參數(shù)資料
型號： DSP56858E
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： 16-bit Digital Signal Controllers
中文描述： 16位數(shù)字信號控制器
文件頁數(shù)： 30/64頁
文件大?。?/td> 956K
代理商： DSP56858E
56858 Technical Data, Rev. 6
30
Freescale Semiconductor
Figure 4-9 External Clock Timing
4.6 External Memory Interface Timing
The External Memory Interface is designed to access static memory and peripheral devices.
Figure 4-10
shows
sample timing and parameters that are detailed in
Table 4-7
.
The timing of each parameter consists of both a fixed delay portion and a clock related portion; as well as user
controlled wait states. The equation:
t = D + P * (M + W)
should be used to determine the actual time of each parameter. The terms in the above equation are defined as:
t
parameter delay time
D
fixed portion of the delay, due to on-chip path delays.
P
the period of the system clock, which determines the execution rate of the part (i.e. when the device is
operating at 120 MHz, P = 8.33 ns).
Table 4-6 PLL Timing
Operating Conditions: V
SS
= V
SSIO
= V
SSA
= 0 V, V
DD
= 1.62-1.98V, V
DDIO
= V
DDA
=
3.0–3.6V, T
A
= –40
°
to +120
°
C, C
L
≤
50pF, f
op
= 120MHz
Characteristic
Symbol
Min
Typ
Max
Unit
External reference crystal frequency for the PLL
1
1.
An externally supplied reference clock should be as free as possible from any phase jitter for the PLL to work correctly.
The PLL is optimized for 4MHz input crystal.
f
osc
2
4
4
MHz
PLL output frequency
f
clk
40
—
240
MHz
PLL stabilization time
2
2.
This is the minimum time required after the PLL setup is changed to ensure reliable operation.
t
plls
—
1
10
ms
External
Clock
V
IH
V
IL
Note: The midpoint is V
IL
+ (V
IH
– V
IL
)/2.
90%
50%
10%
90%
50%
10%
t
PW
t
PW
t
fall
t
rise
相關(guān)PDF資料
PDF描述
DSP56858FV120 16-bit Digital Signal Controllers
DSP56858FVE 16-bit Digital Signal Controllers
DSP56858VF120 16-bit Digital Signal Controllers
DSP5685XEVMUM Feature Phone Software Application Product Brief
DSP5685XUM Feature Phone Software Application Product Brief
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSP56858EVM 制造商:Freescale Semiconductor 功能描述:Microprocessor Support IC For Use With:D
DSP56858EVMUM_D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DSP56858 Evaluation Module User＇s Manual
DSP56858FV120 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 120Mhz/120MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
DSP56858FVE 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 120Mhz/120MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
DSP56858PB_D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:56858 Digital Signal Processor Product Brief
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