參數(shù)資料
型號(hào)： USB97C223
廠商： SMSC Corporation
英文描述： capacitor Selection for Internal Regulator Output Pins
中文描述： 電容的選擇內(nèi)部穩(wěn)壓器輸出引腳
文件頁(yè)數(shù)： 52/59頁(yè)
文件大?。?/td> 385K
代理商： USB97C223
SMSC DS – USB97C201
Page 52
Rev. 03/25/2002
PRELIMINARY
RAMRD_
TOGGLE
Written
No
Yes
RAMRD_
TOGGLE=
0
No
Yes
RAMRD_A=0;
Begin
Output A Buffer
SRAM Data
RAMRD_
TOGGLE
Written
Yes
No
POR
RAMRD_A=1
RAMRD_B=1
Output
Completed
No
Yes
RAMRD_A=1
RAMRD_
TOGGLE=
0
Yes
No
RAMRD_B=0;
Begin
Output B Buffer
SRAM Data
RAMRD_
TOGGLE
Written
No
Output
Completed
No
Yes
RAMRD_B=1
RAMRD_
TOGGLE=
1
No
Yes
Yes
OUTPUT
FLOW CONTROL
ACTIVE
OUTPUT
FLOW CONTROL
INACTIVE
RAMRD_B=0
RAMRD_B=0
Yes
No
RAMRD_A=0
RAMRD_A=0
Yes
FIGURE 4 - TRANSMIT BUFFER OPERATION
Transmit buffer operations are always initiated by writing the RAMRD_TOGGLE bit in the EP2 Control register.
Output flow control to the device receiving data from the SRAM buffer is active once data in both buffers has been
transferred. If the destination is the SIE, then it will NYET or NAK further INs. If it is the ATA interface, nDAK will not
be asserted in response to DRQ data will not be clocked out.
6.9.3
If the AUTO_TRANS bit is set in the ATA_CTL register, then automatic manipulation of the RAMWR_TOGGLE,
RAMRD_TOGGLE, RAMWR_B, and RAMWR_A bits is executed by a state machine to allow continuous streaming
of the data between EP2 and the ATA DMA interface. Automatic transfer of byte counts between the
RAMWRBC_A/B and RAMRDBC_A/B registers is also implemented. This is illustrated in Figure 5.
AUTOMATIC TRANSFER OPERATION
Note
: If the count in RAMWRBC_A/B is zero, no transfer will occur. This is likely to happen on transfers from the SIE
to the ATA at the very end of the transfer.
相關(guān)PDF資料
PDF描述
USB97C243 capacitor Selection for Internal Regulator Output Pins
USB97CFDC USB FLOPPY DISK CONTROLLER
USH-1000-KS Lamps for Photolithography
USH1000FAL2 Lamps for Photolithography
USH1002FGL Lamps for Photolithography
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
USB97C223-NE 制造商:SMSC 制造商全稱:SMSC 功能描述:Bus Powered USB 2.0 Flash Media Controller
USB97C223-NU 制造商:SMSC 制造商全稱:SMSC 功能描述:Bus Powered USB 2.0 Flash Media Controller
USB97C242 制造商:SMSC 制造商全稱:SMSC 功能描述:USB 2.0 Flash Drive Controller
USB97C242-MN 制造商:SMSC 制造商全稱:SMSC 功能描述:USB 2.0 Flash Drive Controller
USB97C242-MN-03 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*