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| 型號： | MSC7116VF1000 |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC |
| 中文描述： | 低成本16位數(shù)字信號處理器與DDR控制器和10/100 Mbps以太網(wǎng)MAC |
| 文件頁數(shù)： | 42/56頁 |
| 文件大?。?/td> | 719K |
| 代理商： | MSC7116VF1000 |
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MSC7116 10/100 Mbps Ethernet MAC Data Sheet, Rev. 11
Hardware Design Considerations
Freescale Semiconductor
42
3.2
Power Supply Design Considerations
This section outlines the MSC7116 power considerations: power supply, power sequencing, power planes, decoupling, power
supply filtering, and power consumption. It also presents a recommended power supply design and options for low-power
consumption. For information on AC/DC electrical specifications and thermal characteristics, refer to
Section 2
.
Power Supply
. The MSC7116 requires four input voltages, as shown in
Table 32
.
You should supply the MSC7116 core voltage via a variable switching supply or regulator to allow for compatibility
with possible core voltage changes on future silicon revisions. The core voltage is supplied with 1.2 V (+5% and –10%)
across V
DDC
and
GND
and the I/O section is supplied with 3.3 V (± 10%) across V
DDIO
and
GND.
The memory and
reference voltages supply the DDR memory controller block. The memory voltage is supplied with 2.5 V across V
DDM
and
GND
. The reference voltage is supplied across V
REF
and
GND
and must be between 0.49
×
V
DDM
and 0.51
×
V
DDM
. Refer to the JEDEC standard JESD8 (
Stub Series Terminated Logic for 2.5 Volts
(STTL_2)) for memory
voltage supply requirements.
Power sequencing
. One consequence of multiple power supplies is that the voltage rails ramp up at different rates when
power is initially applied. The rates depend on the power supply, the type of load on each power supply, and the way
different voltages are derived. It is extremely important to observe the power up and power down sequences at the
board level to avoid latch-up, forward biasing of ESD devices, and excessive currents, which all lead to severe device
damage. The correct power-up sequence is as follows:
— Turn on the highest supply first (3.3 V).
— Turn on the 2.5 V supply.
— Turn on the lowest supply last (1.2 V).
The correct power-down sequence is as follows:
— Turn off the lowest supply first (1.2 V).
— Turn off the 2.5 V supply.
— Turn off the highest supply last (3.3 V).
At any instant during power-up and power-down, the 2.5 V supply must maintain a differential of +0.7 V or more
below the 3.3 V supply. Also, at any instant, the 1.2 V supply must maintain a differential of +0.7 V or more below the
2.5 V supply, as shown in
Figure 30
. The power-down sequence is not as critical as the power-up sequence.
Table 32. MSC7116 Voltages
Voltage
Symbol
Value
Core
V
DDC
1.2 V
Memory
V
DDM
2.5 V
Reference
V
REF
1.25 V
I/O
V
DDIO
3.3 V
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSC7116VM1000 | 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 7116 STARLITE - PBF RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| MSC7116VM800 | 功能描述:IC DSP PROCESSOR 16BIT 400MAPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:StarCore 標準包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI，以太網(wǎng)，RS-232 時鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA，F(xiàn)CBGA 供應商設備封裝:431-FCPBGA（20x20） 包裝:托盤 |
| MSC7118 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Low-Cost 16-bit DSP with DDR Controller |
| MSC7118VF1200 | 功能描述:DSP 16BIT W/DDR CTRLR 400-MAPBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:StarCore 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
| MSC7118VM1200 | 功能描述:DSP 16BIT W/DDR CTRLR 400-MAPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:StarCore 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
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