參數(shù)資料
型號: ADSP-2185NKCAZ-320
廠商: Analog Devices Inc
文件頁數(shù): 26/48頁
文件大小: 0K
描述: IC DSP 16BIT 80MHZ 144CSPBGA
標(biāo)準(zhǔn)包裝: 1
系列: ADSP-21xx
類型: 定點(diǎn)
接口: 主機(jī)接口,串行端口
時(shí)鐘速率: 80MHz
非易失內(nèi)存: 外部
芯片上RAM: 80kB
電壓 - 輸入/輸出: 1.8V,2.5V,3.3V
電壓 - 核心: 1.80V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 144-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 144-CSBGA(10x10)
包裝: 托盤
Rev. A
|
Page 32 of 48
|
August 2006
ADSP-218xN
Memory Write
Table 19. Memory Write
Parameter
Min
Max
Unit
Switching Characteristics:
tDW
Data Setup before WR High1
0.5tCK– 4 + w
ns
tDH
Data Hold after WR High
0.25tCK – 1
ns
tWP
WR Pulse Width
0.5tCK – 3 + w
ns
tWDE
WR Low to Data Enabled
0
ns
tASW
A13 – 0, xMS Setup before WR Low
2
0.25tCK – 3
ns
tDDR
Data Disable before WR or RD Low
0.25tCK – 3
ns
tCWR
CLKOUT High to WR Low
0.25tCK – 2
0.25tCK + 4
ns
tAW
A13 – 0, xMS Setup before WR Deasserted
0.75tCK – 5 + w
ns
tWRA
A13 – 0, xMS Hold after WR Deasserted
0.25tCK – 1
ns
tWWR
WR High to RD or WR Low
0.5tCK – 3
ns
1 w = wait states 3 t
CK.
2 xMS = PMS, DMS, CMS, IOMS, BMS.
Figure 30. Memory Write
CLKOUT
tWP
tAW
tCWR
tDH
tWDE
tDW
tASW
tWWR
tWRA
tDDR
DMS, PMS,
BMS, CMS,
IOMS
RD
WR
1ADDRESS LINES FOR ACCESSES ARE:
2DATA LINES FOR ACCESSES ARE:
BDMA: A13–0 (14 LSBs), D23–16 (8 MSBs)
BDMA: D15–8
I/O SPACE: A10–0
I/O SPACE: D23–8
EXTERNAL PM AND DM: A13–0
EXTERNAL DM: D23–8
EXTERNAL PM: D23–0
ADDRESS LINES1
DATA LINES2
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