參數(shù)資料
型號(hào)： EP20K400ERI240-1
廠商： ALTERA CORP
元件分類： PLD
英文描述： LOADABLE PLD, PQFP240
封裝： HEAT SINK, POWER, QFP-240
文件頁(yè)數(shù)： 41/65頁(yè)
文件大?。?/td> 781K
代理商： EP20K400ERI240-1
68
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
Preliminary Information
In addition, two PLLs include special circuitry to support T1/E1
conversion. The T1 telecommunications standard uses a 1.544-MHz clock,
and the E1 telecommunications standard uses a 2.048-MHz clock. These
two PLLs can convert a T1 clock to an E1 clock, or vice versa.
Clock Phase & Delay Adjustment
The APEX 20KE ClockShift feature allows the clock phase and delay to be
adjusted. The clock phase can be adjusted by 90 steps. The clock delay can
be adjusted to increase or decrease the clock delay by approximately 2 ns
with 0.5-ns resolution.
LVDS Support
Two PLLs are designed to support the LVDS interface. When using LVDS,
the I/O clock runs at a slower rate than the data transfer rate. Thus, PLLs
are used to multiply the I/O clock internally to capture the LVDS data.
For example, an I/O clock may run at 50 MHz to support
400 Mbits/second LVDS data transfer. In this example, the PLL multiplies
the incoming clock by 8 to support the high-speed data transfer. The
LVDS interface is supported by EP20K300E and larger devices.
The APEX 20KE ClockLock circuitry supports individual LOCK signals.
The LOCK signal drives high when the ClockLock circuit has locked onto
the input clock. Both signals are optional for each ClockLock circuit; when
not used, they are I/O pins.
ClockLock & ClockBoost Timing Parameters
For the ClockLock and ClockBoost circuitry to function properly, the
incoming clock must meet certain requirements. If these specifications are
not met, the circuitry may not lock onto the incoming clock, which
generates an erroneous clock within the device. The clock generated by
the ClockLock and ClockBoost circuitry must also meet certain
specifications. If the incoming clock meets these requirements during
configuration, the ClockLock and ClockBoost circuitry will lock onto the
clock during configuration. The circuit will be ready for use immediately
after configuration. Figure 31 shows the incoming and generated clock
specifications.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EP20K400FC672-1 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-1ES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FPGA
EP20K400FC672-1X 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-2 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-2ES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FPGA
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