Getac Technology Corporation V110GD Manual De Usuario
PIC32MX1XX/2XX
DS61168C-page 216
Preliminary
© 2011 Microchip Technology Inc.
REGISTER 23-1:
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL 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
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
23:16
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
15:8
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
ON
(1)
—
—
—
—
—
—
—
7:0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
CVROE
CVRR
CVRSS
CVR<3:0>
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 31-16 Unimplemented: Read as ‘0’
bit 15
bit 15
ON:
Comparator Voltage Reference On bit
(1)
1
= Module is enabled
Setting this bit does not affect other bits in the register.
0
= Module is disabled and does not consume current.
Clearing this bit does not affect the other bits in the register.
bit 14-7
Unimplemented:
Read as ‘0’
bit 6
CVROE:
CV
REFOUT
Enable bit
1
= Voltage level is output on CV
REFOUT
pin
0
= Voltage level is disconnected from CV
REFOUT
pin
bit 5
CVRR:
CV
REF
Range Selection bit
1
= 0 to 0.67 CV
RSRC
, with CV
RSRC
/24 step size
0
= 0.25 CV
RSRC
to 0.75 CV
RSRC
, with CV
RSRC
/32 step size
bit 4
CVRSS:
CV
REF
Source Selection bit
1
= Comparator voltage reference source, CV
RSRC
= (V
REF
+) – (V
REF
-)
0
= Comparator voltage reference source, CV
RSRC
= AV
DD
– AV
SS
bit 3-0
CVR<3:0>:
CV
REF
Value Selection 0
≤ CVR<3:0> ≤ 15 bits
When CVRR = 1:
CV
CV
REF
= (CVR<3:0>/24)
• (CV
RSRC
)
When CVRR = 0:
CV
CV
REF
= 1/4
• (CV
RSRC
) + (CVR<3:0>/32)
• (CV
RSRC
)
Note 1:
When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.