Datasheet

PIC18F66K80 FAMILY
DS39977F-page 204  2010-2012 Microchip Technology Inc.
TABLE 12-1: SUMMARY OF REGISTERS ASSOCIATED WITH DATA SIGNAL MODULATOR MODE
REGISTER 12-4: MDCARL: MODULATION LOW CARRIER CONTROL REGISTER
R/W-0 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 Low Carrier Output Disable bit
1 = Output signal driving the peripheral output pin (selected by MDCL<3:0> of the MDCARL register)
is disabled
0 = Output signal driving the peripheral output pin (selected by MDCL<3:0> of the MDCARL register)
is enabled
bit 6
MDCLPOL: Modulator Low Carrier Polarity Select bit
1 = Selected low carrier signal is inverted
0 = Selected low carrier signal is not inverted
bit 5
MDCLSYNC: Modulator Low Carrier Synchronization Enable bit
1 = Modulator waits for a falling edge on the low time carrier signal before allowing a switch to the high
time carrier
0 = Modulator output is not synchronized to the low time carrier signal
(1)
bit 4 Unimplemented: Read as ‘0’
bit 3-0
MDCL<3:0> Modulator Data High Carrier Selection bits
(1)
1111-1001 = Reserved
1000 = CCP5 output (PWM Output mode only)
0111 = CCP4 output (PWM Output mode only)
0110 = CCP3 output (PWM Output mode only)
0101 = CCP2 output (PWM Output mode only)
0100 = ECCP1 output (PWM Output mode only)
0011 = Reference clock module signal
0010 = MDCIN2 port pin
0001 = MDCIN1 port pin
0000 = VSS
Note 1: Narrowed carrier pulse widths or spurs may occur in the signal stream if the carrier is not synchronized.
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MDCARH MDCHODIS MDCHPOL MDCHSYNC — MDCH3 MDCH2 MDCH1 MDCH0
MDCARL MDCLODIS MDCLPOL MDCLSYNC
— MDCL3 MDCL2 MDCL1 MDCL0
MDCON MDEN MDOE MDSLR MDOPOL MDO
— —MDBIT
MDSRC MDSODIS
— — — MDSRC3 MDSRC2 MDSRC1 MDSRC0
PMD2
— — — —MODMDECANMD CMP2MD CMP1MD
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used in the Data Signal Modulator mode.