BATHTH
BATLTH
BATLPF
Battery
Sense
Circuit
VBATH
Si3200/2
VBAT
VBATL
Rev. 1.3
Linefeed
Circuitry
Register/RAM
BATHTH[14:7]
BHI
BATLTH[14:7]
BATLPF[15:3]
Battery
Control
Logic
voltage.
BSEL
GPO
Bits
Si3220/25 Si3200/02
BATSEL
Battery
Control
Select
Programmable
0 to 160.173 V*
0 to 160.173 V*
BATSEL
40.2 kΩ
0 to 4000h
Range
Toggle
Toggle
Resolution
(LSB Size)
(4.907 mV)
(4.907 mV)
628 mV
628 mV
N/A
N/A
N/A
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