參數(shù)資料
型號: TMS320VC203
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: Digital Signal Processors(50ns指令周期, 空閑狀態(tài)CPU全關(guān)斷,先進的外圍,多種PLL可選)
中文描述: 數(shù)字信號處理器(50ns的指令周期,空閑狀態(tài)CPU的全關(guān)斷,先進的外圍,多種鎖相環(huán)可選)
文件頁數(shù): 46/67頁
文件大?。?/td> 1452K
代理商: TMS320VC203
TMS320C203, TMS320C209, TMS320VC203
DIGITAL SIGNAL PROCESSOR
SPRS025 – JUNE 1995
46
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
CLOCK CHARACTERISTICS AND TIMING
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PARAMETER
CLKMOD
TMS320C203 clock options
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PLL multiply by four
1
PLL multiply by two
1
0
1
internal divide-by-two clock option with external crystal
The internal oscillator is enabled by connecting a crystal across X1 and X2/CLKIN. The frequency of CLKOUT1
is one-half the crystal’s oscillating frequency. The crystal should be in either fundamental or overtone operation
and parallel resonant, with an effective series resistance of 30 ohms and a power dissipation of 1 mW; it should
be specified at a load capacitance of 20 pF. Note that overtone crystals require an additional tuned-LC circuit.
Figure 11 shows an external crystal (fundamental frequency) connected to the on-chip oscillator.
TMS320C2xx timing at V
pp
= 5 V with the PLL circuit disabled, divide-by-two mode
TEST CONDITIONS
MIN
NOM
MAX
80
57.14
40.96
UNIT
fx
Input clock frequency
TC = 0
C to 85
C
°
°
0
MHz
C1, C2 Load capacitance
10
pF
This device utilizes a fully static design and, therefore, can operate with input clock cycle time (tc(CI)) approaching infinity. The device is
characterized at frequencies approaching 0 Hz, but is tested at fclk = 6.7 MHz to meet device test time requirements.
X1
X2/CLKIN
C1
C2
Crystal
Figure 11. Internal Clock Option
A
相關(guān)PDF資料
PDF描述
TN-83 MICROWAVE NOISE TUBES & NOISE SOURCES
TN-101 CONNECTOR ACCESSORY
TN-102 MICROWAVE NOISE TUBES & NOISE SOURCES
TN-103 MICROWAVE NOISE TUBES & NOISE SOURCES
TN-104 CONNECTOR ACCESSORY
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