參數(shù)資料
型號(hào): ADSP-BF548MBBCZ-5M
廠商: ANALOG DEVICES INC
元件分類(lèi): 數(shù)字信號(hào)處理
英文描述: 533 MHz Blackfin Embedded Processor: ADSP-BF548MBBCZ-5M Temp Range: –40°C to +85°C Package: 400-Ball CSP_BGA BC-400-1
中文描述: 16-BIT, 50 MHz, OTHER DSP, PBGA400
封裝: 17 X 17 MM, ROHS COMPLIANT, CSBGA-400
文件頁(yè)數(shù): 44/100頁(yè)
文件大?。?/td> 3095K
代理商: ADSP-BF548MBBCZ-5M
Rev. D
|
Page 48 of 100
|
May 2011
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
DDR SDRAM/Mobile DDR SDRAM Timing
SDRAM/mobile DDR SDRAM read cycle timing.
Table 32. DDR SDRAM/Mobile DDR SDRAM Read Cycle Timing
DDR SDRAM
Mobile DDR SDRAM
Parameter
Min
Max
Min
Max
Unit
Timing Requirements
tAC
Access Window of DQ0-15 to DCK0-1
–1.25
+1.25
0.0
6.00
ns
tDQSCK
Access Window of DQS0-1 to DCK0-1
–1.25
+1.25
0.0
6.00
ns
tDQSQ
DQS0-1 to DQ0-15 Skew, DQS0-1 to Last
DQ0-15 Valid
0.90
0.85
ns
tQH
DQ0-15 to DQS0-1 Hold, DQS0-1 to First
DQ0-15 to Go Invalid
tCK/2 – 1.25
1
tCK/2 – 1.75
2
tCK/2 – 1.25
ns
tRPRE
DQS0-1 Read Preamble
0.9
1.1
0.9
1.1
tCK
tRPST
DQS0-1 Read Postamble
0.4
0.6
0.4
0.6
tCK
1 For 7.50 ns
≤ t
CK < 10 ns.
2 For t
CK ≥ 10 ns.
Figure 18. DDR SDRAM Controller Read Cycle Timing
Figure 19. Mobile DDR SDRAM Controller Read Cycle Timing
DCK0-1
DQS0-1
tDQSCK
tAC
tRPRE
tDQSQ
tQH
tRPST
DQ0-15
Dn
Dn+1
Dn+2
Dn+3
DCK0-1
DQS0-1
tDQSCK
tAC
tDQSQ
DQ0-15
Dn
Dn+1
Dn+2
Dn+3
tRPRE
tRPST
tQH
相關(guān)PDF資料
PDF描述
ADSP-BF548BBCZ-5A 533 MHz Blackfin Embedded Processor: ADSP-BF548BBCZ-5A Temp Range: &#150;40&#176;C to +85&#176;C Package: 400-Ball CSP_BGA BC-400-1
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ADSP-TS203SABPZ050 500 MHz TigerSHARC Processor with 4 Mbit on-chip embedded DRAM; Package: 576 ball SBGA; No of Pins: 576; Temperature Range: Ind
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