參數(shù)資料
型號(hào)： MC56603AGC60
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 24-BIT, 60 MHz, OTHER DSP, PBGA144
封裝： PLASTIC, BGA-144
文件頁(yè)數(shù)： 3/97頁(yè)
文件大小： 1080K
代理商： MC56603AGC60
DSP56603A
Clock and Phase Lock Loop
MOTOROLA
DSP56603A Technical Data Sheet
1-5
CLOCK AND PHASE LOCK LOOP
Table 1-4
Clock and PLL Signals
Signal
Name
Signal
Type
State
During
Reset
Signal Description
EXTAL
Input
External Clock/Crystal Input
EXTAL interfaces the internal crystal
oscillator input to an external crystal or an external clock.
XTAL
Output
Chip-
driven
Crystal Output
XTAL connects the internal crystal oscillator output
to an external crystal. If an external clock is used, leave XTAL
unconnected.
PCAP
Input
Indeter-
minate
PLL Capacitor
PCAP is an input connecting an off-chip capacitor to
the PLL filter. Connect one capacitor terminal to PCAP and the other
terminal to VCCP.
If the PLL is not used, PCAP may be tied to VCC, GND, or left
floating.
Note: Due to the designed functionality of this pin, PCAP does not meet all
ESD requirements.
CLKOUT
Output
Chip-
driven
Clock Output
CLKOUT provides an output clock synchronized to
the internal core clock phase. When the PLL is enabled, the Division
Factor (DF) equals one, and the Multiplication Factor (MF) is less than
or equal to four, CLKOUT is also synchronized to EXTAL.
When the PLL is disabled, the CLKOUT frequency is half the
frequency of EXTAL.
PINIT
NMI
Input
PLL Initialize
During assertion of RESET, the value of PINIT is
written into the PLL Enable (PEN) bit of the PLL Control Register 1
(PCTL1) , determining whether the PLL is enabled or disabled. When
this input is high during RESET assertion, the PLL is enabled
following RESET deassertion.
Non-Maskable Interrupt
After RESET deassertion and during
normal instruction processing, the PINIT/NMI Schmitt-trigger input
is a negative-edge-triggered Non-Maskable Interrupt (NMI) request
internally synchronized to CLKOUT.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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