Microchip Technology MA330018 Data Sheet
dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
DS70291G-page 152
© 2007-2012 Microchip Technology Inc.
REGISTER 9-5:
ACLKCON: AUXILIARY CLOCK DIVISOR CONTROL REGISTER
(1)
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
SELACLK
AOSCMD<1:0>
APSTSCLR<2:0>
bit 15
bit 8
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
ASRCSEL
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
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 15-14
Unimplemented: Read as ‘0’
bit 13
SELACLK: Select Auxiliary Clock Source for Auxiliary Clock Divider
1 = Auxiliary Oscillators provides the source clock for Auxiliary Clock Divider
0 = PLL output (F
1 = Auxiliary Oscillators provides the source clock for Auxiliary Clock Divider
0 = PLL output (F
OSC
) provides the source clock for the Auxiliary Clock Divider
bit 12-11
AOSCMD<1:0>: Auxiliary Oscillator Mode
11 = EC External Clock Mode Select
10 = XT Oscillator Mode Select
01 = HS Oscillator Mode Select
00 = Auxiliary Oscillator Disabled (default)
11 = EC External Clock Mode Select
10 = XT Oscillator Mode Select
01 = HS Oscillator Mode Select
00 = Auxiliary Oscillator Disabled (default)
bit 10-8
APSTSCLR<2:0>: Auxiliary Clock Output Divider
111 = Divided by 1
110 = Divided by 2
101 = Divided by 4
100 = Divided by 8
011 = Divided by 16
010 = Divided by 32
001 = Divided by 64
000 = Divided by 256 (default)
111 = Divided by 1
110 = Divided by 2
101 = Divided by 4
100 = Divided by 8
011 = Divided by 16
010 = Divided by 32
001 = Divided by 64
000 = Divided by 256 (default)
bit 7
ASRCSEL: Select Reference Clock Source for Auxiliary Clock
1 = Primary Oscillator is the Clock Source
0 = Auxiliary Oscillator is the Clock Source
1 = Primary Oscillator is the Clock Source
0 = Auxiliary Oscillator is the Clock Source
bit 6-0
Unimplemented: Read as ‘0’
Note 1: This register is reset only on a Power-on Reset (POR).