CY7C68034-56LTXI データシートの表示（PDF） - Cypress Semiconductor
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CY7C68034-56LTXI Datasheet PDF : 40 Pages
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CY7C68033/CY7C68034
Overview
Cypress Semiconductor Corporation’s EZ-USB® NX2LP-Flex
(CY7C68033/CY7C68034) is a firmware-based, programmable
version of the EZ-USB NX2LP (CY7C68023/CY7C68024),
which is a fixed-function, low power USB 2.0 NAND Flash
controller. By integrating the USB 2.0 transceiver, serial interface
engine (SIE), enhanced 8051 microcontroller, and a program-
mable peripheral interface in a single chip, Cypress has created
a very cost-effective solution that enables feature-rich NAND
Flash-based applications.
The ingenious architecture of NX2LP-Flex results in USB data
transfer rates of over 53 Mbytes per second, the maximum
allowable USB 2.0 bandwidth, while still using a low cost 8051
microcontroller in a small 56-pin QFN package. Because it
incorporates the USB 2.0 transceiver, the NX2LP-Flex is more
economical, providing a smaller footprint solution than external
USB 2.0 SIE or transceiver implementations. With EZ-USB
NX2LP-Flex, the Cypress Smart SIE handles most of the USB
1.1 and 2.0 protocol, freeing the embedded microcontroller for
application-specific functions and decreasing development time
while ensuring USB compatibility.
The GPIF and master/slave endpoint FIFO (8- or 16-bit data bus)
provide an easy and glueless interface to popular interfaces such
as UTOPIA, EPP, I2C, PCMCIA, and most DSP processors.
Applications
The NX2LP-Flex enables designers to add extra functionality to
basic NAND Flash mass storage designs, or to interface them
with other peripheral devices. Applications may include:
■ NAND Flash-based GPS devices
■ NAND Flash-based DVB video capture devices
■ Wireless pointer/presenter tools with NAND Flash storage
■ NAND Flash-based MPEG/TV conversion devices
■ Legacy conversion devices with NAND Flash storage
■ NAND Flash-based cameras
■ NAND Flash mass storage device with biometric (for example,
fingerprint) security
■ Home PNA devices with NAND Flash storage
■ Wireless LAN with NAND Flash storage
■ NAND Flash-based MP3 players
■ LAN networking with NAND Flash storage
Figure 1. Example DVB Block Diagram
NAND-Based Buttons
DVB Unit
LCD
I/O
CTL
NX2LP-
CE[7:0]
Flex
D+/-
I/O
NAND Bank(s)
Audio / Video I/O
DVB
Decoder
Figure 2. Example GPS Block Diagram
NAND-Based Buttons
GPS Unit
LCD
I/O
CTL
NX2LP-
CE[7:0]
Flex
D+/-
I/O
NAND Bank(s)
GPS
The “Reference Designs” section of the Cypress web site
provides additional tools for typical USB 2.0 applications. Each
reference design comes complete with firmware source and
object code, schematics, and documentation.
Functional Overview
USB Signaling Speed
NX2LP-Flex operates at two of the three rates defined in the USB
Specification Revision 2.0, dated April 27, 2000:
■ Full speed, with a signaling bit rate of 12 Mbps
■ High speed, with a signaling bit rate of 480 Mbps.
NX2LP-Flex does not support the low speed signaling mode of
1.5 Mbps.
8051 Microprocessor
The 8051 microprocessor embedded in the NX2LP-Flex has
256 bytes of register RAM, an expanded interrupt system and
three timer/counters.
Document Number: 001-04247 Rev. *J
Page 4 of 40
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