Datasheet

dsPIC33EPXXXGM3XX/6XX/7XX
DS70000689D-page 220  2013-2014 Microchip Technology Inc.
14.1 Input Capture Control 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 x Stop in Idle Mode Control bit
1 = Input Capture x halts in CPU Idle mode
0 = Input Capture x continues to operate in CPU Idle mode
bit 12-10 ICTSEL<2:0>: Input Capture x Timer Select bits
111 = Peripheral clock (F
P) is the clock source of ICx
110 = Reserved
101 = Reserved
100 = T1CLK is the clock source of ICx (only the synchronous clock is supported)
011 = T5CLK is the clock source of ICx
010 = T4CLK is the clock source of ICx
001 = T2CLK is the clock source of ICx
000 = T3CLK is the clock source of 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 = Interrupts on every fourth capture event
10 = Interrupts on every third capture event
01 = Interrupts on every second capture event
00 = Interrupts on every capture event
bit 4 ICOV: Input Capture x Overflow Status Flag bit (read-only)
1 = Input Capture x buffer overflow occurred
0 = No Input Capture x buffer overflow occurred
bit 3 ICBNE: Input Capture x Buffer Not Empty Status bit (read-only)
1 = Input Capture x buffer is not empty, at least one more capture value can be read
0 = Input Capture x buffer is empty
bit 2-0 ICM<2:0>: Input Capture x Mode Select bits
111 = Input Capture x functions as an interrupt pin only in CPU Sleep and Idle modes (rising edge
detect only, all other control bits are not applicable)
110 = Unused (module 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 x module is turned off