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SRC4190-Q1 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
封装:
SSOP-28
描述:
汽车类 192kHz 立体声异步采样速率转换器
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封装信息在P1P27
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SRC4190-Q1数据手册
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MODE [2:0]
IFMT [2:0]
OFMT [1:0]
OWL [1:0]
MUTE
BYPAS
LGRP
RST
Control
Logic
Rate
Estimator
LRCKI
LRCKO
REFCLK
RDY
LRCKO
BCKO
SDOUT
TDMI
Audio
Output
Port
RCKI REFCLK
Reference
Clock
LRCKI
BCKI
SDIN
Audio
Input
Port
Interpolation
Filters
16f
SIN
f
SIN
f
SOUT
V
DD
DGND
V
IO
DGND
Re-Sampler
16f
SOUT
Decimation
Filters
Power
t
RCKIP
t
RCKIH
t
RCKIL
RCKI
SRC4190
RCKI
From External
Clock Source
50MHz max
2
t
RCKIP
> 20ns min
t
RCKIH
> 0.4 t
RCKIP
t
RCKIL
> 0.4 t
RCKIP
SRC4190-Q1
www.ti.com
SBFS034A –SEPTEMBER 2008–REVISED OCTOBER 2009
Figure 1. Functional Block Diagram
Reference Clock
The SRC4190 requires a reference clock for operation. The reference clock is applied at the RCKI input, pin 2.
Figure 2 illustrates the reference clock connections and requirements for the SRC4190. The reference clock may
operate at 128f
S
, 256f
S
, or 512f
S
, where f
S
is the input or output sampling frequency. The maximum external
reference clock input frequency is 50 MHz.
Figure 2. Reference Clock Input Connections and Timing Requirements
Copyright © 2008–2009, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Link(s): SRC4190-Q1
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