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DSP56303 Scheda tecnica(PDF) 257 Page - Freescale Semiconductor, Inc

Il numero della parte DSP56303
Spiegazioni elettronici  DSP56303 USER?셎 MANUAL
PDF  292 Pages
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56303 Scheda tecnica(HTML) 257 Page - Freescale Semiconductor, Inc

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Programming Sheets
DSP56303 User’s Manual, Rev. 2
Freescale Semiconductor
B-13
Figure B-4. Phase-Locked Loop Control Register (PCTL)
Application:
Date:
Programmer:
Sheet 1 of 1
PLL
15 14 13 12 11 10
987
6543
210
MF7
MF5
MF4
MF3
MF2
MF1 MF0
19 18 17 16
23 22 21 20
PEN
COD
PD1
PD3
MF6
PD2
XTLD XTLR DF2
DF1
DF0 MF11
PD0
PSTP
MF10 MF9
MF8
PLL Control Register (PCTL)
X:$FFFFFD Read/Write
Reset = $000000
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
Multiplication Factor MF
$000
$001
$002
•
•
•
$FFF
$FFF
1
2
3
•
•
•
4095
4096
PSTP and PEN Relationship
PSTP
PEN
Operation During STOP
PLL
Oscillator
0
1
Disabled
Disabled
1
0
Disabled
Enabled
1
1
Enabled
Enabled
Division Factor Bits (DF0–DF2)
DF2–DF0
Division Factor DF
$0
$1
$2
•
•
•
$7
20
21
22
•
•
•
27



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