ABMX0122 데이터 시트보기 (PDF) - Abracon Corporation
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ABMX0122 Datasheet PDF : 4 Pages
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Preliminary ABMX0122
27MHz Multiple output XO with Audio Clock
FEATURES
• 2 XO outputs at 27MHz (27MHz crystal input).
• Selectable Audio Clocks supporting:
32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz
sampling rates
256, 384 and 512 oversampling ratios
8.192, 11.2896, 12.288, 16.9344, 16.384,
18.432, 22.5792, 24.576MHz audio frequencies
• On-the-fly switching of the audio frequency
• Power down tri-state selector.
• 3.3V Operating Voltage.
• Available in 16-Pin SSOP
PACKAGE PIN CONFIGURATION
XIN 1
XOUT 2
VDD 3
VDD 4
NC 5
GND 6
GND 7
PDOWN^
8
16 S1^
15 27MHz
14 VDD
13 S0^
12 27MHz
11 GND
10 ACLK
9 S2^
XIN = 27 MHz
Note: ^: Internal pull-up resistor. The internal pull-up resistor
results in a default high value when no pull-down resistor is
connected to this pin.
DESCRIPTION
The ABMX0122 is a low cost integrated XO IC with
power down feature, designed to work with a
fundamental 27MHz crystal to provide the most
common audio clocks (8.192, 11.2896, 12.288,
16.9344, 16.384, 18.432, 22.5792, and 24.576MHz)
required by sampling rates of 32kHz, 44.1kHz, 48kHz,
64kHz and 96kHz (256, 384 and 512 oversampling
ratios). The wide range of audio frequencies makes it
ideal for STB and MPEG Video applications.
AUDIO CLOCK SELECTION
S2 S1 S0
ACLK (MHz)
0
0
0
8.192
0
0
1
11.2896
0
1
0
12.288
0
1
1
16.9344
1
0
0
18.432
1
0
1
16.384
1
1
0
22.5792
1
1
1
24.576
BLOCK DIAGRAM
[S2-S0]
Xin
Xout
Audio
PLL
XO
ACLK
PDOWN
27MHz
27MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
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