参数资料
型号: EP2C20F256I6N
厂商: ALTERA CORP
元件分类: FPGA
英文描述: FPGA, 1196 CLBS, PBGA256
封装: LEAD FREE, FBGA-256
文件页数: 123/168页
文件大小: 2206K
代理商: EP2C20F256I6N
2–46
Altera Corporation
Cyclone II Device Handbook, Volume 1
February 2007
I/O Structure & Features
Figure 2–26. Cyclone II Device DQ & DQS Groups in ×8/×9 Mode
(1)
Each DQ group consists of a DQS pin, DM pin, and up to nine DQ pins.
(2)
This is an idealized pin layout. For actual pin layout, refer to the pin table.
Cyclone II devices support the data strobe or read clock signal (DQS)
used in DDR and DDR2 SDRAM. Cyclone II devices can use either
bidirectional data strobes or unidirectional read clocks. The dedicated
external memory interface in Cyclone II devices also includes
programmable delay circuitry that can shift the incoming DQS signals to
center align the DQS signals within the data window.
The DQS signal is usually associated with a group of data (DQ) pins. The
phase-shifted DQS signals drive the global clock network, which is used
to clock the DQ signals on internal LE registers.
Table 2–15 shows the number of DQ pin groups per device.
DQ Pins
DQS Pin
DM Pin
DQ Pins
(2)
Table 2–15. Cyclone II DQS & DQ Bus Mode Support (Part 1 of 2)
Device
Package
Number of ×8
Groups
Number of ×9
Groups (5), (6)
Number of ×16
Groups
Number of ×18
Groups (5), (6)
EP2C5
144-pin TQFP (2)
3
300
208-pin PQFP
7 (3)
433
EP2C8
144-pin TQFP (2)
3
300
208-pin PQFP
7 (3)
433
256-pin FineLine BGA
8 (3)
444
EP2C15
256-pin FineLine BGA
8
4
484-pin FineLine BGA
16 (4)
888
EP2C20
256-pin FineLine BGA
8
4
484-pin FineLine BGA
16 (4)
888
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相关代理商/技术参数
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EP2C20F256I8 功能描述:FPGA - 现场可编程门阵列 FPGA - Cyclone II 1172 LABs 152 IOs 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
EP2C20F256I8GA 制造商:Altera Corporation 功能描述:
EP2C20F256I8N 功能描述:FPGA - 现场可编程门阵列 FPGA - Cyclone II 1172 LABs 152 IOs 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
EP2C20F484C6 功能描述:FPGA - 现场可编程门阵列 FPGA - Cyclone II 1172 LABs 315 IOs 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
EP2C20F484C6N 功能描述:FPGA - 现场可编程门阵列 FPGA - Cyclone II 1172 LABs 315 IOs 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