FP DRAM read Fast Page read Notes: 1 If the next transfer is DMA, null periods between memory transfers can" />
參數(shù)資料
型號: NS7520B-1-I55
廠商: Digi International
文件頁數(shù): 49/68頁
文件大?。?/td> 0K
描述: IC ARM MICROPROCESSOR 177BGA
標準包裝: 160
系列: NET+ARM®
應(yīng)用: 網(wǎng)絡(luò)處理器
核心處理器: ARM7
程序存儲器類型: 外部程序存儲器
RAM 容量: 外部
接口: EBI/EMI,以太網(wǎng),DMA,SPI,UART
輸入/輸出數(shù): 16
電源電壓: 1.4 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 177-LFBGA
包裝: 托盤
供應(yīng)商設(shè)備封裝: 177-BGA(13x13)
FP DRAM timing
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49
FP DRAM read
Fast Page read
Notes:
1
If the next transfer is DMA, null periods between memory transfers can occur. Thirteen clock
pulses are required for DMA context switching.
2
Port size determines which byte enable signals are active:
8-bit port = BE3*
16-bit port = BE[3:2]
32-bit port = BE[3:0]
3
Port size determines which CAS signals are active:
8-bit port = CAS3*
16-bit port = CAS[3:2]
32-bit port = CAS[3:0]
4
The TA* and TEA*/LAST signals are for reference only.
T1
TW
T2
Note-1
T1
12
37
43
27
28
35
6
36
31
30
11
10
15
14
Note-2
Note-3
BCLK
TA* (Note-4)
TEA*/LAST (Note-4)
TA* (input)
BE[3:0]*
Non-muxed address
Muxed address
read D[31:0]1
OE*
RAS[4:0]*1
CAS[3:0]*1
PortA2/AMUX
RW*
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