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參數(shù)資料
| 型號(hào)： | QL6500PB516 |
| 英文描述： | Power choke, toroid, RoHS |
| 中文描述： | 專用集成電路 |
| 文件頁(yè)數(shù)： | 4/13頁(yè) |
| 文件大?。?/td> | 165K |
| 代理商： | QL6500PB516 |
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www.quicklogic.com
2001 QuickLogic Corporation
Eclipse Family Data Sheet
2.0 RAM Modules
The Eclipse Family includes multiple dual-port 2,304-bit RAM modules for implementing RAM, ROM
and FIFO functions. Each module is user-configurable into four different block organizations. Modules
can also be cascaded horizontally to increase their effective width or vertically to increase their effective
depth as shown in Figure 3. The RAM can also be configured as a modified Harvard Architecture, similar
to those found in DSPs.
Figure 3: 2,304-bit QuickRAM Module
The number of RAM modules varies from 12 to 36 blocks within the Eclipse family, for a total of 46.1K
to 82.9k bits of RAM. Using two "mode" pins, designers can configure each module into 128 x 18 (Mode
0), 256 x 9 (Mode 1), 512 x 4 (Mode 2), or 1024 x 2 blocks (Mode 3). The blocks are also easily
cascadable to increase their effective width and/or depth. See Figure 4.
Figure 4: Cascaded RAM Modules
The RAM modules are dual-port, with completely independent READ and WRITE ports and separate
READ and WRITE clocks. The READ ports support asynchronous and synchronous operation, while
the WRITE ports support synchronous operation. Each port has 18 data lines and 10 address lines,
allowing word lengths of up to 18 bits and address spaces of up to 1024 words. Depending on the mode
selected, however, some higher order data or address lines may not be used.
MODE[1:0]
WA[9:0]
WD[17:0]
WE
WCLK
2,304-bit Module
ASYNCRD
RA[9:0]
RD[17:0]
RE
RCLK
WDATA
RDATA
RDATA
WADDR
WDATA
RADDR
RAM
Module
(2,304 bits)
RAM
Module
(2,304 bits)
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