Datasheet

PIC18F97J94 FAMILY
DS30575A-page 244  2012 Microchip Technology Inc.
REGISTER 12-4: MDCARL: MODULATION CARRIER LOW CONTROL REGISTER
R/W-x R/W-x R/W-x U-0 R/W-x R/W-x R/W-x R/W-x
MDCLODIS MDCLPOL MDCLSYNC
— MDCL3
(1)
MDCL2
(1)
MDCL1
(1)
MDCL0
(1)
bit 7 bit 0
Legend:
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 MDCLODIS: Modulator Carrier Low Output Disable bit
1 = Output signal driving the peripheral output pin (selected by MDCL<3:0>) is disabled
0 = Output signal driving the peripheral output pin (selected by MDCL<3:0>) is enabled
bit 6 MDCLPOL: Modulator Carrier Low Polarity Select bit
1 = Selected Carrier Low signal is inverted
0 = Selected Carrier Low signal is not inverted
bit 5 MDCLSYNC: Modulator Carrier Low Synchronization Enable bit
1 = Modulator waits for a falling edge on the Carrier Low time signal before allowing a switch to the
Carrier High time
0 = Modulator output is not synchronized to the Carrier Low time signal
(1)
bit 4 Unimplemented: Read as ‘0’
bit 3-0 MDCL<3:0>: Modulator Data Carrier Low Selection bits
(1)
1111 = Reference Clock Output Module 2 (REFO2) signal
1110 = System clock
1101 = CCP10 output (PWM Output mode only)
1100 = CCP9 output (PWM Output mode only)
1011 = CCP8 output (PWM Output mode only)
1010 = CCP7 output (PWM Output mode only)
1001 = CCP6 output (PWM Output mode only)
1000 = CCP5 output (PWM Output mode only)
0111 = CCP4 output (PWM Output mode only)
0110 = ECCP3 output (PWM Output mode only)
0101 = ECCP2 output (PWM Output mode only)
0100 = ECCP1 output (PWM Output mode only)
0011 = Reference Clock Output Module 1 (REFO1) signal
0010 = MDCIN2 pin
0001 = MDCIN1 pin
0000 = No carrier input (tied to ground)
Note 1: Narrowed carrier pulse widths or spurs may occur in the signal stream during transitions.