la-isppac-powr1014a Lattice Semiconductor Corp., la-isppac-powr1014a Datasheet - Page 27

• Manufacturer Part Number: la-isppac-powr1014a
• Description: In-system Programmable Power Supply Supervisor, Reset Generator And Sequencing Controller
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Figure 5-19. ADC Interface Registers
To perform an A/D conversion, one must set the input attenuator and channel selector. Two input ranges may be
set using the attenuator, 0 - 2.048V and 0 - 6.144V. Table 5-8 shows the input attenuator settings.
Table 5-8. ADC Input Attenuator Control
The input selector may be set to monitor any one of the ten VMON inputs, the VCCA input, or the VCCINP input.
Table 5-9 shows the codes associated with each input selection.
Table 5-9. V
Writing a value to the ADC_MUX register to set the input attenuator and selector will automatically initiate a conver-
sion. When the conversion is in process, the DONE bit (ADC_VALUE_LOW.0) will be reset to 0. When the conver-
sion is complete, this bit will be set to 1. When the conversion is complete, the result may be read out of the ADC by
performing two I
mended that the I
MON
2
Address Selection Table
2
C read operations; one for ADC_VALUE_LOW, and one for ADC_VALUE_HIGH. It is recom-
(ADC_MUX.3)
C master load a second conversion command only after the completion of the current conversion
0x07 - ADC_VALUE_LOW (Read Only)
0x08 - ADC_VALUE_HIGH (Read Only)
0x09 - ADC_MUX (Read/Write)
SEL3
D11
D3
ATTEN (ADC_MUX.4)
b7
b7
b7
X
0
0
0
0
0
0
0
0
1
1
1
1
D10
D2
0
1
b6
b6
b6
X
(ADC_MUX.2)
SEL2
0
0
0
0
1
1
1
1
0
0
1
1
D1
D9
b5
b5
b5
LA-ispPAC-POWR1014/A Automotive Family Data Sheet
X
Select Word
ATTEN
(ADC_MUX.1)
D0
D8
b4
b4
b4
Resolution
SEL1
5-27
2mV
6mV
0
0
1
1
0
0
1
1
0
0
0
0
SEL3
D7
b3
b3
b3
1
(ADC_MUX.0)
SEL2
D6
b2
b2
b2
1
SEL0
0
1
0
1
0
1
0
1
0
1
0
1
Full-Scale Range
2.048 V
6.144 V
SEL1
D5
b1
b1
b1
1
Input Channel
VMON10
VCCINP
VMON1
VMON2
VMON3
VMON4
VMON5
VMON6
VMON7
VMON8
VMON9
VCCA
DONE
SEL0
D4
b0
b0
b0