參數(shù)資料
型號(hào)： SAF7843HL
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(yè)數(shù)： 68/93頁(yè)
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
68 of 93
NXP Semiconductors
SAF784x
One chip CD audio device with integrated MP3/WMA decoder
AMBA AHB-compliant
Asynchronous burst mode read access from burst mode ROM and Flash devices
Asynchronous page mode read access in non-clocked memories
8-bit and 16-bit wide data paths
Independent configuration of two memory banks, with maximum access of 2 MB each
Programmable wait-state up to a maximum of 31. This parameter influences the
response times from external memory, typically access times
Programmable output-enable and write control-enable delays (15 cycles maximum)
Byte lane select outputs for eight bits or 16 bits; this can be a useful feature if access
is only required for either lower or upper bytes of data width
Little endian configuration: this has been fixed
Programmable chip-select polarity
7.2.1
SMIU operation modes
The static memory interface unit can connect to two external memories. Each of these two
memories can be accessed sequentially. The static memory interface unit consist of
memory banks that map the external memories to the main system memory address
space. The versatility of the static memory interface unit enables access to a wide range
of memory types with different memory access times.
The static memory interface unit only supports asynchronous memory types that do not
require the use of a system clock.
Each of the two memory banks is capable of supporting the following memory types:
SRAM/PSRAM
ROM
Flash EPROM
Burst ROM memory
Each of the above memories can be configured to either 8-bit or 16-bit external memory
data paths. The static memory interface unit has been configured to support only little
endian operation.
7.2.2
Selecting the memory banks
The access to the memory begins by asserting the chip-select lines to each of the two
memory banks supported.
The polarity of the chip-select lines can be programmed to be either active HIGH or active
LOW (default).
A memory bank is selected by the ARM addressing the static memory interface unit. This
is achieved on the SAF784x as follows:
ARM AHB address[27:26] = 0, 0 selects bank 0
ARM AHB address[27:26] = 0, 1 selects bank 1
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相關(guān)代理商/技術(shù)參數(shù)
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
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