Microchip Technology AC244045 Data Sheet

PIC16(L)F1825/1829

DS41440C-page 208

 2010-2012 Microchip Technology Inc.

REGISTER 23-1:

MDCON: MODULATION CONTROL REGISTER

R/W-0/0

R/W-1/1

R/W-0/0

R-0/0

U-0

R/W-0/0

MDEN

MDOE

MDSLR

MDOPOL

MDOUT

—

MDBIT

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

MDEN:

Modulator Module Enable bit

1 = Modulator module is enabled and mixing input signals
0 = Modulator module is disabled and has no output

bit 6

MDOE:

Modulator Module Pin Output Enable bit

1 = Modulator pin output enabled
0 = Modulator pin output disabled

bit 5

MDSLR:

MDOUT Pin Slew Rate Limiting bit

1 = MDOUT pin slew rate limiting enabled
0 = MDOUT pin slew rate limiting disabled

bit 4

MDOPOL:

Modulator Output Polarity Select bit

1 = Modulator output signal is inverted
0 = Modulator output signal is not inverted

bit 3

MDOUT:

Modulator Output bit

Displays the current output value of the modulator module.

(1)

bit 2-1

Unimplemented:

Read as ‘0’

bit 0

MDBIT:

Allows software to manually set modulation source input to module

(2)

1 = Modulator uses High Carrier source
0 = Modulator uses Low Carrier source

Note 1:

The modulated output frequency can be greater and asynchronous from the clock that updates this
register bit, the bit value may not be valid for higher speed modulator or carrier signals.

MDBIT must be selected as the modulation source in the MDSRC register for this operation.