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| 型号： | ADZS-BF561-EZLITE |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/64页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL ADSP-BF561 |
| 产品培训模块： | Interfacing AV Converters to Blackfin Processors Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services |
| 特色产品： | Blackfin? BF50x Series Processors |
| 标准包装： | 1 |
| 系列： | Blackfin® |
| 类型： | DSP |
| 适用于相关产品： | ADSP-BF561 |
| 所含物品： | 评估板、软件和说明文档 |
| 配用： | ADZS-USBLAN-EZEXT-ND - BOARD DAUGHTER EXTENDED USB-LAN ADZS-BFFPGA-EZEXT-ND - BOARD EVAL FPGA BLACKFIN EXTENDR ADZS-BF-EZEXT-1-ND - BOARD DAUGHTER ADSP-BF533/561KIT |
| 相关产品： | ADSP-BF561SKBCZ-6V-ND - IC DSP 32BIT 600MHZ 256CSPBGA ADSP-BF561SKBCZ-5V-ND - IC DSP 32BIT 500MHZ 256CSPBGA ADSP-BF561SKBCZ-5A-ND - IC DSP CTLR 32BIT BKFN 256CSPBGA ADSP-BF561SKBCZ-6A-ND - IC DSP CTRLR 32B 600MHZ 256CPBGA ADSP-BF561SBBCZ-5A-ND - IC DSP CTRLR 32B 500MHZ 256CPBGA ADSP-BF561SBBZ500-ND - IC PROCESSOR 500MHZ 297-PBGA ADSP-BF561SBBZ600-ND - IC DSP 32BIT 600MHZ 297-BGA ADSP-BF561SKBZ600-ND - IC DSP 32BIT 600MHZ 297PBGA ADSP-BF561SKBZ500-ND - IC DSP 32BIT 500MHZ 297PBGA ADSP-BF561SKB600-ND - IC DSP CTRLR 32BIT 600MHZ 297BGA 更多... |
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ADSP-BF561
regulator for the processor can be shut off by writing b#00 to the
FREQ bits of the VR_CTL register. This disables both CCLK
and SCLK. Furthermore, it sets the internal power supply volt-
age (V DDINT ) to 0 V to provide the lowest static power dissipation.
Any critical information stored internally (memory contents,
register contents, etc.) must be written to a nonvolatile storage
device prior to removing power if the processor state is to be
preserved. Since V DDEXT is still supplied in this mode, all of the
external pins three-state, unless otherwise specified. This allows
other devices that may be connected to the processor to have
power still applied without drawing unwanted current. The
interna l supply regulator can be woken up by asserting the
RESET pin.
Power Savings
As shown in Table 4 , the ADSP-BF561 supports two different
power domains. The use of multiple power domains maximizes
flexibility, while maintaining compliance with industry stan-
dards and conventions. By isolating the internal logic of the
ADSP-BF561 into its own power domain, separate from the I/O,
the processor can take advantage of Dynamic Power Manage-
ment, without affecting the I/O devices. There are no
sequencing requirements for the various power domains.
Table 4. ADSP-BF561 Power Domains
t NOM is the duration running at f CCLKNOM
t RED is the duration running at f CCLKRED
The percent power savings is calculated as:
% power savings = ( 1 – power savings factor ) × 100%
VOLTAGE REGULATION
The ADSP-BF561 processor provides an on-chip voltage regula-
tor that can generate appropriate V DDINT voltage levels from the
V DDEXT supply. See Operating Conditions on Page 20 for regula-
tor tolerances and acceptable V DDEXT ranges for specific models.
complete the power management system. The regulator con-
trols the internal logic voltage levels and is programmable with
the voltage regulator control register (VR_CTL) in increments
of 50 mV. To reduce standby power consumption, the internal
voltage regulator can be programmed to remove power to the
processor core while keeping I/O power (V DDEXT ) supplied. While
in the hibernate state, V DDEXT can still be applied, thus eliminating
the need for external buffers. The voltage regulator can be acti-
vated from this power-down state by asserting RESET, which
will then initiate a boot sequence. The regulator can also be dis-
abled and bypassed at the user’s discretion.
The internal voltage regulation feature is not available on any of
Power Domain
All internal logic
I/O
V DD Range
V DDINT
V DDEXT
the 600 MHz speed grade models or automotive grade models.
External voltage regulation is required to ensure correct opera-
tion of these parts at 600 MHz.
The power dissipated by a processor is largely a function of the
clock frequency of the processor and the square of the operating
V DDEXT
(LOW-INDUCTANCE)
SET OF DECOUPLING
CAPACITORS
voltage. For example, reducing the clock frequency by 25%
results in a 25% reduction in dynamic power dissipation, while
reducing the voltage by 25% reduces dynamic power dissipation
100μF
+
V DDEXT
by more than 40%. Further, these power savings are additive, in
100nF
10μH
that if the clock frequency and supply voltage are both reduced,
the power savings can be dramatic.
100μF
+
+
V DDINT
The dynamic power management feature of the ADSP-BF561
allows both the processor’s input voltage (V DDINT ) and clock fre-
quency (f CCLK ) to be dynamically controlled.
10μF
LOW ESR
FDS9431A
ZHCS1000
100μF
VR OUT
The savings in power dissipation can be modeled using the
= --------------------- × ? ? -------------------------- ? ? × ?? ----------- ??
power savings factor and % power savings calculations.
The power savings factor is calculated as:
power savings factor
f CCLKRED V DDINTRED 2 t RED
f CCLKNOM V DDINTNOM t NOM
where the variables in the equations are:
f CCLKNOM is the nominal core clock frequency
f CCLKRED is the reduced core clock frequency
V DDINTNOM is the nominal internal supply voltage
V DDINTRED is the reduced internal supply voltage
SHORT AND LOW-
INDUCTANCE WIRE
NOTE: DESIGNER SHOULD MINIMIZE
TRACE LENGTH TO FDS9431A.
Figure 4. Voltage Regulator Circuit
Voltage Regulator Layout Guidelines
Regulator external component placement, board routing, and
bypass capacitors all have a significant effect on noise injected
into the other analog circuits on-chip. The VROUT1–0 traces
and voltage regulator external components should be consid-
ered as noise sources when doing board layout and should not
VR OUT
GND
be routed or placed near sensitive circuits or components on the
Rev. E |
Page 12 of 64 |
September 2009
相关PDF资料 |
PDF描述 |
|---|---|
| ADZS-BF592-EZLITE | KIT EVAL EZ LITE ADZS-BF592 |
| ADZS-BF609-EZBRD | KIT EVAL EZ-BOARD ADSP-BF60X |
| ADZS-HPUSB-ICE | TOOL EMULATOR USB HP CROSSCORE |
| ADZS-ICE-100B | EMULATOR BLACKFIN |
| AK-Y1301 | CABLE SCSI-3 EXTENSION 68CONDUCT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADZS-BF561-MMSKIT | 功能描述:KIT STARTER MULTIMEDIA BF561 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:Blackfin® 标准包装:1 系列:PICDEM™ 类型:MCU 适用于相关产品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，线缆，元件，CD，PICkit 编程器 产品目录页面:659 (CN2011-ZH PDF) |
| ADZS-BF561-MMSKIT | 制造商:Analog Devices 功能描述:MEDIA KIT ((NW)) |
| ADZS-BF592-EZLITE | 功能描述:KIT EVAL EZ LITE ADZS-BF592 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:Blackfin® 产品培训模块:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色产品:Blackfin? BF50x Series Processors 标准包装:1 系列:Blackfin® 类型:DSP 适用于相关产品:ADSP-BF548 所含物品:板，软件，4x4 键盘，光学拨轮，QVGA 触摸屏 LCD 和 40G 硬盘 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相关产品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| ADZS-BF592-EZLITE | 制造商:Analog Devices 功能描述:ADZS-BF592-EZLITE |
| ADZS-BF608-EZLITE | 制造商:Analog Devices 功能描述:DIGITAL SIGNAL PROCESSOR - DEVELOPMENT TOOL |
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