a3load is 8051 firmware that can be used for uploading or downloading
to EZ-USB RAM (internal or external). It implements the vendor specific
command bRequest = 0xA3. The address to download/upload to/from is
specified in the wValue field of the SETUP packet and the length of
the transfer in the wLength field. The actual upload/download data
is Transferred during the DATA stage of the SETUP transfer. This firmware
will function on all EZ-USB chips (EZ-USB, EZ-USB FX, FX2, FX2LP, FX1).
一個(gè)簡(jiǎn)單的ＳＰＩ?。桑泻?，SPI Core Specifications 可以從說(shuō)明文檔中找到！
The simple Serial Peripheral Interface core is an enhanced version of the Serial Peripheral Interface found on Motorola s M68HC11 family of CPUs. The Serial Peripheral Interface is a serial, synchronous communication protocol that requires a minimum of 3 wires.
FEATURES:
· Compatible with Motorola’s SPI specifications
· Enhanced M68HC11 Serial Peripheral Interface
· 4 entries deep read FIFO
· 4 entries deep write FIFO
· Interrupt generation after 1, 2, 3, or 4 Transferred bytes
· 8 bit WISHBONE RevB.3 Classic interface
· Operates from a wide range of input clock frequencies
· Static synchronous design
· Fully synthesizable
/*SPI規(guī)范：Data is always clocked into the device on the rising edge of SCK a-*/
/* nd clocked out of the device on the falling edge of SCK.All instruction-*/
/* s,addresses and data are Transferred with the most significant bit(MSB) */
/* first.
This approach, we feel, came very close to obtaining an image from the camera OV7620. Before we tried to capture a camera signal, we successfully Transferred a test image from the FPGA s onboard RAM modules through RS232 to the PC program. This file do it.
GPS Track connects to a GPS and records the path that you travel. Tracks can be uploaded to a web site, sent by email, Transferred via Bluetooth, or written to a flash memory card.
