參數(shù)資料
型號: TMX32C6411AGLZ
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: FIXED POINT DIGITAL SIGNAL PROCESSOR
中文描述: 定點數(shù)字信號處理器
文件頁數(shù): 58/119頁
文件大小: 1742K
代理商: TMX32C6411AGLZ
SPRS196H MARCH 2002 REVISED JULY 2004
58
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
clock PLL
Most of the internal C64x
DSP clocks are generated from a single source through the CLKIN pin. This source
clock either drives the PLL, which multiplies the source clock frequency to generate the internal CPU clock, or
bypasses the PLL to become the internal CPU clock.
To use the PLL to generate the CPU clock, the external PLL filter circuit must be properly designed. Figure 6
shows the external PLL circuitry for either x1 (PLL bypass) or other PLL multiply modes.
To minimize the clock jitter, a single clean power supply should power both the C64x
DSP device and the
external clock oscillator circuit. The minimum CLKIN rise and fall times should also be observed. For the input
clock timing requirements, see the
input and output clocks
electricals section.
Rise/fall times, duty cycles (high/low pulse durations), and the load capacitance of the external clock source
must meet the DSP requirements in this data sheet (see the
electrical characteristics over recommended
ranges of suppy voltage and operating case temperature
table and the
input and output clocks
electricals
section). Table 23 lists some examples of compatible CLKIN external clock sources:
Table 23. Compatible CLKIN External Clock Sources
COMPATIBLE PARTS FOR
EXTERNAL CLOCK SOURCES (CLKIN)
PART NUMBER
MANUFACTURER
JITO-2
Fox Electronix
Oscillators
STA series, ST4100 series
SaRonix Corporation
SG-636
Epson America
342
Corning Frequency Control
PLL
ICS525-02
MK1714
Integrated Circuit Systems
Spread Spectrum Clock Generator
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