參數(shù)資料
型號： ADSP-2105
廠商： Analog Devices, Inc.
英文描述： ADSP-2100 Family DSP Microcomputers
中文描述： 的ADSP - 2100系列DSP的微機
文件頁數(shù)： 20/64頁
文件大?。?/td> 666K
代理商： ADSP-2105
ADSP-21xx
–20–
REV. B
T E ST CONDIT IONS
Figure 14 shows voltage reference levels for ac measurements.
Figure 14. Voltage Reference Levels for AC Measurements
(Except Output Enable/Disable)
Output Disable T ime
Output pins are considered to be disabled when they have
stopped driving and started a transition from the measured
output high or low voltage to a high impedance state. T he
output disable time (t
DIS
) is the difference of t
MEASURED
and
t
DECAY
, as shown in Figure 15. T he time t
MEASURED
is the
interval from when a reference signal reaches a high or low
voltage level to when the output voltages have changed by 0.5 V
from the measured output high or low voltage.
T he decay time, t
DECAY
, is dependent on the capacitative load,
C
L
, and the current load, i
L
, on the output pin. It can be
approximated by the following equation:
t
DECAY
=
C
L
×
0.5
V
i
L
from which
t
DIS
=
t
MEASURED
–
t
DECAY
is calculated. If multiple pins (such as the data bus) are dis-
abled, the measurement value is that of the last pin to stop
driving.
Output E nable T ime
Output pins are considered to be enabled when they have made
a transition from a high-impedance state to when they start
driving. T he output enable time (t
E NA
) is the interval from
when a reference signal reaches a high or low voltage level to
when the output has reached a specified high or low trip point,
as shown in Figure 15. If multiple pins (such as the data bus)
are enabled, the measurement value is that of the first pin to
start driving.
SPECIFICATIONS (ADSP-2101/2105/2115/2161/2163)
3.0V
1.5V
0.0V
2.0V
1.5V
0.8V
INPUT
OUTPUT
Figure 15. Output Enable/Disable
TO
OUTPUT
PIN
50pF
+1.5V
I
OH
I
OL
Figure 16. Equivalent Device Loading for AC Measurements
(Except Output Enable/Disable)
2.0V
1.0V
t
ENA
REFERENCE
SIGNAL
OUTPUT
t
DECAY
V
OH
(MEASURED)
OUTPUT STOPS
DRIVING
OUTPUT STARTS
DRIVING
t
DIS
t
MEASURED
V
OL
(MEASURED)
V
OH
(MEASURED) – 0.5V
V
OL
(MEASURED) +0.5V
HIGH-IMPEDANCE STATE.
TEST CONDITIONS CAUSE
THIS VOLTAGE LEVEL TO BE
APPROXIMATELY 1.5V.
V
OH
(MEASURED)
V
OL
(MEASURED)
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相關代理商/技術參數(shù)
參數(shù)描述
ADSP-2105BP-55 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 13.824MHz 13.824MIPS 68-Pin PLCC 制造商:Rochester Electronics LLC 功能描述:- Bulk
ADSP-2105BP-55REEL 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
ADSP-2105BP-80 功能描述:IC DSP CONTROLLER 16BIT 68PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:ADSP-21xx 標準包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI，以太網(wǎng)，RS-232 時鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA，F(xiàn)CBGA 供應商設備封裝:431-FCPBGA（20x20） 包裝:托盤
ADSP-2105BP-80REEL 制造商:Analog Devices 功能描述:DSP FIX PT 16BIT 20MHZ 20MIPS - Tape and Reel
ADSP-2105BPZ-80 功能描述:IC DSP CONTROLLER 16BIT 68PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:ADSP-21xx 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA
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