MK2722-01S ICST [Integrated Circuit Systems], MK2722-01S Datasheet - Page 2

• Manufacturer Part Number: MK2722-01S
• Description: Sigma Designs Clock Source
• Manufacturer: ICST [Integrated Circuit Systems]

MDS 2722 B
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • [phone]tel • www.icst.com
Pin Assignment
Pin Descriptions
Key: I = Input, TI = Tri-level input, O = output, P = power supply connection
Number
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
ACLK
VDD
VDD
GND
BS1
AS0
X2
X1
16 pin narrow (150 mil) SOIC
BCLK/2
Name
ACLK
BCLK
GND
GND
VDD
VDD
BS1
AS0
AS1
VDD
27M
BS0
X2
X1
PD
2
1
3
4
7
8
5
6
Type
XO
XI
O
TI
O
O
O
P
P
P
P
I
I
I
I
I
16
15
14
13
12
11
10
9
Description
Connect to +5V.
Crystal connection. Connect to 27 MHz crystal. Leave unconnected for clock input.
Crystal connection. Connect to 27 MHz crystal or clock.
Connect to +5V.
Connect to ground.
Select 1 for BCLK. Determines BCLK outputs per table above. Internal pull-up.
Audio Clock output. Determined by status of AS1, AS0 per table above.
Select 0 for ACLK. Determines ACLK output per table above.
BCLK output. Determined by status of BS1, BS0 per table above.
BCLK divided by two output. Determined by status of BS1, BS0 per table above.
Connect to ground.
Select 1 for ACLK. Determines ACLK output per table above. Internal pull-up.
Connect to +5V.
27.0000 MHz buffered crystal clock output.
Power Down. Active low. Clocks stop low. Internal pull-up.
Select 0 for BCLK. Determines BCLK outputs per table above. Internal pull-up.
BS0
PD
27M
VDD
AS1
GND
BCLK/2
BCLK
2
Sigma Designs Clock Source
ACLK Decoding Table (MHz)
BCLK Decoding Table (MHz)
pin 12
AS1
pin 6
BS1
0
0
0
1
1
1
0
0
1
1
pin 16
pin 8
AS0
BS0
M
M
0
1
0
1
0
1
0
1
16.9344
11.2896
28.6364
12.288
18.432
12.288
ACLK
8.192
BCLK
pin 7
pin 9
40.5
50
40
14.3182
BCLK/2
pin 10
20.25
Revision 020802
MK2722
25
20