参数资料
型号: MK2743STR
元件分类: 时钟产生/分配
英文描述: 66 MHz, VIDEO CLOCK GENERATOR, PDSO16
封装: 0.150 INCH, SOIC-16
文件页数: 2/4页
文件大小: 30K
代理商: MK2743STR
MK2743
C-Cube MPEG Encoder Clock Source
MDS2743B
2
Revision 12047
Printed 12/4/97
MicroClock Division of ICS1271 Parkmoor Ave.San JoseCA95126(408)295-9800tel(408)295-9818fax
ICRO
CLOCK
Pin Descriptions
Audio Clock and NUCLK
(in MHz)
Key: I = Input, O = output, P = power supply connection
Pin Assignment
Number
Name
Type
Description
1
ACS1
I
Audio Clock Select 1. Selects ACLK on pin 6 and NUCLK on pin 7. See table above.
2
X2
O
Crystal connection. Connect to 27 MHz crystal. Leave unconnected for clock input.
3
X1/ICLK
I
Crystal connection. Connect to 27 MHz crystal or connect to 27 MHz input clock.
4
VDD
P
Connect to +5V.
5
GND
P
Connect to ground.
6
ACLK
O
Audio Clock output. Determined by status of ACS1, ACS0. See table above.
7
NUCLK
O
Clock output Determined by status of ACS1 and ACS0. See table above.
8
27M
O
27.00 MHz buffered reference clock output. Duty cycle matches input clock.
9
PCS
I
Processor Clock Select. Selects processor clock on pins 10, 11, and 15. See table above.
10
PCLK/2
O
Processor Clock output divided by two. Determined by status of PCS. See table above.
11
PCLK/4
O
Processor Clock output divided by four. Determined by status of PCS. See table above.
12
GND
P
Connect to ground.
13
VDD
P
Connect to +5V.
14
GND
P
Connect to ground.
15
PCLK
O
Processor Clock output Determined by status of PCS. See table above.
16
ACS0
I
Audio Clock Select 0. Selects audio clock on pin 6 and NUCLK on pin 7. See table above.
Processor Clock (in MHz)
ACS1 ACS0
ACLK
NUCLK
0
8.192
40
0
1
11.2896
40
1
0
12.288
40
1
16.9344
24.576
PCS PCLK PCLK/2 PCLK/4
0
60.0
30.0
15.0
1
66.0
33.0
16.5
1
16
2
3
4
15
14
13
VDD
GND
X2
VDD
GND
16 pin narrow (150 mil) SOIC
5
6
7
8
12
11
10
9
PCLK/2
PCLK
X1/ICLK
NUCLK
ACS1
GND
ACS0
ACLK
27M
PCLK/4
PCS
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