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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： 2/92页
文件大小： 1701K
代理商： LFXP2-17E-7F484C
2-7
Architecture
Lattice Semiconductor
LatticeXP2 Family Data Sheet
Figure 2-4. General Purpose PLL (GPLL) Diagram
Table 2-4 provides a description of the signals in the GPLL blocks.
Table 2-4. GPLL Block Signal Descriptions
Clock Dividers
LatticeXP2 devices have two clock dividers, one on the left side and one on the right side of the device. These are
intended to generate a slower-speed system clock from a high-speed edge clock. The block operates in a ÷2, ÷4 or
÷8 mode and maintains a known phase relationship between the divided down clock and the high-speed clock
based on the release of its reset signal. The clock dividers can be fed from the CLKOP output from the GPLLs or
from the Edge Clocks (ECLK). The clock divider outputs serve as primary clock sources and feed into the clock dis-
tribution network. The Reset (RST) control signal resets the input and forces all outputs to low. The RELEASE sig-
nal releases outputs to the input clock. For further information on clock dividers, please see TN1126, LatticeXP2
sysCLOCK PLL Design and Usage Guide. Figure 2-5 shows the clock divider connections.
Signal
I/O
Description
CLKI
I
Clock input from external pin or routing
CLKFB
I
PLL feedback input from CLKOP (PLL internal), from clock net (CLKOP) or from a user clock
(PIN or logic)
RST
I
“1” to reset PLL counters, VCO, charge pumps and M-dividers
RSTK
I
“1” to reset K-divider
DPHASE [3:0]
I
DPA Phase Adjust input
DDDUTY [3:0]
I
DPA Duty Cycle Select input
WRDEL
I
DPA Fine Delay Adjust input
CLKOS
O
PLL output clock to clock tree (phase shifted/duty cycle changed)
CLKOP
O
PLL output clock to clock tree (no phase shift)
CLKOK
O
PLL output to clock tree through secondary clock divider
CLKOK2
O
PLL output to clock tree (CLKOP divided by 3)
LOCK
O
“1” indicates PLL LOCK to CLKI
CLKFB
Divider
RST
CLKFB
CLKI
LOCK
CLKOP
CLKOS
RSTK
DPHASE
Internal Feedback
DDUTY
WRDEL
CLKOK2
CLKOK
CLKI
Divider
PFD
VCO/
LOOP FILTER
CLKOP
Divider
Phase/
Duty Cycle/
Duty Trim
CLKOK
Divider
Lock
Detect
3
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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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