PIC12F1822-ISLASHMF datasheet(196/398 Pages) MICROCHIP

196 / 398 page

PIC12F/LF1822/16F/LF1823

DS41413A-page 196

Preliminary

 2010 Microchip Technology Inc.

MDCARH: MODULATION HIGH CARRIER CONTROL REGISTER

R/W-x/u

U-0

R/W-x/u

MDCHODIS

MDCHPOL MDCHSYNC

—

MDCH<3:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

MDCHODIS: Modulator High Carrier Output Disable bit

1 = Output signal driving the peripheral output pin (selected by MDCH<3:0>) is disabled

0 = Output signal driving the peripheral output pin (selected by MDCH<3:0>) is enabled

bit 6

MDCHPOL: Modulator High Carrier Polarity Select bit

1 = Selected high carrier signal is inverted

0 = Selected high carrier signal is not inverted

bit 5

MDCHSYNC: Modulator High Carrier Synchronization Enable bit

1 = Modulator waits for a falling edge on the high time carrier signal before allowing a switch to the

low time carrier

0 = Modulator Output is not synchronized to the high time carrier signal(1)

bit 4

Unimplemented: Read as ‘0’

bit 3-0

MDCH<3:0> Modulator Data High Carrier Selection bits (1)

1111 = Reserved. No channel connected.

•

1000 = Reserved. No channel connected.

0111 = Reserved. No channel connected.

0110 = Reserved. No channel connected.

0101 = Reserved. No channel connected.

0100 = CCP1 output (PWM Output mode only)

0011 = Reference Clock module signal

0010 = Reserved. No channel connected.

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.

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