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參數(shù)資料
| 型號(hào)： | STPCELITE |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | X86 Core General Purpose PC Compatible System - on - Chip |
| 中文描述： | x86內(nèi)核兼容的通用計(jì)算機(jī)系統(tǒng)-關(guān)于-芯片 |
| 文件頁(yè)數(shù)： | 62/87頁(yè) |
| 文件大小： | 1356K |
| 代理商： | STPCELITE |
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DESIGN GUIDELINES
62/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Release 1.3 - January 29, 2002
6.3.3. SDRAM
The STPC provides all the signals for SDRAM
control. Up to 128 MBytes of main memory are
supported. All Banks must be 64 bits wide. Up to 4
memory banks are available when using 16Mbit
devices. Only up to 2 banks can be connected
when using 64Mbit and 128Mbit components due
to the reallocation of CS2# and CS3# signals. This
is described in
Table 6-4
and
Table 6-5
.
Graphics memory resides at the beginning of
Bank 0. Host memory begins at the top of graphics
memory and extends to the top of populated
SDRAM. Bank 0 must always be populated.
Figure 6-4
,
Figure 6-5
and
Figure 6-6
show some
typical implementations.
The purpose of the serial resistors is to reduce
signal oscillation and EMI by filtering line
reflections. The capacitance in
Figure 6-4
has a
filtering effect too, while it is used for propagation
delay compensation in the 2 other figures.
Figure 6-4. One Memory Bank with 4 Chips (16-bit)
CS0#
MA[12:0]
BA[1:0]
RAS0#
CAS0#
WE#
DQM[7:0]
MD[63:0]
MCLKI
MCLKO
DQM[7:6]
MD[63:48]
Reference Knot
DQM[5:4]
MD[47:32]
DQM[3:2]
MD[31:16]
DQM[1:0]
MD[15:0]
MCLKA
MCLKB
MCLKC
MCLKD
10pF
Length(MCLKI) = Length(MCLKy) with y = {A,B,C,D}
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| STPCE1EDBI | X86 Core General Purpose PC Compatible System - on - Chip |
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| STPCE1EEBI | X86 Core General Purpose PC Compatible System - on - Chip |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STPCH0.5MBBL | 制造商:Panduit Corp 功能描述:TX5E SHIELDED PATCH CORD 制造商:Panduit Corp 功能描述:COPPER PATCH CORD, CAT 5E, INTL GRAY F/U |
| STPCH0.5MBBU | 制造商:Panduit Corp 功能描述:TX5E SHIELDED PATCH CORD 制造商:Panduit Corp 功能描述:COPPER PATCH CORD, CAT 5E, INTL GRAY F/U |
| STPCH0.5MBGR | 制造商:Panduit Corp 功能描述:TX5E SHIELDED PATCH CORD 制造商:Panduit Corp 功能描述:COPPER PATCH CORD, CAT 5E, INTL GRAY F/U |
| STPCH0.5MBRD | 制造商:Panduit Corp 功能描述:TX5E SHIELDED PATCH CORD 制造商:Panduit Corp 功能描述:COPPER PATCH CORD, CAT 5E, INTL GRAY F/U |
| STPCH0.5MBYL | 制造商:Panduit Corp 功能描述:TX5E SHIELDED PATCH CORD 制造商:Panduit Corp 功能描述:COPPER PATCH CORD, CAT 5E, INTL GRAY F/U |
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