isl6295 Intersil Corporation, isl6295 Datasheet - Page 18

• Manufacturer Part Number: isl6295
• Description: Low Voltage Fuel Gauge
• Manufacturer: Intersil Corporation

Enable
Resolution A/D Resolution selection: These 3 bits control
Reference A/D Reference selection: Selects the reference
A/D CONTROL REGISTERS
The eight A/D control registers are defined as follows:
The eight A/D control registers contain the following bits:
ADc0
ADc1
ADc2
ADc3
ADc4
ADc5
ADc6
ADc7
A/D Reg
Enable
7
Reserved
GPADctrl
OFFSctrl
6
AUXctrl
NAME
A/D Measurement enable: Setting this bit
enables the A/D measurements defined by bits
0-6.
the magnitude resolution of the A/D
measurement performed for the corresponding
A/D result register as follows:
voltage used for the pending A/D conversion.
conversion)
VPctrl
Etctrl
Resolution
Itctrl
0 = 170mV reference (for differential conversion)
1 = 340mV reference (for single-ended
Ictrl
RESOLUTION
5
0
1
2
3
4
5
6
7
Current measurement control
Internal temperature
measurement control
External temperature
measurement control
Pack voltage measurement
control
control
Offset measurement control
Auxiliary measurement control
GPAD voltage measurement
4
18
Reference
FUNCTION
8-bit conversion
9-bit conversion
10-bit conversion
11-bit conversion
12-bit conversion
13-bit conversion
14-bit conversion
15-bit conversion
3
# BIT CONVERSION
2
Select
1
Addr
4Ah
4Eh
5Eh
42h
46h
52h
56h
5Ah
0
ISL6295
Select
In order for the A/D control registers to function according to
their names, their select fields should be programmed as
follows:
A/D RESULT REGISTERS
The eight 16-bit A/D result registers are defined as follows:
ADr0
ADr1
ADr2
ADr3
ADr4 Reserved
ADr5
ADr6
ADr7
REG
Sign
A/D
15
A/D REG. #
ADc0
ADc1
ADc2
ADc3
ADc4
ADc5
ADc6
ADc7
14 13 12 11 10 9
GPADctrl GPAD Voltage measurement result
OFFSctrl Offset measurement result
AUXctrl
NAME
VPctrl
Etctrl
Itctrl
Ictrl
A/D Input selection: Selects the analog
multiplexer input for the pending A/D conversion
as follows:
Select = 0: Current (SR pin voltage)
Select = 1: Internal temperature sensor
Select = 2: External temperature sensor (NTC
Select = 3: Pack Voltage
Select = 4: Reserved
Select = 5: GPAD Voltage
Select = 6: Offset voltage
Select = 7: Offset voltage
External temperature measurement
Current measurement result
Internal temperature measurement
result
result
Pack voltage measurement result
Auxiliary measurement result
pin voltage)
GPADctrl
OFFSctrl
AUXctrl
NAME
VPctrl
Etctrl
Rsvd
Itctrl
Ictrl
Magnitude
FUNCTION
8
7
6
5
SELECT VALUE
4
November 10, 2005
3
0
1
3
6
X
2
5
2
FN9074.1
ADDR
4Ch
5Ch
1 0
40h
44h
48h
54h
58h