参数资料
型号: AT40K40LV-3EQC
厂商: ATMEL CORP
元件分类: FPGA
英文描述: FPGA, 2304 CLBS, 40000 GATES, PQFP240
封装: PLASTIC, QFP-240
文件页数: 3/67页
文件大小: 1589K
代理商: AT40K40LV-3EQC
11
AT40K/AT40KLV Series FPGA
0896C–FPGA–04/02
RAM
32 x 4 dual-ported RAM blocks are dispersed throughout the array, see Figure 7. A 4-bit
Input Data Bus connects to four horizontal local buses distributed over four sector rows
(plane 1). A 4-bit Output Data Bus connects to four horizontal local buses distributed
over four sectors in the same column. A 5-bit Output Address Bus connects to five verti-
cal express buses in the same column. Ain (input address) and Aout (output address)
alternate positions in horizontally aligned RAM blocks. For the left-most RAM blocks,
Aout is on the left and Ain is on the right. For the right-most RAM blocks, Ain is on the
left and Aout is tied off, thus it can only be configured as a single port. For single-ported
RAM, Ain is the READ/WRITE address port and Din is the (bi-directional) data port.
Right-most RAM blocks can be used only for single-ported memories. WEN and OEN
connect to the vertical express buses in the same column.
Figure 7. RAM Connections (One Ram Block)
32 x 4 RAM
CLK
Din
Ain
WEN
OEN
Dout
Aout
CLK
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