目录
锁相环（ PLL）的..................................................................................................................
时钟延迟控制.......................................................................................................................
DQS后记...............................................................................................................................
DDR输入寄存器......................................................................................................................
DDR输出寄存器...................................................................................................................
双向DDR寄存器.........................................................................................................
结论............................................................................................................................................
文档修订历史记录...............................................................................................................
9–15
9–15
9–16
9–18
9–21
9–22
第四节。 I / O标准
修订历史.................................................................................................................................... 9-1
第10章可选I / O标准的Cyclone II器件
介绍.......................................................................................................................................... 10-1
支持的I / O标准................................................................................................................... 10-1
3.3 -V LVTTL （ EIA / JEDEC标准JESD8 -B ） ..................................... ..................................... 10-3
3.3 -V LVCMOS （ EIA / JEDEC标准JESD8 -B ） ..................................... ................................ 10-4
3.3 -V （ PCI特别兴趣小组[ SIG ] PCI本地总线规范修订版3.0 ） ............. 10-4
3.3 -V PCI -X ...................................................................................................................................... 10-6
易于使用，低成本的PCI Express解决方案...................................... ...................................... 10-6
2.5 -V LVTTL （ EIA / JEDEC标准EIA / JESD8-5 ） ................................... .............................. 10-7
2.5 -V LVCMOS （ EIA / JEDEC标准EIA / JESD8-5 ） ................................... ......................... 10-7
SSTL - 2 I类和II （ EIA / JEDEC标准JESD8-9A ） ................................. ....................... 10-7
伪差分SSTL- 2 ........................................................................................................... 10-8
1.8 -V LVTTL （ EIA / JEDEC标准EIA / JESD8-7 ） ................................... .............................. 10-9
1.8 -V LVCMOS （ EIA / JEDEC标准EIA / JESD8-7 ） ................................... ....................... 10-10
SSTL - 18 I类和II .................................................................................................................. 10-10
1.8 -V HSTL I类和II ............................................................................................................ 10-11
伪差分SSTL - 18一类和差分SSTL - 18 II类............................... 10-12
1.8 -V伪差分HSTL I类和II ....................................... ................................. 10-13
1.5 -V LVCMOS （ EIA / JEDEC标准JESD8-11 ） ..................................... ............................. 10-14
1.5 -V HSTL I类和II ............................................................................................................ 10-14
1.5 -V伪差分HSTL I类和II ....................................... ................................. 10-15
LVDS ， RSDS和迷你LVDS ..................................................................................................... 10-16
差分LVPECL .................................................................................................................... 10-17
的Cyclone II I / O组........................................................................................................................ 10-18
可编程电流驱动强度.............................................. ............................................ 10-24
电压参考I / O标准终止.......................................... ............................ 10-26
差分I / O标准终止............................................ ........................................ 10-26
I / O驱动程序阻抗匹配（R
键盘布局和DC指引............................................. .................................................. .. 10-27
差分管脚布局指南.............................................. ....................................... 10-28
V
REF
键盘布局原则............................................... .................................................. 10-29
DC指南............................................................................................................................... 10-32
5.0 -V设备兼容性.............................................................................................................. 10-34
Altera公司。
Cyclone II器件手册，卷1
ALTERA [ ALTERA CORPORATION ]
