数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

STCD2400 数据表(PDF) 13 Page - STMicroelectronics

部件名 STCD2400
功能描述  Multichannel clock distribution circuit
PDF  39 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STCD2400 数据表(HTML) 13 Page - STMicroelectronics

Back Button STCD2400 Datasheet HTML 9Page - STMicroelectronics STCD2400 Datasheet HTML 10Page - STMicroelectronics STCD2400 Datasheet HTML 11Page - STMicroelectronics STCD2400 Datasheet HTML 12Page - STMicroelectronics STCD2400 Datasheet HTML 13Page - STMicroelectronics STCD2400 Datasheet HTML 14Page - STMicroelectronics STCD2400 Datasheet HTML 15Page - STMicroelectronics STCD2400 Datasheet HTML 16Page - STMicroelectronics STCD2400 Datasheet HTML 17Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 13 / 39 page
background image
STCD22x0, STCD23x0, STCD24x0
Device operation
Doc ID 15400 Rev 2
13/39
Note:
"0" means logic low and "1" means logic high. When there is NO CLOCK output, the CLKx
pin stays at logic low. "X" means don't care. This is an active high truth table. Refer to
Section 3.2: Enable polarity for the detailed enable active high/low options.
3.2
Enable polarity
In different applications, the user may have different requirements for enable active high or
active low (enable polarities). MCREQ is active low. STMicroelectronics offers different
solutions for the user to obtain different enable polarities.
In the STCD22x0 and STCD24x0, the user can configure the enable active high or active
low on the PC board by connecting OPT1 and OPT2 to either VCC or ground. Refer to
Table 7 for detailed information.
In the STCD23x0, STMicroelectronics offers 4 enable polarity options by factory
programming for the user. Refer to
Table 7 for detailed information.
The user should note that OPT1 and OPT2 must be connected to either VCC or GND on the
PC board and floating on these pins could cause problems.
Table 6.
Truth table for enable signals (EN1-4), master clock input (MCLK) and
output clocks (CLK1-4)
EN1
EN2
EN3
EN4
MCLK
CLK1
CLK2
CLK3
CLK4
0
0
0
0
X
NO CLOCK
NO CLOCK
NO CLOCK
NO CLOCK
1
0
0
0
CLOCK
CLOCK
NO CLOCK
NO CLOCK
NO CLOCK
1
1
0
0
CLOCK
CLOCK
CLOCK
NO CLOCK
NO CLOCK
-
-
-
-
-
----
1
1
1
1
CLOCK
CLOCK
CLOCK
CLOCK
CLOCK
Table 7.
STCD22x0, STCD23x0 and STCD24x0 and enable polarity options
Part number
Enable polarities (OPT1, OPT2)
Enable polarity
program method
STCD2200
OPT1 connected to VCC, EN1 active high
OPT1 connected to GND, EN1 active low
OPT2 controls EN2
User program
STCD2400
OPT1 connected to VCC, EN1 and EN2 active high
OPT1 connected to GND, EN1 and EN2 active low
OPT2 controls EN3 and EN4
STCD2410
OPT1 connected to VCC, EN1 active high
OPT1 connected to GND, EN1 active low
OPT2 controls EN2, EN3, and EN4
STCD2300
EN1, EN2 and EN3 all active low
Factory program
STCD2310
EN1, EN2 active low, and EN3 active high
STCD2320
EN1, EN2 active high and EN3 active low
STCD2330
EN1, EN2 and EN3 all active high



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com