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ATSAM9708 数据表(PDF) 16 Page - ATMEL Corporation

部件名 ATSAM9708
功能描述  Sound Synthesis
PDF  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

ATSAM9708 数据表(HTML) 16 Page - ATMEL Corporation

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ATSAM9708
1772D–DRMSD–01/04
Figure 8. SDRAM Init Sequence, DRAM = High
Note:
1. See Table 11 below.
Note:
Valid for DRAM and SDRAM unless otherwise stated.
012345
012345
0
12345
0
1
DRAxx
PRECHARGE A10 = 1
AUTO REFRESH
(TWO CYCLES)
LOAD MODE REG
DRA = 020H
CAS
RAS
REFRESH
WWE
row
col
CK_OUT
(1)
Table 11. RAS/CAS Correspondence to Physical Address(1)
Signal
Value at RAS Time
Value at CAS Time
WA0/DRA0
WA0
WA9
WA1/DRA1
WA1
WA10
WA2/DRA2
WA2
WA11
WA3/DRA3
WA3
WA12
WA4/DRA4
WA4
WA13
WA5/DRA5
WA5
WA14
WA6/DRA6
WA6
WA15
WA7/DRA7
WA7
WA16
WA8/DRA8
WA8
WA17
WA18/DRA9
WA18
WA19 (DRAM)
Don’t care (SDRAM)
WA20/DRA10
WA20
WA21 (DRAM)
High (SDRAM)
WA22/DRA11
WA22
WA23 (DRAM)
Don’t care (SDRAM)



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