UG298: Si5xxUC-EVB
This document describes operation of the Silicon Laboratories Si5xxUC-EVB evaluation board designed to evaluate any of Silicon Labs’ pin-controlled or I2C configurable Si5xxXOs or VCXOs. Three device sites are available to support one of either 5mm x 7mm,3.2mm x 5mm, or 2.5mm x 3.2mm devices in either 4, 6, or 8 pin configurations. Selec-tor switches make it easy to configure device control pins (pins 1, 2, 7, or 8) for properoperation without the use of jumpers. Similarly, XO device VDD voltage (3.3V, 2.5V,1.8V) can be selected via switches based on either external +5V (for stand-alone opera-tion) or micro USB sourced +5V USB operation. The EVB also features flexible output termination circuits and PCB layout optimized for superior signal integrity.
KEY FEATURES：
• Evaluation of any Silicon Labs XO orVCXO (Si51x, Si53x, Si54x, Si55x, Si56x,Si57x, Si59x)
• AC coupled differential/single-ended output clocks.
•Voltage control (Vc) port for VCXO evalution.
• Switch selectable settings. No jumpers.
• External power or USB powered.
• Use stand-alone or with our Pro-grammable Oscillator Calculator SW tool
The Si5xxUC-EVB is an evaluation board designed to support any Silicon Labs XO/VCXO device. The Si5xxUC-EVB is designed to operate in one of two general operational modes:
•Stand-alone mode: The stand-alone mode is for evaluation of fixed output frequency or pin-controlled XO/VCXO devices where I2C support is NOT required to operate or evaluate the device. Control of device pins, such as OE or FS, is done via on-board switches. In Stand-alone mode the on-board switches must be set according to the requirements of the device installed on the board. For example, if the installed device is a dual frequency part with output enable, the appropriate switches must be set to assertoutput enable (OE) and the frequency select pin (FS) to give the desired output frequency. Device VDD voltage can be set via on-board switches as well. Switch setting details for Stand-alone mode are shown in Section 4. Power Supply and I2C Bus Control(forpower supply) and Section 5. Control Signal Switch Settings(for device pins).
•Software controlled mode: The software controlled mode is for use with PC-based software tools (such as our Programmable Os-cillator Calculator Tool) to control/configure the device being evaluated via the device I2C bus. The software controlled mode is pri-marily intended for I2C controlled XO/VCXO devices. When using software controlled mode, some of the on-board switches mustbe placed in specific default settings to allow the on-board MCU to perform I2C control. Other switches must still be used on certaindevice signals, like output enable (OE). Switch setting details for software controlled mode are shown in Section 4. Power Supply and I2C Bus Control(for power supply & I2C) and Section 5. Control Signal Switch Settings(for device pins).
For each of the 3 device locations on the Si5XXUC-EVB, separate sets of SMA outputs and terminations are provided per XO “Device Under Test” (DUT) location even though only one device may be populated and used at a time (see Section 3. General Operational Restrictions below). Separate outputs and terminations per device site provides the best possible clock signal integrity for each DUT location.
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Si5xxUC-EVB 、 Si560 、 Si561 、 Si562 、 Si564 、 Si540 、 Si541 、 Si542 、 Si544 、 Si545 、 Si546 、 Si547 、 Si549 、 Si535 、 Si536 、 Si530 、 Si531 、 Si532 、 Si533 、 Si534 、 Si590 、 Si591 、 Si510 、 Si511 、 Si512 、 Si513 、 Si565 、 Si566 、 Si567 、 Si569 、 Si550 、 Si552 、 Si554 、 Si595 、 Si596 、 Si597 、 Si515 、 Si516 、 Si570 、 Si598 、 Si514 、 Si571 、 Si599 、 Si51x 、 Si53x 、 Si54x 、 Si55x 、 Si56x 、 Si57x 、 Si59x |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Rev. 0.4 |
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UG298 |
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1.5 MB |
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