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参数资料
型号： LFXP2-17E-7F484C
厂商： LATTICE SEMICONDUCTOR CORP
元件分类： FPGA
中文描述： FPGA, 420 MHz, PBGA484
封装： 23 X 23 MM, FPBGA-484
文件页数： 31/92页
文件大小： 1701K
代理商： LFXP2-17E-7F484C
2-34
Architecture
Lattice Semiconductor
LatticeXP2 Family Data Sheet
DQSXFER
LatticeXP2 devices provide a DQSXFER signal to the output buffer to assist it in data transfer to DDR memories
that require DQS strobe be shifted 90
o. This shifted DQS strobe is generated by the DQSDEL block. The
DQSXFER signal runs the span of the data bus.
sysIO Buffer
Each I/O is associated with a exible buffer referred to as a sysIO buffer. These buffers are arranged around the
periphery of the device in groups referred to as banks. The sysIO buffers allow users to implement the wide variety
of standards that are found in today’s systems including LVCMOS, SSTL, HSTL, LVDS and LVPECL.
sysIO Buffer Banks
LatticeXP2 devices have eight sysIO buffer banks for user I/Os arranged two per side. Each bank is capable of sup-
porting multiple I/O standards. Each sysIO bank has its own I/O supply voltage (VCCIO). In addition, each bank has
voltage references, VREF1 and VREF2, that allow it to be completely independent from the others. Figure 2-32
shows the eight banks and their associated supplies.
In LatticeXP2 devices, single-ended output buffers and ratioed input buffers (LVTTL, LVCMOS and PCI) are pow-
ered using VCCIO. LVTTL, LVCMOS33, LVCMOS25 and LVCMOS12 can also be set as fixed threshold inputs inde-
pendent of VCCIO.
Each bank can support up to two separate VREF voltages, VREF1 and VREF2, that set the threshold for the refer-
enced input buffers. Some dedicated I/O pins in a bank can be configured to be a reference voltage supply pin.
Each I/O is individually configurable based on the bank’s supply and reference voltages.
Figure 2-32. LatticeXP2 Banks
VREF1(2)
GND
B
ank
2
V
CCIO2
VREF2(2)
VREF1(3)
GND
Ban
k
3
V
CCIO3
VREF2(3)
V
REF1(7)
GND
Ban
k
7
V
CCIO7
V
REF2(7)
V
REF1(6)
GND
Ban
k
6
V
CCIO6
V
REF2(6)
Bank 5
Bank 4
V
REF
1
(0
)
G
ND
Bank 0
V
CCI
O0
V
REF2(0)
V
RE
F1
(1
)
GND
Bank 1
V
CC
IO1
V
REF2(1
)
LEF
T
RIGHT
TOP
V
REF1(5
)
GND
V
CCIO5
V
REF
2(5
)
V
REF1(4)
GND
V
CCIO4
V
REF
2(4)
BOTTOM
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相关代理商/技术参数
参数描述
LFXP2-17E-7F484C8W 功能描述:FPGA - 现场可编程门阵列 17KLUTs 358I/O Inst- on DSP 1.2V -7Spd 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
LFXP2-17E-7FN484C 功能描述:FPGA - 现场可编程门阵列 17KLUTs 358 I/O Inst -on DSP 1.2V -6 Spd 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
LFXP2-17E-7FN484C8W 功能描述:FPGA - 现场可编程门阵列 17KLUTs 358I/O Inst -on DSP 1.2V -7 Spd 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
LFXP2-17E-7FT256C 功能描述:FPGA - 现场可编程门阵列 17KLUTs 201 I/O Inst -on DSP 1.2V -7 Spd 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
LFXP2-17E-7FT256C8W 功能描述:FPGA - 现场可编程门阵列 17KLUTs 201 I/O Inst -on DSP 1.2V -7 Spd 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
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