http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





Integrated Circuit Systems
Integrated Circuit Systems

K142 Datasheet Preview

K142 Datasheet

OPL3/4+Codec Portable Clock Source

No Preview Available !

K142 pdf
MK1422
OPL3/4+Codec Portable Clock Source
Description
The MK1422 is the ideal way to generate clocks
for sound in portable computers. It provides clocks
for Analog Devices’ or Crystal Semiconductor’s
stereo codecs, and Yamaha’s OPL3L, OPL3LS,
and OPL4. The MK1422 uses either a
14.318 MHz crystal, or a 14.318 MHz bus clock
input to synthesize the clocks required to drive the
codec, and the 33.868 MHz required for the FM
or wavetable music synthesizer. It includes a power
down pin to save power without using a FET. In an
8 pin SOIC, the MK1422 can save component
count, board space, and cost over surface mount
crystals, and increase reliability by eliminating
three mechanical devices from the board.
MicroClock offers many other parts with stereo
codec support. MicroClock invented sound clocks,
and has the widest product offering and greatest
production experience on these devices. The
MK1422 is pin compatible with MicroClock’s
popular MK1420 when the 14.318MHz clock
output is not used. See the MK14223 for 3.3V.
Block Diagram
VDD GND
Features
• Packaged in 8 pin SOIC
• Input crystal or clock frequency of 14.318 MHz
• Output clock frequencies of 16.934 MHz,
24.576 MHz, and 33.868 MHz
• 25mA drive capability at TTL levels
• Advanced, low power CMOS process
• Low jitter ensures full 16 bit S/N ratio
• Insensitive to input clock duty cycle
• Power down for portable computers
AC Coupling/Portable Applications
For applications in portable computers, see the
MK14223, which is specified to operate at 3.3V. It
is possible to drive the MK1422 with a 3.3V,
14.318MHz clock by a.c. coupling using a 0.01µF
capacitor connected in series to the X1 pin. But the
operating VDD on pin 2 must be 5V±10%. This
technique is also effective if the input clock doesn’t
meet the VIH and VIL specifications on page 3.
Additional Clocks or Features
If more than these three output clocks or features
such as output enable are needed, MicroClock can
provide a quick turn modification for your custom
requirements.
All Chip
Power Down
14.318 MHz
crystal or clock
X1/ICLK
X2
Crystal
Oscillator
Clock Synthesis
Circuitry
Output
Buffer
Output
Buffer
Output
Buffer
16.934 MHz
24.576 MHz
33.868 MHz
MDS 1422 B
1
Revision 080698
Printed 11/15/00
Integrated Circuit Systems•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com



Integrated Circuit Systems
Integrated Circuit Systems

K142 Datasheet Preview

K142 Datasheet

OPL3/4+Codec Portable Clock Source

No Preview Available !

K142 pdf
Pin Assignment
X1/ICLK
VDD
GND
16.9M
1
2
3
4
MK1422
OPL3/4+Codec Portable Clock Source
Suggested Layout
14.318 MHz in
Pin 1 8
8 X2
7 PD
V
0.1µF
6 33.9M
5 24.6M
G
27
36
45
PD
33.9MHz
out
33(optional)
33(optional)
33(optional)
Pin Descriptions
16.9MHz out 24.6MHz out
Number
1
2
3
4
5
6
7
8
Name
X1/ICLK
VDD
GND
16.9M
24.6M
33.9M
PD
X2
Type
I
P
P
O
O
O
I
O
Description
Crystal Connection. Connect to a 14.318 MHz crystal or clock.
Connect to +5V.
Connect to ground.
16.9344 MHz clock output for stereo codec.
24.576 MHz clock output for stereo codec.
33.868 MHz clock output for OPL4.
Power Down. Shuts off entire chip when low. All clock outputs stop low.
Crystal Connection to a 14.318 MHz crystal, or leave unconnected for clock input.
Key: I = Input, O = output, P = power supply connection
External Components/Crystal Selection
A minimum number of external components are required for proper oscillation. For a crystal input, one
22pF load capacitor should be connected to each of the X1 and X2 pins and ground, and a parallel
resonant 14.318 MHz, 16pF load, crystal is recommended. Load capacitor values near these are acceptable,
as is a series resonant crystal, but either will result in frequencies which are further off of the target
frequency. For a clock input, connect to X1 and leave X2 unconnected. A decoupling capacitor of 0.1µF
should be connected between VDD and GND, and 33terminating resistors may be used on the clock
outputs.
MDS 1422 B
2
Revision 080698
Printed 11/15/00
Integrated Circuit Systems•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com


Part Number K142
Description OPL3/4+Codec Portable Clock Source
Maker Integrated Circuit Systems
Total Page 4 Pages
PDF Download
K142 pdf
Download PDF File
K142 pdf
View for Mobile






Related Datasheet

1 K140 Silicon bilateral voltage triggered switch. Breakover voltage 130V (min) to 146V (max) Ceramate
Ceramate
K140 pdf
2 K1400A 5V Crystal Clock Oscillators Champion
Champion
K1400A pdf
3 K1400E70 silicon bilateral voltage triggered switch Teccor
Teccor
K1400E70 pdf
4 K1400G silicon bilateral voltage triggered switch Teccor
Teccor
K1400G pdf
5 K1400S silicon bilateral voltage triggered switch Teccor
Teccor
K1400S pdf
6 K1401A 2SK1401A Hitachi Semiconductor
Hitachi Semiconductor
K1401A pdf
7 K1403 2SK1403 Hitachi Semiconductor
Hitachi Semiconductor
K1403 pdf
8 K1404 2SK1404 Hitachi Semiconductor
Hitachi Semiconductor
K1404 pdf
9 K1412 2SK1412 Sanyo
Sanyo
K1412 pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components