- 您现在的位置：买卖IC网 > Datasheet目录366 > TMDXEVM5515 (Texas Instruments)EVAL MODULE DSP FOR C55XX Datasheet资料下载
参数资料
| 型号： | TMDXEVM5515 |
| 厂商： | Texas Instruments |
| 文件页数： | 52/159页 |
| 文件大小： | 0K |
| 描述： | EVAL MODULE DSP FOR C55XX |
| 标准包装： | 1 |
| 类型： | DSP |
| 适用于相关产品： | TMS320C55x 系列 |
| 所含物品： | 板，线缆，CD，电源 |
| 产品目录页面： | 718 (CN2011-ZH PDF) |
| 其它名称： | 296-25753 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页当前第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
3.3
3.3.1
Clock Considerations
The system clock, which is used by the CPU and most of the DSP peripherals, is controlled by the system
clock generator. The system clock generator features a software-programmable PLL multiplier and several
dividers. The clock generator accepts an input reference clock from the CLKIN pin or the output clock of
the 32.768-KHz real-time clock (RTC) oscillator. The selection of the input reference clock is based on the
state of the CLK_SEL pin. The CLK_SEL pin is required to be statically tied high or low and cannot
change dynamically after reset.
In addition, the DSP requires a reference clock for USB applications. The USB reference clock is
generated using a dedicated on-chip oscillator with a 12-MHz external crystal connected to the USB_MXI
and USB_MXO pins.
The USB reference clock is not required if the USB peripheral is not being used. To completely disable the
USB oscillator, connect the USB_MXI pin to ground (V SS ) and leave the USB_MXO pin unconnected. The
USB oscillator power pins (USB_V DDOSC and USB_V SSOSC ) should also be connected to ground.
The RTC oscillator generates a clock when a 32.768-KHz crystal is connected to the RTC_XI and
RTC_XO pins. The 32.768-KHz crystal can be disabled if CLKIN is used as the clock source for the DSP.
However, when the RTC oscillator is disabled, the RTC peripheral will not operate and the RTC registers
(I/O address range 1900h – 197Fh) will not be accessible. This includes the RTC power management
register (RTCPMGT) which controls the RTCLKOUT and WAKEUP pins. To disable the RTC oscillator,
connect the RTC_XI pin to CV DDRTC and the RTC_XO pin to ground.
For more information on crystal specifications for the RTC oscillator and the USB oscillator, see
Clock Configurations After Device Reset
After reset, the on-chip Bootloader programs the system clock generator based on the input clock selected
via the CLK_SEL pin. If CLK_SEL = 0, the Bootloader programs the system clock generator and sets the
system clock to 12.288 MHz (multiply the 32.768-kHz RTC oscillator clock by 375). If CLK_SEL = 1, the
Bootloader bypasses the system clock generator altogether and the system clock is driven by the CLKIN
pin. In this case, the CLKIN frequency is expected to be 11.2896 MHz, 12.0 MHz, or 12.288 MHz. While
the bootloader tries to boot from the USB, the clock generator will be programmed to output approximately
36 MHz.
3.3.1.1
Device Clock Frequency
After the boot process is complete, the user is allowed to re-program the system clock generator to bring
the device up to the desired clock frequency and the desired peripheral clock state (clock gating or not).
The user must adhere to various clock requirements when programming the system clock generator. For
more information, see Section 5.5 , Clock PLLs .
Note: The on-chip Bootloader allows for DSP registers to be configured during the boot process.
However, this feature must not be used to change the output frequency of the system clock generator
during the boot process. Timer0 is also used by the bootloader to allow for 200 ms of BG_CAP settling
time. The bootloader register modification feature must not modify the Timer0 registers.
52
Device Configuration
Product Folder Links: TMS320C5515
Copyright ? 2010–2013, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| TMDXEXP1808L | KIT EXPERIMENTER FOR AM180X |
| TO263-3EV-VREG | BOARD EVAL TO220-3/TO263-3 VREG |
| TO263-5EV-VREG | EVAL BOARD VREG TO220-5/TO263-5 |
| TOOLSTICK-EK | KIT TOOL EVAL SYS IN A USB STICK |
| TPS23757EVM | EVALUATION MODULE FOR TPS23757 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TMDXEVM5515 | 制造商:Texas Instruments 功能描述:TMS320C5515 DSP Evaluation Module |
| TMDXEVM642 | 制造商:Texas Instruments 功能描述:Tools Development kit For Use |
| TMDXEVM6424 | 功能描述:开发板和工具包 - TMS320 C6424 DSP Eval Mod RoHS:否 制造商:Texas Instruments 产品:Experimenter Kits 工具用于评估:F2802x 核心:TMS320 接口类型:UART, USB 工作电源电压: |
| TMDXEVM6446 | 制造商:Rochester Electronics LLC 功能描述:DAVINCI EVM BUNDLE W/O EMULATOR - Bulk 制造商:Texas Instruments 功能描述:DAVINCI EVM BUNDLE W/O EMULATOR - Bulk |
| TMDXEVM6446T | 制造商:Texas Instruments 功能描述:DM6446 DIGITAL VIDEO EVALUATION MODULE - Boxed Product (Development Kits) |
发布紧急采购，3分钟左右您将得到回复。