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| 型號(hào)： | SAF7849HL |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 存儲(chǔ)器 |
| 英文描述： | One chip CD audio device with integrated MP3-WMA decoder |
| 封裝： | SAF7843HL/M295<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.html<1<Always Pb-free,;SAF7849HL/M245<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.h |
| 文件頁數(shù)： | 45/93頁 |
| 文件大?。?/td> | 396K |
| 代理商： | SAF7849HL |
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SAF784X_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 9 May 2008
45 of 93
NXP Semiconductors
SAF784x
One chip CD audio device with integrated MP3/WMA decoder
When slave mode is used (no I
2
S bclk gating), it is also possible to use the I
2
S subO (V4)
output port as a true single-line interface. In this case the receiver needs to sample the
data on the line at a frequency I
2
S wclk
×
2 (Hz) (since subcode is output at a rate of 1-bit
or half I
2
S wclk). Two characteristics of the interface can be used in this case to
synchronize the bit and byte detection in the stream in absence of an I
2
S sync signal.
The first bit (P-bit) of a subcode byte is used as a start bit and therefore always 1, (no
real P-channel information available on the interface); between two subcode bytes
there are four zero bits. This can be used to identify the start of the subcode bytes
within the stream.
The subcode syncs S0 and S1 are presented as all zeroes on the interface (even
P-channel), such that the last subcode byte of a subcode frame, and the first byte of
the next frame are separated by 28 zero bits. This can be used to identify the start of
the subcode frames within the stream.
6.5.10
Motor
A block diagram of the motor interface is given in
Figure 26
.
Fig 25. Subcode output (upsampling enabled)
001aag329
wclk
V4
V4_sync
b[7] = start
2
×
U.S. wclk periods
(0.5
×
Non-U.S. wclk period)
24
×
U.S. wclk periods
(6
×
Non-U.S. wclk periods)
b[6]
S0
S1
b[5]
b[7] = start
b[6]
S0
Fig 26. Motor servo block diagram
001aag330
0
tacho frequency
frequency/tacho
set point
sw1
GE
analog output stage gain
+
PLL frequency
FIFO
filling
M
filling
set point
+
PDM/PWM
modulator
INT
KI
Ki_mult
K
F
Kf_mult
preset/
read back
24T delay
G
overflow detect
MOTOn
pins
sw2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF7849HL/M245,557 | 功能描述:音頻 DSP IC AUD DECODER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7849HL/M295,557 | 功能描述:音頻 DSP IC AUD DECODER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7860HL/M2,557 | 制造商:NXP Semiconductors 功能描述:DSP |
| SAF82520PVB2 | 制造商:SIEMENS 功能描述:New |
| SAF82525 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Data Communications ICs |
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