參數(shù)資料
型號: PXA270
廠商: Intel Corp.
英文描述: Electrical, Mechanical, and Thermal Specification
中文描述: 電氣,機(jī)械和熱規(guī)格
文件頁數(shù): 80/126頁
文件大?。?/td> 1563K
代理商: PXA270
6-16
Electrical, Mechanical, and Thermal Specification
Intel PXA270 Processor
AC Timing Specifications
Figure 6-8. SDRAM 4-Beat Read/4-Beat Write, Different Banks Timing
read(0)
pre(1)
nop
act(1)
nop
write(1)
nop
col
bank
row
col
rd0_0
rd0_1
rd0_2
rd0_3
wd1_0
wd1_1 wd1_2
wd1_3
0b0000
0
1
2
3
1. MDCNFG[DTC] = 0b00 (CL = 2, tRP = 2 clk, tRCD = 1 clk), MDCNFG[STACK] = 0b00
2. See the SDRAM timing diagram.
mask data bytes
SDCLK<1>
SDCKE<1>
command
nSDCS<0>
nSDCS<1>
nSDRAS
nSDCAS
MA<24:10>
nWE
MD<31:0> (read)
MD<31:0> (write)
DQM<3:0>
RDnWR
NOTES:
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