Microchip Technology MA330031-2 Hoja De Datos
2011-2013 Microchip Technology Inc.
DS70000657H-page 215
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
14.2
Input Capture Registers
REGISTER 14-1:
ICxCON1: INPUT CAPTURE x CONTROL REGISTER 1
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U-0
—
—
ICSIDL
ICTSEL2
ICTSEL1
ICTSEL0
—
—
bit 15
bit 8
U-0
R/W-0
R/W-0
R/HC/HS-0
R/HC/HS-0
R/W-0
R/W-0
R/W-0
—
ICI1
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
bit 7
bit 0
Legend:
HC = Hardware Clearable bit
HS = Hardware Settable 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 15-14
Unimplemented:
Read as ‘0’
bit 13
ICSIDL:
Input Capture Stop in Idle Control bit
1
= Input capture will Halt in CPU Idle mode
0
= Input capture will continue to operate in CPU Idle mode
bit 12-10
ICTSEL<2:0>:
Input Capture Timer Select bits
111
= Peripheral clock (F
P
) is the clock source of the ICx
110
= Reserved
101
= Reserved
100
= T1CLK is the clock source of the ICx (only the synchronous clock is supported)
011
= T5CLK is the clock source of the ICx
010
= T4CLK is the clock source of the ICx
001
= T2CLK is the clock source of the ICx
000
= T3CLK is the clock source of the ICx
bit 9-7
Unimplemented:
Read as ‘0’
bit 6-5
ICI<1:0>:
Number of Captures per Interrupt Select bits (this field is not used if ICM<2:0> = 001 or 111)
11
= Interrupt on every fourth capture event
10
= Interrupt on every third capture event
01
= Interrupt on every second capture event
00
= Interrupt on every capture event
bit 4
ICOV:
Input Capture Overflow Status Flag bit (read-only)
1
= Input capture buffer overflow occurred
0
= No input capture buffer overflow occurred
bit 3
ICBNE:
Input Capture Buffer Not Empty Status bit (read-only)
1
= Input capture buffer is not empty, at least one more capture value can be read
0
= Input capture buffer is empty
bit 2-0
ICM<2:0>:
Input Capture Mode Select bits
111
= Input capture functions as interrupt pin only in CPU Sleep and Idle modes (rising edge detect
only, all other control bits are not applicable)
110
= Unused (module is disabled)
101
= Capture mode, every 16th rising edge (Prescaler Capture mode)
100
= Capture mode, every 4th rising edge (Prescaler Capture mode)
011
= Capture mode, every rising edge (Simple Capture mode)
010
= Capture mode, every falling edge (Simple Capture mode)
001
= Capture mode, every edge rising and falling (Edge Detect mode (ICI<1:0>) is not used in this mode)
000
= Input capture module is turned off