Microchip Technology DM183037 Data Sheet
PIC18F97J94 FAMILY
DS30575A-page 318
2012 Microchip Technology Inc.
REGISTER 18-1:
CCPxCON: ENHANCED CAPTURE/COMPARE/PWM x CONTROL
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PxM1
PxM0
DCxB1
DCxB0
CCPxM3
CCPxM2
CCPxM1
CCPxM0
bit 7
bit 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 7-6
PxM<1:0>: Enhanced PWM Output Configuration bits
If CCPxM<3:2> = 00, 01, 10:
xx = PxA is assigned as the capture/compare input/output; PxB, PxC and PxD are assigned as port pins
If CCPxM<3:2> = 11:
00 = Single output: PxA, PxB, PxC and PxD are controlled by steering (see
If CCPxM<3:2> = 00, 01, 10:
xx = PxA is assigned as the capture/compare input/output; PxB, PxC and PxD are assigned as port pins
If CCPxM<3:2> = 11:
00 = Single output: PxA, PxB, PxC and PxD are controlled by steering (see
)
01 = Full-bridge output forward: PxD is modulated; PxA is active; PxB, PxC are inactive
10 = Half-bridge output: PxA, PxB are modulated with dead-band control; PxC and PxD are
10 = Half-bridge output: PxA, PxB are modulated with dead-band control; PxC and PxD are
assigned as port pins
11 = Full-bridge output reverse: PxB is modulated; PxC is active; PxA and PxD are inactive
bit 5-4
DCxB<1:0>: PWM Duty Cycle bit
Capture mode:
Unused.
Compare mode:
Unused.
PWM mode:
These bits are the two LSbs of the 10-bit PWM duty cycle. The eight MSbs of the duty cycle are found
in CCPRxL.
Capture mode:
Unused.
Compare mode:
Unused.
PWM mode:
These bits are the two LSbs of the 10-bit PWM duty cycle. The eight MSbs of the duty cycle are found
in CCPRxL.
bit 3-0
CCPxM<3:0>: CCPx Mode Select bits
0000 = Capture/Compare/PWM off (resets ECCPx module)
0001 = Reserved
0010 = Compare mode: Toggle output on match
0011 = Reserved
0100 = Capture mode: Every falling edge
0101 = Capture mode: Every rising edge
0110 = Capture mode: Every fourth rising edge
0111 = Capture mode: Every 16
0000 = Capture/Compare/PWM off (resets ECCPx module)
0001 = Reserved
0010 = Compare mode: Toggle output on match
0011 = Reserved
0100 = Capture mode: Every falling edge
0101 = Capture mode: Every rising edge
0110 = Capture mode: Every fourth rising edge
0111 = Capture mode: Every 16
th
rising edge
1000 = Compare mode: Initialize ECCPx pin low, set output on compare match (set CCPxIF)
1001 = Compare mode: Initialize ECCPx pin high, clear output on compare match (set CCPxIF)
1010 = Compare mode: Generate software interrupt only, ECCPx pin reverts to I/O state
1011 = Compare mode: Trigger special event (ECCPx resets TMR1 or TMR3, starts A/D conversion,
1001 = Compare mode: Initialize ECCPx pin high, clear output on compare match (set CCPxIF)
1010 = Compare mode: Generate software interrupt only, ECCPx pin reverts to I/O state
1011 = Compare mode: Trigger special event (ECCPx resets TMR1 or TMR3, starts A/D conversion,
sets CCPxIF bit)
1100 = PWM mode: PxA and PxC are active-high; PxB and PxD are active-high
1101 = PWM mode: PxA and PxC are active-high; PxB and PxD are active-low
1110 = PWM mode: PxA and PxC are active-low; PxB and PxD are active-high
1111 = PWM mode: PxA and PxC are active-low; PxB and PxD are active-low
1101 = PWM mode: PxA and PxC are active-high; PxB and PxD are active-low
1110 = PWM mode: PxA and PxC are active-low; PxB and PxD are active-high
1111 = PWM mode: PxA and PxC are active-low; PxB and PxD are active-low