SL11RIDE Ver la hoja de datos (PDF) - Cypress Semiconductor

Número de pieza

componentes Descripción

Lista de partido

SL11RIDE

USB to IDE/ATAPI Solution

Cypress Semiconductor 

SL11RIDE

X1

Rf

1M

X1

12 MHz , series, 20-pF load

Cin

22 pF

X2

Rs

100

Cout

22 pF

Figure 4-3. 12-MHz Crystal Circuits

Note: You need to set bit C2 =1 from configuration address (0xC006). See section 10.8 for CPU speed control.

4.7 Serial I2C Interface

The SL11RIDE provides an interface to an external serial flash EEPROM. A variety of serial EEPROM formats can be supported.

Currently the SL11RIDE firmware supports the two-wire serial flash EEPROM type. It can be used for field product upgrades if

needed.

The recommended serial EEPROM device is a two-wire Serial CMOS EEPROM (AT24LCXX Device Family). Currently, the

SL11RIDE allows writing to EEPROM, up to 2 KBytes, using a 16-Kbit I2C device (i.e. AT24LC16B/SN).

The USB vendor/device configuration can be programmed and stored into the external EEPROM device. On power-up, the

contents of the EEPROM will be downloaded into RAM. The advantage of the EEPROM interface is both cost and space saving

compared with using an external 8-bit PROM/EPROM.

EEPROM

1

2

3

4

A0

A1

A2

GND

VCC

WP

SCL

SDA

8

7

6

5

SCL

SDA

AT24C16

VCC

1.5-5K

0.1 µF

Figure 4-4. I2C 2-Kbyte Connection

Note: You can choose either a 3.3V or a 5.0V EEPROM.

5.0 Software

The SL11RIDE software is USB Specification and USB Mass Storage Class Bulk-Only Transport version 1.0 compliant in the

final release. In the meantime, it will try to track changes to the USB Mass Storage Class Bulk-Only Transport as closely as

possible. The interface to the host PC is USB, which allows true Plug-and-Play (PnP). The requirement for Operating System

(OS) on the host PC side is Win98/2000 or MAC.

Document #: 38-08007 Rev. **

Page 7 of 27

Share Link: