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参数资料
| 型号： | ICS650R-27IT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 133.3333 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封装： | 0.150 INCH, SSOP-20 |
| 文件页数： | 2/7页 |
| 文件大小： | 230K |
| 代理商： | ICS650R-27IT |
Networking Clock Source
MDS 650-27 D
2
Revision 070505
Integrated Circuit Systems, Inc.
● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICS650-27
Pin Assignment
Pin Descriptions
13
4
12
5
11
ASC1
8
9
10
VDD
CLKC2
CLKA2
CCS
CLKB2
DC
17
16
CLKB1
3
X1/ICLK
VDD
CLKA1
18
REFOUT
1
ASC0
X2
BCS0
20
BCS1
19
14
2
7
GND
CLKC1
OE
GND
15
6
20-pin (150 mil) SSOP
Pin
Number
Pin
Name
Pin
Type
Pin Description
1
ACS0
Input
A clock select 0. Selects outputs on CLKA1 and CLKA2 per table on page 3.
2
X2
Input
Crystal connection. Connect to a fundamental crystal or leave unconnected for a clock
input.
3
X1/ICLK
Input
Crystal connection. Connect to a fundamental crystal or clock input.
4
VDD
Power
Connect to +3.3 V or 5 V. Must be the same as pin 16.
5
ACS1
Input
A clock select 1. Selects outputs on CLKA1 and CLKA2 per table on page 3. Internal
pull-up.
6
GND
Power
Connect to ground.
7
CLKC1
Output
Output Clock C1. Depends on setting of CCS per table on page 3.
8
CLKC2
Output
Output Clock C2. Depends on setting of CCS per table on page 3. Same as CLKC1.
9
CLKB2
Output
Output Clock B2. Depends on setting of BCS1, 0 per table on page 3.
10
CLKB1
Output
Output Clock B1. Depends on setting of BCS1, 0 per table on page 3.
11
CCS
Input
Clock C select pin. Selects outputs on CLKC1 and CLKC2 per table on page 3.
12
DC
-
Don’t connect. Do not connect anything to this pin.
13
CLKA2
Output
Output Clock A2. Depends on setting of ACS1, 0 per table on page 3.
14
GND
Power
Connect to ground.
15
OE
Input
Output enable. Tri-states all outputs when low. Internal pull-up.
16
VDD
Power
Connect to +3.3 V or 5 V. Must be the same as pin 4.
17
CLKA1
Output
Output Clock A1. Depends on setting of ACS1, 0 per table on page 3.
18
REFOUT
Output
Buffered reference clock output. Same frequency as crystal or clock input.
19
BCS0
Input
B clock select 0. Selects outputs on CLKB1 and CLKB2 per table on page 3.
20
BCS1
Input
B clock select 1. Selects outputs on CLKB1 and CLKB2 per table on page 3. Internal
pull-up.
ICS650-27
Networking Clock Source
TSD
IDT / ICS Networking Clock Source
ICS650-27
2
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