EP501 [ACTEL]
EP501 NAND Flash Controller; EP501 NAND闪存控制器
| 型号： | EP501 |
| 厂家： | 
Actel Corporation |
| 描述： | EP501 NAND Flash Controller |
| 文件： | 总3页 (文件大小：118K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Eureka Technology
Product Summary
EP501 NAND Flash Controller
FEATURES
• Supports up to 4 banks of NAND Flash devices.
• Each bank contains up to 5 NAND Flash connected in parallel for a total of 20
NAND Flash devices.
• Simple user interface designed for easy on-chip integration.
• Options to provide PCI, AMBA AHB, AXI, PCMCIA, Cardbus or Compact-
Flash bus interface.
• Large Flash memory space can be accessed using data and index register
method.
• Programmable access timing, NAND Flash size, data width and number of
banks.
• Compatible with large block, small block and ONFI NAND Flash devices.
• User has full access to spare data in NAND Flash device.
• Optional single-bit correction double bit detection error correction code (ECC).
• Option to apply ECC protection on per word or per page basis.
• Error logging with ECC correction and detection.
• Interrupt generation based on ECC error.
• Fully static design with edge-triggered flip-flops.
BLOCK DIAGRAM
Control
Registers
User
User
Interface
Flash
Interface
Interface
NAND
Flash
AMBA AHB
Interface
(Optional)
ECC
Optional
Other I/F
(Optional)
EP501 NAND Flash
Controller
Tel: 1 650 960 3800
Copyright © by Eureka Technology Inc.
4962 El Camino Real,
Los Altos, CA 94022, USA
Fax: 1 650 960 3805
Page 1
http://www.eurekatech.com
Eureka Technology
EP501 NAND Flash
Controller
Description
The EP501 NAND Flash controller provides an easy interface for user to access
NAND Flash devices. Typical NAND Flash devices are accessed through compli-
cated sequence of command, address, data, and confirmation protocols. The
EP501 manages all the hardware protocols and allows the user to access NAND
Flash memory simply by reading and writing control registers inside the EP501.
A very large size of NAND Flash memory can be accessed through a small num-
ber of control registers. The NAND Flash controller occupies only a small size in
the system’s memory space without scarifying system performance. Burst access
to the NAND Flash memory is supported by the controller at full memory band-
width. Timing parameters of the controller is fully programmable so different
memory speeds are supported regardless of the operating frequency of the control-
ler.
The EP501 supports optional error correction code (ECC) that performs single-bit
error correction and double-bit error detection. There are options to provide ECC
protection on per word basis or per page basis. With per word ECC, 8 bits of ECC
code is generated by the core for each 32-bit data. A total for 40 bit is written to
the NAND Flash for each data word. Error detection and correction are automati-
cally performed by the core with error logging through internal control registers.
The core can be configure to generate interrupt on ECC error. ECC error can also
be injected into the NAND Flash device if desired for diagnostic purpose. With
per page ECC, 3 bytes of ECC code is generated for every page (512 bytes) of
data.
The EP501 is programmable to support both large block and small block NAND
Flash devices. Memory size, bus width, access timing, and number of banks are
all programmable.
Several options of user interface are available for the user to choose from. The
standard version features a simple user interface that is designed for on-chip sys-
tem integration. It has separate address and data buses and command signals that
supports burst transfer and wait state insertion. Other standard interface buses
including PCI, AMBA AHB, PCMCIA, and CardBus are available. The controller
acts as a target or slave device on these buses. With these standard bus interfaces,
the EP501 can be integrate seamlessly with systems built on these standards.
Optional Features
The EP501 NAND Flash controller supports the following optional features per
customer specification
Error Correction Code (ECC)
Power-on boot ROM support.
Tel: 1 650 960 3800
Fax: 1 650 960 3805
http://www.eurekatech.com
Copyright © by Eureka Technology Inc.
4962 El Camino Real,
Page 2
Los Altos, CA 94022, USA
Eureka Technology
EP501 NAND Flash
Controller
Different user interfaces: PCI, AMBA AHB, PCMCIA, PC
Card, or CompactFlash
Data width from 8 to 32 bits
More than 4 banks for memory devices.
ACTEL DEVICE UTILIZATION DATA
Family
Device
Utilization
COMB Total RAM
Performance
(-speed grade)
A3P1000-2
AX1000-2
AGLE600V5-STD 764
AFS1500-2 764
SEQ
764
758
ProASIC3
Axcelerator
IGLOO
2126
1372
2127
2126
12%
12%
21%
8%
0
0
0
0
63Mhz
68Mhz
38Mhz
61Mhz
Fusion
Tel: 1 650 960 3800
Fax: 1 650 960 3805
http://www.eurekatech.com
Copyright © by Eureka Technology Inc.
4962 El Camino Real,
Page 3
Los Altos, CA 94022, USA
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