- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378403 > AN2121SC (CYPRESS SEMICONDUCTOR CORP) USB Controller(通用串行總線（USB）控制器) PDF資料下載
參數(shù)資料
| 型號： | AN2121SC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | USB Controller(通用串行總線（USB）控制器) |
| 中文描述： | 8-BIT, 24 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 491K |
| 代理商： | AN2121SC |
EZ-USB Series 2100
Enumeration and
ReNumeration
Anchor Chips’ proprietary
ReNumeration function is the
means by which the enhanced
8051 firmware is downloaded.
How It Works
Upon power-up or plug-in, the
EZ-USB chip automatically
enumerates as a default USB
device. This allows the USB core
to download 8051 code. The USB
core logic inside EZ-USB per-
forms this initial enumeration
and code download while holding
the 8051 in reset.
Once enumerated, the host PC
downloads 8051 code into
EZ-USB RAM over the USB
interface. (Anchor Chips supplies
the software tools to incorporate
the loader into any application).
The downloaded 8051 code
contains program, data, and
enumeration tables. Once loaded,
the EZ-USB core performs a
ReNumeration cycle to simulate a
USB disconnect and reconnect to
come back as a completely new
USB device.
This entire sequence of enumera-
tion, download and ReNum-
eration happens quickly (less
than a quarter of a second) and is
transparent to the user.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AN2125SC | USB Controller(USB控制器) |
| AN2126SC | USB Controller(USB控制器) |
| AN2131QC | USB Controller(通用串行總線（USB）控制器) |
| AN2131SC | USB Controller(USB控制器) |
| AN2135SC | USB Controller(通用串行總線（USB）控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN2122S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:(1.49 M) |
| AN2122T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:(1.49 M) |
| AN2125 | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:NTSC/PAL signal processor IC for 510H color CCD camera |
| AN2125FHS | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:NTSC/PAL signal processor IC for 510H color CCD camera |
| AN2125S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:(1.49 M) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。