- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363888 > W48S87-72H (CYPRESS SEMICONDUCTOR CORP) CPU System Clock Generator PDF資料下載
參數(shù)資料
| 型號： | W48S87-72H |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | CPU System Clock Generator |
| 中文描述： | 66.8 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, SSOP-48 |
| 文件頁數(shù)： | 10/19頁 |
| 文件大小： | 248K |
| 代理商： | W48S87-72H |
W48S87-72
10
Signaling Requirements
As shown in
Figure 4
, valid data bits are defined as stable logic
0 or 1 condition on the data line during a clock HIGH (logic 1)
pulse. A transitioning data line during a clock HIGH pulse may
be interpreted as a start or stop pulse (it will be interpreted as
a start or stop pulse if the start/stop timing parameters are
met).
A write sequence is initiated by a
“
start bit
”
as shown in
Figure
5
. A
“
stop bit
”
signifies that a transmission has ended.
As stated previously, the W48S87-72 sends an
“
acknowledge
”
pulse after receiving eight data bits in each byte as shown in
Figure 6
.
Sending Data to the W48S87-72
The device accepts data once it has detected a valid start bit
and address byte sequence. Device functionality is changed
upon the receipt of each data bit (registers are not double buff-
ered). Partial transmission is allowed meaning that a transmis-
sion can be truncated as soon as the desired data bits are
transmitted (remaining registers will be unmodified). Transmis-
sion is truncated with either a stop bit or new start bit (restart
condition).
6'$7$
6&/2&.
9DOLG
'DWD
%LW
&KDQJH
RI 'DWD $OORZHG
Figure 4. Serial Data Bus Valid Data Bit
6'$7$
6&/2&.
6WDUW
%LW
6WRS
%LW
Figure 5. Serial Data Bus Start and Stop Bit
相關PDF資料 |
PDF描述 |
|---|---|
| W48S87 | Spread Spectrum 3 DIMM Desktop Clock |
| W48S87-72 | Desktop/Notebook Frequency Generator(桌上型電腦/筆記本電腦系統(tǒng)頻率發(fā)生器) |
| W49F002 | 256K X 8 CMOS FLASH MEMORY |
| W49F002U-12B | MB 32C 32#20 SKT RECP |
| W49F002U-70B | 256K X 8 CMOS FLASH MEMORY |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W48S87-72XT | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| W49 | 制造商:CERAMATE 制造商全稱:CERAMATE 功能描述:3-Phase Motor Driver for CD-ROMs |
| W490 | 制造商:Pulse Electronics Corporation 功能描述:- Bulk |
| W49180 | 制造商:SEOUL 制造商全稱:Seoul Semiconductor 功能描述:Super high flux output and high luminance |
| W49180/07/-U2 | 制造商:Seoul Semiconductor 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。