参数资料
型号: MK2745-20STRLF
元件分类: 时钟产生/分配
英文描述: 108 MHz, VIDEO CLOCK GENERATOR, PDSO16
封装: 0.150 INCH, SOIC-16
文件页数: 2/4页
文件大小: 61K
代理商: MK2745-20STRLF
PS2 PS1 PS0
PCLK
0
108
0
1
55
0
1
0
66.66
0
1
80
1
0
54
1
0
1
81
1
0
50
1
60
MK2745-20
MPEG Clock Source
MDS 2745-20 A
2
Revision 052499
Printed 11/16/00
Integrated Circuit Systems 525 Race Street San Jose CA 95126 (408)295-9800tel (408)295-9818fax
PRELIMINARY INFORMATION
Pin Descriptions
Audio Clock ( MHz)
Decoding Table
Key: I = Input, O = output, P = power supply connection
Pin Assignment
Number
Name
Type
Description
1
PS2
I
Processor clock Select 2. Selects processor clock outputs per table above.
2
X2
XO
Crystal connection. Connect to 27 MHz crystal. Leave unconnected for clock input.
3
X1/ICLK
XI
Crystal connection. Connect to 27 MHz crystal or connect to 27 MHz input clock.
4
VDD
P
Connect to +3.3 V or +5 V. Must be same as other VDD.
5
GND
P
Connect to ground.
6
ACLK
O
Audio Clock output. Determined by status of AS2, AS1, AS0. See table above.
7
PCLK
O
Processor Clock output. Determined by status of PS2, PS1, PS0. See table above.
8
AS2
I
Audio clock Select 2. Selects audio clock on pin 6 per table above.
9
AS0
I
Audio clock Select 0. Selects audio clock on pin 6 per table above.
10
27M
O
27.00 MHz clock output.
11
GND
P
Connect to ground.
12
AS1
I
Audio clock Select 1. Selects audio clock on pin 6 per table above.
13
VDD
P
Connect to +3.3 V or +5 V. Must be same as other VDD.
14
24.576M
O
24.576 MHz clock output.
15
PS0
I
Processor clock Select 0. Selects processor clock outputs per table above.
16
PS1
I
Processor clock Select 1. Selects processor clock outputs per table above.
Processor Clock (in MHz)
MK2745-20
16 pin (150 mil) SOIC
AS2 AS1 AS0
ACLK
0
12.288
0
1
11.2896
0
1
0
8.192
0
1
24.576
1
0
8.192
1
0
1
16.9344
1
0
18.432
1
11.2896
1
16
2
3
4
15
14
13
VDD
GND
X2
VDD
GND
5
6
7
8
12
11
10
9
AS2
24.576M
X1/ICLK
27M
PS2
PS1
PS0
ACLK
AS1
AS0
PCLK
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