Microchip Technology TDGL019 Data Sheet
© 2011-2014 Microchip Technology Inc.
DS60001168F-page 209
PIC32MX1XX/2XX
REGISTER 21-4:
AD1CHS: ADC INPUT SELECT REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NB
—
—
—
CH0SB<3:0>
23:16
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NA
—
—
—
CH0SA<3:0>
15:8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
7:0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
Legend:
R = Readable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 31
CH0NB:
Negative Input Select bit for Sample B
1
= Channel 0 negative input is AN1
0
= Channel 0 negative input is V
REFL
bit 30-28
Unimplemented:
Read as ‘0’
bit 27-24
CH0SB<3:0>:
Positive Input Select bits for Sample B
1111
= Channel 0 positive input is Open
(1)
1110
= Channel 0 positive input is IV
REF(2)
1101
= Channel 0 positive input is CTMU temperature sensor (CTMUT)
(3)
1100
= Channel 0 positive input is AN12
(4)
•
•
•
•
•
0001
= Channel 0 positive input is AN1
0000
= Channel 0 positive input is AN0
bit 23
CH0NA:
Negative Input Select bit for Sample A Multiplexer Setting
(2)
1
= Channel 0 negative input is AN1
0
= Channel 0 negative input is V
REFL
bit 22-20
Unimplemented:
Read as ‘0’
bit 19-16
CH0SA<3:0>:
Positive Input Select bits for Sample A Multiplexer Setting
1111
= Channel 0 positive input is Open
(1)
1110
= Channel 0 positive input is IV
REF(2)
1101
= Channel 0 positive input is CTMU temperature (CTMUT)
(3)
1100
= Channel 0 positive input is AN12
(4)
•
•
•
•
•
0001
= Channel 0 positive input is AN1
0000
= Channel 0 positive input is AN0
bit 15-0
Unimplemented:
Read as ‘0’
Note 1:
This selection is only used with CTMU capacitive and time measurement.
2:
3:
4:
AN12 is only available on 44-pin devices. AN6-AN8 are not available on 28-pin devices.