2010-2012 Microchip Technology Inc.
DS41413C-page 201
PIC12(L)F1822/PIC16(L)F1823
REGISTER 23-2:
MDSRC: MODULATION SOURCE CONTROL REGISTER
R/W-x/u
U-0
R/W-x/u
MDMSODIS
—MDMS<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
MDMSODIS:
Modulation Source Output Disable bit
1
= Output signal driving the peripheral output pin (selected by MDMS<3:0>) is disabled
0
= Output signal driving the peripheral output pin (selected by MDMS<3:0>) is enabled
bit 6-4
Unimplemented:
Read as ‘0’
bit 3-0
MDMS<3:0>
Modulation Source Selection bits
1111
= Reserved. No channel connected.
1110
= Reserved. No channel connected.
1101
= Reserved. No channel connected.
1100
= Reserved. No channel connected.
1011
= Reserved. No channel connected.
1010
= EUSART TX output
1001
= Reserved. No channel selected.
1000
= MSSP1 SDO1 output
0111
= Comparator 2 output (PIC16(L)F1823 only. PIC12(L)F1822; Reserved, no channel connected.)
0110
= Comparator 1 output
0101
= Reserved. No channel connected.
0100
= Reserved. No channel connected.
0011
= Reserved. No channel connected.
0010
= CCP1 output (PWM Output mode only)
0001
= MDMIN port pin
0000
= MDBIT bit of MDCON register is modulation source
Note 1:
Narrowed carrier pulse widths or spurs may occur in the signal stream if the carrier is not synchronized.
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