Freescale Semiconductor DSP56364 Manuel d'utilisateur Page 169

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Programmer’s Reference
DSP56364 24-Bit Digital Signal Processor Users Manual, Rev. 2
Freescale Semiconductor C-13
Figure C-5. Phase Lock Loop Control Register (PCTL)
PLL
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MF7 MF5 MF4 MF3 MF2 MF1 MF0
19 18 17 1623 22 21 20
PENCODPD1PD3 MF6PD2 XTLD XTLR DF2 DF1 DF0 MF11PD0 PSTP MF10 MF9 MF8
PLL Control
Register (PCTL)
X:$FFFFFD Read/Write
Reset = $010005
XTAL Disable Bit (XTLD)
0 = Enable Xtal Oscillator
1 = EXTAL Driven From
An External Source
Clock Output Disable (COD)
0 = 50% Duty Cycle Clock
1 = Pin Held In High State
Crystal Range Bit (XTLR)
0 = External Xtal Freq > 200KHz
1 = External Xtal Freq < 200KHz
Predivision Factor
Bits (PD0 – PD3)
PD3 –
PD0
Predivision
Factor PDF
$0
$1
$2
$F
1
2
3
16
Multiplication Factor
Bits MF0 – MF11
MF11
– MF0
Multiplicatio
n Factor MF
$000
$001
$002
$FFE
$FFF
1
2
3
4095
4096
Division Factor Bits (DF0 –
DF2)
DF2 – DF0 Division Factor
DF
$0
$1
$2
$7
2
0
2
1
2
2
2
7
PSTP and PEN Relationship
PSTP PEN Operation During STOP Recovery Time
for STOP
Power Consumption
during STOP
PLL Oscillator
0 x Disabled Disabled Long Minimal
1 0 Disabled Enabled Short Lower
1 1 Enabled Enabled Short Higher
Bits XTLR and
XTLD
have no effect on
DSP56364 operation
Application:
Date:
Programmer:
Sheet 5 of 5
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