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參數(shù)資料
| 型號： | SAF7847HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | One chip CD audio device with integrated MP3-WMA decoder |
| 中文描述： | COLOR SIGNAL DECODER, PQFP144 |
| 封裝： | 20 X 20 MM, 1.40 MM HEIGHT, SOT486-1, MS-026, PLASTIC, QFP-144 |
| 文件頁數(shù)： | 66/93頁 |
| 文件大小： | 396K |
| 代理商： | SAF7847HL |
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SAF784X_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 9 May 2008
66 of 93
NXP Semiconductors
SAF784x
One chip CD audio device with integrated MP3/WMA decoder
6.10 Laser interface
The laser diode pre-amp function is built in to the SAF784x and is illustrated in
Figure 37
.
The current, up to 120 mA, can be regulated in four steps ranging from 58 % up to full
power. The voltage derived from the monitor diode is maintained at a steady state by the
laser drive circuitry, regulating the current through the laser diode.
7.
ARM7 System
The following sections give a top-level description of the individual blocks.
7.1 ARM7TDMI-S microprocessor
The ARM7TDMI-S microprocessor is a member of the ARM family of 32-bit processors.
The ARM processor offers a high performance with low power consumption and low gate
count. The ARM architecture is based upon RISC. The RISC principles provide the
following key benefits:
High instruction throughput
Excellent real-time interrupt response
Fig 37. Block diagram of laser control circuit
laser power
Vmon_dac
laser_comp_out
001aag348
UP/DOWN
COUNTER
TIMING AND CONTROL LOGIC
LASER DIODE
&
MONITOR
pin MONITOR
pin LASER
laser_ion
pin LPOWER
laser_pdmin
DAC
laser_dk8MHz
laser_dk32MHz
DAC
comparator
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| SAF7849HL | One chip CD audio device with integrated MP3-WMA decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF7847HL/M201,557 | 功能描述:音頻 DSP 1 chip CD Audio Dev w/Integrated 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/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 |
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