Megafunctions/LPM
The Quartus II software offers a variety of megafunctions, including the library of parameterized modules (LPM) functions and other parameterized functions. Megafunctions are listed below by function. Functions indicated by an asterisk (*) are provided for backward compatibility only.
Arithmetic MegaWizards and Megafunctions:
Arithmetic components include accumulators, adders, multipliers, and LPM arithmetic functions.
|
MegaWizard |
Megafunction(s) |
Comments |
|
ALTACCUMULATE |
altaccumulate |
Parameterized accumulator megafunction. 参数化的寄存器模块 |
|
ALTECC |
altecc_decoder |
Error correction code (ECC) megafunction. 数据代码纠正模块 |
|
altecc_encoder |
Error correction code (ECC) megafunction. 数据代码纠正模块 |
|
|
ALTFP_ADD_SUB |
altfp_add_sub |
Floating-point adder/subtractor megafunction. 浮点、加法器/减法器模块 |
|
ALTFP_COMPARE |
altfp_compare |
Parameterized floating-point comparator megafunction. 参数化的浮点比较器模块 |
|
ALTFP_CONVERT |
altfp_convert |
Parameterized floating-point conversion megafunction. 参数化的浮点转换器模块 |
|
ALTFP_DIV |
altfp_div |
Parameterized floating-point divider megafunction. 参数化的浮点分配器模块 |
|
ALTFP_MULT |
altfp_mult |
Parameterized floating-point multiplier megafunction. 参数化的浮点乘法器模块 |
|
ALTFP_SQRT |
altfp_sqrt |
Parameterized floating-point square root megafunction. 参数化的浮点平方根模块 |
|
ALTMEMMULT |
altmemmult |
Parameterized memory multiplier megafunction. 数化的记忆乘法器模块 |
|
ALTMULT_ACCUM (MAC) |
altmult_accum |
Parameterized multiply-accumulate megafunction. 参数化的乘-累积模块 |
|
ALTMULT_ADD |
altmult_add |
Parameterized multiplier/adder megafunction. 参数化的乘法器/加法器模块 |
|
ALMULT_COMPLEX |
altmult_complex |
Parameterized complex multiplier megafunction. 参数化的综合乘法器模块 |
|
ALTSQRT |
altsqrt |
Parameterized integer square root megafunction. 参数化的整数平方根模块 |
|
LPM_ABS |
lpm_abs |
Parameterized absolute value megafunction. 参数化的绝对值模块 |
|
LPM_ADD_SUB |
lpm_add_sub |
Parameterized adder/subtractor megafunction. 参数化的加法器/减法器模块 |
|
LPM_COMPARE |
lpm_compare |
Parameterized comparator megafunction. 参数化的比较器模块 |
|
LPM_COUNTER |
lpm_counter |
Parameterized counter megafunction. 参数化的计数器模块 |
|
LPM_DIVIDE |
lpm_divide |
Parameterized divider megafunction. 参数化的分配器模块 |
|
divide* |
Parameterized divider megafunction. 参数化的分配器模块 Use the divide megafunction with mature device families. For newer device families, use the lpm_divide megafunction.
|
|
|
LPM_MULT |
lpm_mult |
Parameterized multiplier megafunction. 参数化的乘法器模块 |
|
altsquare |
Parameterized squarer megafunction. 参数化的 squarer 模块 |
|
|
PARALLEL_ADD |
parallel_add |
Parallel adder megafunction. 参数化的并联加法器模块 |
Gates MegaWizards and Megafunctions:
Gates include multiplexers and LPM gate functions.
|
MegaWizard |
Megafunction(s) |
Comments |
|
LPM_AND |
lpm_and |
Parameterized AND gate megafunction. 参数化的与门模块 |
|
LPM_BUSTRI |
lpm_bustri |
Parameterized tri-state buffer megafunction. 参数化的三态缓冲器模块 |
|
LPM_CLSHIFT |
lpm_clshift |
Parameterized combinational logic shifter or barrel shifter megafunction. 参数化的组合逻辑转换模块 |
|
LPM_CONSTANT |
lpm_constant |
Parameterized constant generator megafunction. 参数化的常数发生器模块 |
|
LPM_DECODE |
lpm_decode |
Decoder megafunction. 参数化的解码器模块 |
|
LPM_INV |
lpm_inv |
Parameterized inverter megafunction. 参数化的反相器模块 |
|
LPM_MUX |
lpm_mux |
Parameterized multiplexer megafunctions. 参数化的多路转换器模块 |
|
LPM_OR |
lpm_or |
Parameterized OR gate megafunction. 参数化的或门模块 |
|
LPM_XOR |
lpm_xor |
Parameterized XOR gate megafunction. 参数化的异或门模块 |
I/O MegaWizards and Megafunctions:
I/O components include Clock Data Recovery (CDR), phase locked loop (PLL), double data rate (DDR), gigabit transceiver block (GXB), LVDS receiver, LVDS transmitter,
PLL reconfiguration, and remote update megafunctions.
|
MegaWizard |
Megafunction(s) |
Comments |
|
ALT2GXB |
alt2gxb |
GXB megafunction. 千兆位收发器 |
|
ALT2GXB_RECONFIG |
alt2gxb_reconfig |
GXB dynamic reconfiguration megafunction. 千兆位动态配置收发器 |
|
ALTASMI_PARALLEL |
altasmi_parallel |
Active serial memory interface parallel megafunction. 并联接口的串行存储器 |
|
ALTCLKCTRL |
altclkctrl |
Clock control block megafunction. 时钟控制模块 |
|
ALTCLKLOCK |
altclklock |
Parameterized PLL megafunction. 参数化的锁相环模块 |
|
ALTDDIO_BIDIR |
altddio_bidir |
DDR bidirectional megafunction. 双倍数双向模块 |
|
ALTDDIO_IN |
altddio_in |
DDR input megafunction. 双倍数输入模块 |
|
ALTDDIO_OUT |
altddio_out |
DDR output megafunction. 双倍数输出模块 |
|
ALTDLL |
altdll |
Delay locked loop (DDL) megafunction. 锁相环模块 |
|
ALTDQ |
altdq |
Data strobe megafunction. 数据滤波模块 |
|
ATLDQS |
altdqs |
Parameterized bidirectional data strobe megafunction. 参数化的双向数据滤波器 |
|
|
atldq_dqs |
Parameterized data strobe megafunction. 参数化的数据滤波器 |
|
ALTGX |
alt4gxb |
High-Speed Serial Interface (HSSI) GXBmegafunction. 高速串行千兆收发器 |
|
ALTGXB |
altgxb |
GXB megafunction. 千兆位收发器 |
|
ALTIOBUF |
altiobuf_bidir |
Bidirectional I/O buffer megafunction. 双向I/O缓冲模块 |
|
altiobuf_in |
Input I/O buffer megafunction. 输入缓冲模块 |
|
|
altiobuf_out |
Output I/O buffer megafunction. 输出缓冲模块 |
|
|
ALTLVDS |
altlvds_rx |
Low voltage differential signalling (LVDS) receiver megafunction. 低电压差分信号接收器 |
|
altlvds_tx |
Low voltage differential signalling (LVDS) transmitter megafunction. 低电压差分信号发送器 |
|
|
ALTMEMPHY |
ALTMEMPHY |
External DDR Memory PHY interface megafunction. PHY接口的外部的DDR存储器 |
|
ALTOCT |
alt_oct |
On-chip termination (OCT) megafunction. 片上终端模块 |
|
ALTPLL |
altpll |
Parameterized PLL megafunction. 参数化的锁相环模块 |
|
ALTPLL_RECONFIG |
altpll_reconfig |
Parameterized PLL reconfiguration megafunction. 参数化可重配置的锁相环模块 |
|
ALTREMOTE_UPDATE |
altremote_update |
Parameterized remote update megafunction. 参数化的远程更新模块 |
|
|
altstratixii_oct |
Parameterized OCT megafunction. 参数化的片上终端模块 |
|
MAX II oscillator |
altufm_osc |
Oscillator megafunction. 震荡器模块 |
JTAG-accessible Extensions MegaWizards and Megafunctions:
|
MegaWizard |
Megafunction(s) |
Comments |
|
In-System Sources and Probes |
altsource_probe |
In-system debugging megafunction. 在系统调试模块 |
|
Parallel Flash Loader |
altparallel_flash_loader |
Parallel flash loader (PFL) megafunction. 并行的快速载入模块 |
|
Serial Flash Loader |
altserial_flash_loader |
Serial flash loader megafunction. 串行的快速载入模块 |
|
SignalTap II Logic Analyzer |
sld_signaltap |
SignalTap II Logic Analyzer megafunction. SignalTap II逻辑分析模块 |
|
Virtual JTAG |
sld_virtual_jtag |
Virtual JTAG Interface (VJI) megafunction. 虚拟的JTAG接口模块 |
Memory Compiler MegaWizards and Megafunctions:
Memory Compiler includes FIFO Partitioner, RAM, ROM, and memory functions.
|
MegaWizard |
Megafunction(s) |
Comments |
|
Ram initializer |
altmem_init |
RAM initialization from ROM megafunction. ROM中载入数据初始化RAM |
|
CAM |
altcam |
Content-addressable memory (CAM) megafunction. 可设地址的存储器模块 |
|
FIFO |
dcfifo |
Parameterized dual-clock FIFO megafunction. 参数化的双时钟先入先出模块 |
|
dcfifo_mixed_widths |
Parameterized dual-clock mixed-widths FIFO megafunction. 参数化的双时钟混合宽度的先入先出模块 |
|
|
scfifo |
Parameterized single-clock FIFO megafunction. 参数化的单时钟先入先出模块 |
|
|
FIFO partitioner |
altcsmem |
FIFO partitioner megafunction. 先入先出区分模块 |
|
Flash Memory |
altufm_i2c |
User flash memory megafunction with the inter-integrated circuit (I2C) interface protocol. IIC接口的闪存模块 |
|
altufm_none |
User flash memory megafunction (no interface protocol). 无接口协议的闪存模块 |
|
|
altufm_parallel |
User flash memory megafunction with the parallel interface protocol. 并行接口的闪存模块 |
|
|
altufm_spi |
User flash memory megafunction with the serial peripheral interface (SPI) protocol. SPI接口的闪存模块 |
|
|
RAM: 1-PORT |
altdpram* |
Parameterized dual-port RAM megafunction. 参数化的双端口RAM模块 |
|
altram* |
Parameterized RAM megafunction. 参数化的RAM模块 |
|
|
altsyncram |
Parameterized true dual-port RAM megafunction. 参数化的真实双端口RAM模块 |
|
|
RAM: 2-PORT |
altdpram* |
Parameterized dual-port RAM megafunction. 参数化的双端口RAM模块 |
|
altsyncram |
Parameterized true dual-port RAM megafunction. 参数化的真实双端口RAM模块 |
|
|
lpm_ram_dq* |
Parameterized RAM with separate input and output ports megafunction. 参数化的输入/输出接口分开的RAM模块 |
|
|
RAM: 3-PORT |
alt3pram |
Parameterized triple-port RAM megafunction. 参数化的三倍端口RAM模块 |
|
ROM: 1-PORT |
altrom* |
Parameterized ROM megafunction. 参数化的ROM模块 |
|
altsyncram |
Parameterized true dual-port synchronous RAM megafunction. 参数化的真实双端口同步RAM模块 |
|
|
lpm_rom* |
Parameterized ROM megafunction. 参数化的ROM模块 |
|
|
ROM: 2-PORT |
altsyncram |
Parameterized true dual-port synchronous RAM megafunction. 参数化的真实双端口同步RAM模块 |
|
Shift register(RAM-based) |
altshift_taps |
Parameterized shift register with taps megafunction. 参数化的移位寄存器模块 |
Storage MegaWizards and Megafunctions:
Storage includes LPM memory functions, parameterized flipflop, parameterized latch, and parameterized shift register functions.
|
MegaWizard |
Megafunction(s) |
Comments |
|
ALTCAM |
altcam |
Content-addressable memory (CAM) megafunction. 可设地址的存储器模块 |
|
ALTQPRAM |
altqpram* |
Parameterized quad-port RAM megafunction. 参数化的四倍接口的RAM模块 |
|
LPM_FF |
lpm_dff* |
Parameterized D-type flipflop and shift register megafunction. 参数化的D型双稳态移位寄存器模块 |
|
lpm_ff |
Parameterized flipflop megafunction. 参数化的双稳态模块 |
|
|
lpm_tff* |
Parameterized T-type flipflop megafunction. 参数化的T型双稳态模块 |
|
|
LPM_LATCH |
lpm_latch |
Parameterized latch megafunction. 参数化的锁模块 |
|
LPM_SHIFTREG |
lpm_shiftreg |
Parameterized shift register megafunction. 参数化的移位寄存器模块 |
|
Megafunction |
Comments |
|
csdpram |
Parameterized cycle-shared dual port RAM megafunction. 参数化的循环使用的双端口RAM模块 |
|
lpm_fifo* |
Parameterized single-clock FIFO megafunction. 参数化的单时钟先入先出模块 |
|
lpm_fifo_dc* |
Parameterized dual-clock FIFO megafunction. 参数化的双时钟先入先出模块 |
|
lpm_ram_dp* |
Parameterized dual-port RAM megafunction. 参数化的双端口先入先出模块 |
|
lpm_ram_io* |
Parameterized RAM with a single I/O port megafunction. 参数化的单信号端口RAM模块 |
Other Megafunctions:
The following megafunctions are not available in the MegaWizard Plug-in