參數(shù)資料
型號(hào)： USS-820D
英文描述： USS-820D USB Device Controller
中文描述： 號(hào)- 820D USB設(shè)備控制器
文件頁(yè)數(shù)： 35/58頁(yè)
文件大?。?/td> 868K
代理商： USS-820D
Agere Systems Inc.
35
Data Sheet, Rev. 4
June 2001
USB Device Controller
USS-820D
Register Interface
(continued)
Table 29. Receive FIFO Flag Register (RXFLG)—Address: 09H; Default: 0000 1000B
(continued)
Bit
0
Symbol
RXOVF
Function/Description
Receive FIFO Overrun Flag (Read, Clear Only).
This bit is set when the SIE writes an
additional byte to a full receive FIFO or writes a byte count to RXCNT with RXFIF[1:0] =
11. This bit must be cleared by firmware through RXCLR, although it can be cleared by
hardware if a SETUP packet is received after an RXOVF error has already occurred.
When this bit is set, all transmissions are NACKed.
In isochronous mode, RXOVF, RXURF, and RXFIF are handled using the following rule:
firmware events cause status change immediately, while USB events cause status
change only at SOF. Since overrrun can only be caused by the USB, RXOVF is updated
only at the next SOF regardless of where the overrun occurred during the current frame.
Note:
When this bit is set, the FIFO is in an unknown state. It is recommended that the
FIFO is reset in the error management routine using the RXCLR bit in the RXCON
register. When the receive FIFO overruns, the write pointer does not advance. It
remains locked in the full position.
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參數(shù)描述
USS820D-DB 制造商:AGERE 制造商全稱:AGERE 功能描述:USS-820D USB Device Controller
USS820FD 制造商:AGERE 制造商全稱:AGERE 功能描述:USB Device Controller
USS-820FD 制造商:AGERE 制造商全稱:AGERE 功能描述:USB Device Controller
USS820TD-DB 制造商:AGERE 制造商全稱:AGERE 功能描述:USS-820D USB Device Controller
USSFZ 038 功能描述:WASHER FLAT 3/8" RoHS:否 類別:硬件，緊固件，配件 >> 墊圈 系列:* 標(biāo)準(zhǔn)包裝:100 系列:- 類型:扁平 螺紋/螺釘/孔尺寸:#10 螺釘尺寸 直徑 - 內(nèi)部:0.196"（4.98mm） 直徑 - 外部:0.500"（12.70mm）1/2" 厚度:0.047"（1.19mm） 鍍層:- 材質(zhì):尼龍 其它名稱:3177K
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