CN100456734C - 使用多端口存储器的体系结构、装置、系统及其使用方法 - Google Patents
使用多端口存储器的体系结构、装置、系统及其使用方法 Download PDFInfo
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- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1075—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers for multiport memories each having random access ports and serial ports, e.g. video RAM
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Abstract
Description
宽度 | 信号名称 | 类型 | 文字说明 |
1 | WPCK | 输入 | 端口写时钟脉冲。一个专用时钟应对应每个写端口以同步加载写数据至写入页输入内。若时序允许电源不重要则可对所有端口使用一个公共时钟。 |
1 | NWSE0 | 输入 | 写入线选择信号。当其为低时激活具有写双重缓冲器的0线路。当对整个线路写入时,NWSE0必须在32个WPCK周期保持为低。若NWSE0和NWSE1两者均得到认定(asserted),则将相同的数据写至两个线路。 |
1 | NWSE1 | 输入 | 写入线选择信号。当其为低时激活具有写双重缓冲器的1线路。当对整个线路写入时,NWSE1必须在32个WPCK周期保持为低。若NWSE0和NWSE1两者均得到认定,则将相同的数据写至两个线路。 |
1 | WEPR | 输入 | 写输入选择指示器复位信号。该信号与NWSE结合使用且与WPCK同步。WEPR相对于WPCK的上升沿而认定,将选定的写输入选择指示器设为输入0。若NWSE0和NWSE1两者均得到认定,则写输入选择指示器对两个写入线均被复位到输入0。在认定WEPR之后,WPCK的各后续周期使选定写输入选择指示器前进。在输入选择指示器前进到最后的输入之后,所有后续的WPCK周期将产生空值指示字。当在WPCK的上升沿上接着认定了WEPR时,选定的写指示器将指向输入0 |
8 | WD[7:0] | 输入 | 端口写8位数据总线。 |
宽度 | 信号名称 | 类型 | 文字说明 |
1 | RPCK | 输入 | 端口读时钟。该时钟选通数据从读输入缓冲器到端口读数据总线上。一个专用时钟可以伴随每个读端口去从读页输入同步读数据。 |
1 | NRSE0 | 输入 | 读出线0选择信号。当其为低时激活具有读双重缓冲器的0线路。为移出32个输入的内容,在32个RPCK周期上认定NRSE0。 |
1 | NRSE1 | 输入 | 读出线1选择信号。当其为低时激活具有读双重缓冲器的1线路。为移出32个输入的内容,在32个RPCK周期上认定NRSE1。 |
8 | RD[7:0] | 输出 | 端口读8位数据总线。 |
1 | PWCK | 输入 | 并行写端口时钟。 |
1 | LPWR | 输入 | 并行加载写寄存器。与PWCK同步。 |
N*8 | PRD[N*8-1:0] | 输出 | 用于并行读端口的读总线。与MCK同步。 |
N*8 | PWD[N*8-1:0] | 输入 | 用于并行写端口的写总线。与PWCK同步。 |
N*8 | SBUS[N*8-1:0] | 输出 | 用于窥探寄存器的读总线。与MCK同步。 |
1 | SLD | 输入 | 窥探寄存器加载信号。与MCK同步。 |
1 | NRST | 输入 | 端口逻辑复位信号。 |
1 | NWR | 输入 | 存储器写信号。低电平有效。与MCK时钟同步。当被认定时,存储器使用源(PA)和目标(MA)地址执行写操作。指定端口页的内容被写入指定的存储块页内。 |
1 | NRD | 输入 | 存储器读信号。低电平有效。与MCK同步。当被认定时,存储器使用源(MA)和目标(PA)地址执行读操作。内容被读进指定的端口页内。 |
5 | PA[4:0] | 输入 | 端口地址。最大30个端口(用于一个5位地址)。这是用于从端口页至主存储器的写操作的源地址,或者用于从主存储器到端口页的读操作的目的地地址。 |
1 | PL | 输入 | 指定从双重缓冲页的哪一个线路访问。“0”指定线路0。“1”指定线路1。不用于单重缓冲器结构。 |
12 | MA[11:0] | 输入 | 用于读或者写操作的存储页地址。最大4096页。这是用于写存储操作的端口页的目的地地址,以及用于读到端口页的存储页的源地址。 |
宽度 | 信号名称 | 类型 | 文字说明 |
1 | MCK | 输入 | MCK是用于存储块的时钟。可以与PCK异步。所有存储块操作均与MCK同步。 |
1 | FDINH | 输入 | 在系统复位之后,从熔线盒(fuse block)经由本端口加载的用于存储器子模块H的冗余信息。 |
1 | FDINL | 输入 | 在系统复位之后,从熔线盒经由本端口加载的用于存储器子模块L的冗余信息。 |
1 | FSCKH | 输入 | 根据FDINH用以由熔线盒锁存数据的时钟。 |
宽度 | 信号名称 | 类型 | 文字说明 |
1 | FSCKL | 输入 | 根据FDINH用以由熔线盒锁存数据的时钟。 |
2(或更多) | WTC | 输入 | 用于设置内部的写入定时余量的代码。可以输入到可编程寄存器中。 |
3(或更多) | RTC | 输入 | 用于设置内部的写入定时余量的代码。可以输入到可编程寄存器中。 |
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US45444303P | 2003-03-13 | 2003-03-13 | |
US60/454,443 | 2003-03-13 | ||
US10/702,744 | 2003-11-05 | ||
US10/702,744 US7571287B2 (en) | 2003-03-13 | 2003-11-05 | Multiport memory architecture, devices and systems including the same, and methods of using the same |
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CN100456734C true CN100456734C (zh) | 2009-01-28 |
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JP (2) | JP2004288355A (zh) |
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US20040205305A1 (en) | 2004-10-14 |
JP2009064548A (ja) | 2009-03-26 |
JP2004288355A (ja) | 2004-10-14 |
US20140215164A1 (en) | 2014-07-31 |
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CN1531275A (zh) | 2004-09-22 |
EP1457993B1 (en) | 2010-09-08 |
US7571287B2 (en) | 2009-08-04 |
JP5107204B2 (ja) | 2012-12-26 |
TWI263228B (en) | 2006-10-01 |
US8688877B1 (en) | 2014-04-01 |
DE602004028981D1 (de) | 2010-10-21 |
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Address after: Babado J San Michaele Patentee after: MARVELL WORLD TRADE Ltd. Address before: Barbados Bermuda Patentee before: MARVELL WORLD TRADE Ltd. |
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Effective date of registration: 20201214 Address after: Shin ha Po Patentee after: Marvell Asia Pte. Ltd. Address before: Grand Cayman Islands Patentee before: Kavim International Inc. Effective date of registration: 20201214 Address after: Grand Cayman Islands Patentee after: Kavim International Inc. Address before: Hamilton, Bermuda Patentee before: Marvell International Ltd. Effective date of registration: 20201214 Address after: Hamilton, Bermuda Patentee after: Marvell International Ltd. Address before: Babado J San Michaele Patentee before: MARVELL WORLD TRADE Ltd. |
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