Motorola DSP56012 CENTRAL PROCESSOR, PCTL

B-18 DSP56012 User’s Manual MOTOROLA
Programming Reference
Application: Date:
Programmer: Sheet 4 of 4
CENTRAL PROCESSOR
1514131211109876543210
DF3 DF2 MF11 MF10 MF7 MF6 MF5 MF4 MF3 MF2 MF1 MF0
PLL Control
X:$FFFD Read/Write
DF1 DF0
Reset = $000002(PINIT = GND)
Register (PCTL)
19 18 17 1623 22 21 20
*
0MF8MF9PSTPPENCSRC
Multiplication Factor Bits MF0–MF11
MF11–MF0 Multiplication Factor MF
$000 1 $001 2 $002 3
•• •• ••
$FFE 4095
$FFF 4096
Stop Processing State Bit (PSTP) 0 = PLL Disabled During Stop Processing State 1 = PLL Enabled During Stop Processing State
PLL Enable Bit (PEN) 0 = Disable PLL 1 = Enable PLL
Chip Clock Source Bit (CSRC) 0 = Output from Low Power Divider 1 = Output from VCO
* = Reserved, write as 0
*
0
*
0*
0*
0
Division Factor Bits DF0–DF11
DF11–DF0 Division Factor MF
$0 20 $1 21 $2 22
•• •• ••
$E 214
$F 215
Reset = $040002(PINIT = Vcc)
PCTL
PLL Control Register (PCTL)