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EVM Hardware
Default setting: J3 and J4 are not used.
Note:
S0 and S1 are logic high due to their internal pull-up resistors if J3 and J4 are not used.
3.2.3
Programming Interfaces (J1, J5)
To enhance the flexibility and function of the clock synthesizer, a two-signal serial interface is provided. It
follows the SMBus specification Version 2.0, which is based upon the principals of operation of I 2 C. More
details of the SMBus specification can be found at http://www.smbus.org .
Through the SMBus, various device functions, such as individual clock output buffers, can be individually
enabled or disabled. The registers associated with the SMBus data interface initialize to their default
setting, written in the EEPROM, upon power-up and therefore using this interface is optional. Clock device
register changes are normally made upon system initialization, if any are required. There are two ways to
program the device externally.
?
?
Connect the parallel port cable to PC and EVM parallel port. This needs the TI Pro Clock Software(
see section 4)
By external pattern generator connected to J5 (it is not possible to detect an acknowledge at J5)
Note:
The shield of the parallel cable should be connected to both cable plugs.
3.2.4
3.2.5
Crystal, Differential or LVCMOS Input (J2)
The CDCE906/CDCE706 can use a crystal, a differential, or a LVCMOS input signal. The CDCE906/E706
programming EVM makes possible the functional testing of the device for all three input configurations.
This is done by providing a single-ended clock to CLK_IN0. CLK_IN1 is biased to Vcc/2, which offers the
option to test the differential input with a single-ended clock provided to J2.
Default settings: LVCMOS Input at CLK_IN0.
LVCMOS Outputs (TP0 –TP5)
The CDCE906/CDCE706 drives up to six LVCMOS outputs. Test points are available on the board for a
functional test after programming the device. Every test point consists of a signal and a GND pad for fast
and easy testing with a high impedance probe.
8
CDCE906/CDCE706 Programming Evaluation Module
SCAU017B – August 2006 – Revised August 2007
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相关代理商/技术参数
CDCE906-706ProgEVM 功能描述:时钟和定时器开发工具 HEADPHONE DRIVER RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V
CDCE906PW 功能描述:时钟合成器/抖动清除器 Programmable 3-PLL Clock Synth/Mul/Dvdr RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
CDCE906PW 制造商:Texas Instruments 功能描述:CLOCK DRIVER 制造商:Texas Instruments 功能描述:IC PLL CLOCK SYNTHESIZER 167MHZ TSSOP-20
CDCE906PWG4 功能描述:时钟合成器/抖动清除器 Programmable 3-PLL Clock Synth/Mul/Dvdr RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
CDCE906PWR 功能描述:时钟合成器/抖动清除器 Programmable 3-PLL Clock Synth/Mul/Dvdr RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
CDCE906PWRG4 功能描述:时钟合成器/抖动清除器 Programmable 3-PLL Clock Synth/Mul/Dvdr RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
CDCE906R005PWR 制造商:Texas Instruments 功能描述:
CDCE906R007PWR 制造商:Texas Instruments 功能描述: