參數(shù)資料
型號: SAF7843HL
廠商: NXP Semiconductors N.V.
元件分類: 存儲器
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): 66/93頁
文件大?。?/td> 396K
代理商: SAF7843HL
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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參數(shù)描述
SAF7843HL/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
SAF7846HL/M210,557 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
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