PIC24EP256GU810-I Datasheet, PDF (421/622 Pages) Electronic Film Capacitors, Inc. – 16-Bit Microcontrollers and Digital Signal Controllers with High-Speed PWM, USB and Advanced Analog

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
REGISTER 23-3: AD2CON2: ADC2 CONTROL REGISTER 2
R/W-0
R/W-0
R/W-0
U-0
U-0
VCFG<2:0>
—
—
bit 15
R/W-0
CSCNA
R/W-0
R/W-0
CHPS<1:0>
bit 8
R-0
BUFS
bit 7
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
SMPI<3:0>
BUFM
ALTS
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
bit 12-11
bit 10
bit 9-8
bit 7
bit 6-2
VCFG<2:0>: Converter Voltage Reference Configuration bits
VREFH
VREFL
000
AVDD
Avss
001 External VREF+
Avss
010
AVDD
External VREF-
011 External VREF+ External VREF-
1xx
AVDD
Avss
Unimplemented: Read as ‘0’
CSCNA: Input Scan Select bit
1 = Scans inputs for CH0+ during Sample A bit
0 = Does not scan inputs
CHPS<1:0>: Channel Select bits
When AD12B = 1, CHPS<1:0> is: U-0, Unimplemented, Read as ‘0’:
1x = Converts CH0, CH1, CH2 and CH3
01 = Converts CH0 and CH1
00 = Converts CH0
BUFS: Buffer Fill Status bit (only valid when BUFM = 1)
1 = ADC is currently filling the second half of the buffer; the user application should access data in the
first half of the buffer
0 = ADC is currently filling the first half of the buffer; the user application should access data in the
second half of the buffer
SMPI<3:0>: Increment Rate bits
When ADDMAEN = 0:
1111 = Generates interrupt after completion of every 16th sample/conversion operation
1110 = Generates interrupt after completion of every 15th sample/conversion operation
•
•
•
0001 = Generates interrupt after completion of every 2nd sample/conversion operation
0000 = Generates interrupt after completion of every sample/conversion operation
When ADDMAEN = 1:
1111 = Increments the DMA address after completion of every 16th sample/conversion operation
1110 = Increments the DMA address after completion of every 15th sample/conversion operation
•
•
•
0001 = Increments the DMA address after completion of every 2nd sample/conversion operation
0000 = Increments the DMA address after completion of every sample/conversion operation
 2009-2012 Microchip Technology Inc.
DS70616G-page 421