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參數資料
型號: ADSP-21364
廠商: Analog Devices, Inc.
元件分類: 數字信號處理
英文描述: SHARC Processor
中文描述: SHARC處理器
文件頁數: 27/52頁
文件大?。?/td> 853K
代理商: ADSP-21364
ADSP-21364
Preliminary Technical Data
Rev. PrB
|
Page 27 of 52
|
September 2004
Memory Write—Parallel Port
Use these specifications for asynchronous interfacing to memo-
ries (and memory-mapped peripherals) when the
ADSP-21364 is accessing external memory space.
Table 22. 8-bit Memory Write Cycle
Parameter
Switching Characteristics:
t
ALEW
t
ADAS
1
t
ALERW
t
RWALE
t
WRH
t
ADAH
1
t
WW
t
ADWL
t
ADWH
t
DWS
t
DWH
t
DAWH
D = (Data Cycle Duration = the value set by the PPDUR bits (5–1) in the PPCTL register) × t
PCLK
H = t
PCLK
(if a hold cycle is specified, else H = 0)
F = 7 x t
PCLK
(if FLASH_MODE is set else F = 0)
1
On reset, ALE is an active high cycle. However, it can be configured by software to be active low.
Min
Max
Unit
ALE Pulse Width
Address/Data 15–0 Setup Before ALE Deasserted
ALE Deasserted to Read/Write Asserted
Write Deasserted to ALE Asserted
Delay Between WR Rising Edge to next WR Falling Edge
Address/Data 15–0 Hold After ALE Deasserted
WR Pulse Width
Address/Data 15–8 to WR Low
Address/Data 15–8 Hold After WR High
Address/Data 7–0 Setup Before WR High
Address/Data 7–0 Hold After WR High
Address/Data to WR High
2 × t
PCLK
– 2
t
PCLK
– 2.5
2 × t
PCLK
– 2
H + 0.5
F + H + t
PCLK
– 2
t
PCLK
– 0.5
D – F – 2
t
PCLK
– 1.5
H
D – F + t
PCLK
– 4
H
D – F + t
PCLK
– 4
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure 19. Write Cycle For 8-Bit Memory Timing
AD15-8
VALID
ADDRESS
VALID ADDRESS
t
ADAS
AD7-0
ALE
RD
WR
t
ADAH
t
ADWH
t
ADWL
VALID DATA
t
DAWH
t
WRH
t
RWALE
VALID
ADDRESS
VALID DATA
t
ALEW
t
ALERW
t
WW
t
DWS
t
DWH
VALID ADDRESS
相關PDF資料
PDF描述
ADSP-21364SBBC-ENG SHARC Processor
ADSP-21364SBBCZENG SHARC Processor
ADSP-21364SBSQ-ENG SHARC Processor
ADSP-21364SBSQZENG SHARC Processor
ADSP-21364SCSQ-ENG SHARC Processor
相關代理商/技術參數
參數描述
ADSP-21364BBC-1AA 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
ADSP-21364BBC-1AAZ 制造商:Analog Devices 功能描述:DSP 32BIT SHARC 333MHZ 136CSPBGA
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ADSP-21364BSQZ-1AX 制造商:Analog Devices 功能描述:333 MHZ, PROCESSOR W/ON CHIP ROM,S/PDIF - Trays
ADSP-21364BSWZ-1AA 功能描述:IC DSP 32BIT 333MHZ EPAD 144LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP(數字式信號處理器) 系列:SHARC® 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,FCBGA 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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