参数资料
型号: OR4E041BM680-DB
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
英文描述: FPGA, 1296 CLBS, 380000 GATES, PBGA680
封装: PLASTIC, FBGA-680
文件页数: 79/151页
文件大小: 2680K
代理商: OR4E041BM680-DB
Lattice Semiconductor
33
Data Sheet
September, 2002
ORCA Series 4 FPGAs
Programmable Input/Output Cells (continued)
Table 13. Series 4 Programmable I/O Standards
Note: interfaces to DDR and ZBT memories are supported through the interface standards shown above.
The PIOs are located along the perimeter of the device. The PIO name is represented by a two-letter designation to
indicate the side of the device on which it is located followed by a number to indicate the row or column in which it is
located. The rst letter, P, designates that the cell is a PIO and not a PLC. The second letter indicates the side of the
array where the PIO is located. The four sides are left (L), right (R), top (T), and bottom (B). A number follows to
indicate the PIC row or column. The individual I/O pad is indicated by a single letter (either A, B, C, or D) placed at
the end of the PIO name. As an example, PL10A indicates a pad located on the left side of the array in the tenth
row.
Each PIC interfaces to four bond pads through four PIOs and contains the necessary routing resources to provide
an interface between I/O pads and the CIBs. Each PIC contains input buffers, output buffers, routing resources,
latches/FFs, and logic and can be congured as an input, output, or bidirectional I/O. Any PIO is capable of sup-
porting the I/O standards listed in Table 13.
The CIBs that connect to the PICs have signicant local routing resources, similar to routing in the PLCs. This new
routing increases the ability to x user pinouts prior to placement and routing of a design and still maintain routabil-
ity. The exibility provided by the routing also provides for increased signal speed due to a greater variety of optimal
signal paths.
Included in the routing interface is a fast path from the input pins to the PFU logic. This feature allows for input sig-
nals to be very quickly processed by the SLIC decoder function and used on-chip or sent back off of the FPGA.
A diagram of a single PIO is shown in Figure 22, and Table 14 provides an overview of the programmable functions
in an I/O cell.
Standard
VDDIO (V)
VREF (V)
Interface Usage
LVTTL
3.3
NA
General purpose.
LVCMOS2
2.5
NA
LVCMOS18
1.8
NA
PCI
3.3
NA
PCI.
LVDS
2.5
NA
Point to point and multi-drop backplanes, high noise immunity.
Bused-LVDS
2.5
NA
Network backplanes, high noise immunity, bus architecture
backplanes.
LVPECL
3.3
NA
Network backplanes, differential 100 MHz+ clocking, optical
transceiver, high-speed networking.
PECL
3.3
2.0
Backplanes.
GTL
3.3
0.8
Backplane or processor interface.
GTL+
3.3
1.0
HSTL-class I
1.5
0.75
High-speed SRAM and networking interfaces.
HTSL-class III and IV
1.5
0.9
STTL3-class I and II
3.3
1.5
Synchronous DRAM interface.
SSTL2-class I and II
2.5
1.25
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OR4E04-2BM416I 功能描述:FPGA - 现场可编程门阵列 10368 LUT 466 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256