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Table of Contents
1
Introduction ......................................................................................................................................................................... 2
2
Features .............................................................................................................................................................................. 2
3
Functional Description ......................................................................................................................................................... 3
3.1. VDD,VDDIN and VDDO Power Supplies ................................................................................................................. 3
3.2. Functional Table ...................................................................................................................................................... 3
4
Power Supply Connections ................................................................................................................................................. 4
5
Input Clock Configuration .................................................................................................................................................... 4
6
Output Clock ....................................................................................................................................................................... 6
7
SMBUS Communication ...................................................................................................................................................... 6
8
Switch and Control Inputs ................................................................................................................................................... 6
9
SMBUS Address ................................................................................................................................................................. 8
9.1. SMBUS Address setting .......................................................................................................................................... 8
10
EVK Snapshot ..................................................................................................................................................................... 9
SiT92315EB User Manual | Rev 0.5
SiT92315 Evaluation Board (EVB) HW
User Manual
Page 1 of 10
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Summary of Contents for SiTime SiT92315
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Page 1: Table Of Contents
SiT92315 Evaluation Board (EVB) HW User Manual Table of Contents Introduction ..................................2 Features ....................................2 Functional Description ................................. 3 3.1. VDD,VDDIN and VDDO Power Supplies ......................... 3 3.2. Functional Table ..............................3 Power Supply Connections ..............................4 Input Clock Configuration ..............................4 Output Clock .................................. -
Page 2: Introduction
SiT92315 Evaluation Board (EVB) HW User Manual 1 Introduction The SiT92315 Evaluation Board is designed for evaluating the SiT92315, a HCSL-LP, 20 Output differential Fan-Out buffer, that meets or exceeds all the performance requirements of the Intel DB2000QL specification. Figure 1. SiT92315 EVK Board 2 Features HCSL-LP outputs with Zo = 85 Ω. -
Page 3: Functional Description
3 Functional Description The SiT92315 is a HCSL Low-Power 20-output differential clock fan out buffer with low additive jitter that can operate up to 400 MHz. Outputs can be controlled through OE pins, SMBUS or SBI. The device is offered in a 80-pin LGA package. -
Page 4: Power Supply Connections
Connect the USB cable from PC/laptop USB port to the USB receptacle of the EVK. User can see the LED’s D4 and D5 glowing after connecting the USB. SiT92315 will power up with VDD = VDDIN = VDDO = 3.3 V using onboard LDO’s. - Page 5 SiT92315 Evaluation Board (EVB) HW User Manual Figure 3. Input Clock Configuration SiT92315EB User Manual | Rev 0.5 Page 5 of 10 www.sitime.com...
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Page 6: Output Clock
85 Ω differential impedance. Figure 4. Output Clock Configuration 7 SMBUS Communication SiT92315 GUI can be used for SMBUS and SBI Communication. Please refer to GUI user guide. 8 Switch and Control Inputs Default EVK configuration is done for GUI interface. Please follow Table 3 for connections. - Page 7 SiT92315 Evaluation Board (EVB) HW User Manual Table 5. Miscellaneous Jumper Settings Jumper Default EVK Functionality with default Other Functionality with other Jumper Name configuration configuration Configuration configuration FTDI_5V Short pins 1,2 Connect to USB_5V Short pins 2,3 External Supply connected at H3...
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Page 8: Smbus Address
SiT92315 Evaluation Board (EVB) HW User Manual 9 SMBUS Address SADR0_TRI and SADR1_TRI are the SMBUS address strap pins. There are two 3 level input decoding on these pads.. Table 6. SMBUS Address SADR1_TRI SADR0_TRI SMBus Address (J85) (J82) HIGH... -
Page 9: Evk Snapshot
SiT92315 Evaluation Board (EVB) HW User Manual 10 EVK Snapshot Figure 5. EVK Snapshot SiT92315EB User Manual | Rev 0.5 Page 9 of 10 www.sitime.com... - Page 10 © SiTime Corporation February 2024. The information contained herein is subject to change at any time without notice. SiTime assumes no responsibility or liability for any loss, damage or defect of a Product which is caused in whole or in part by (i) use of any circuitry other than circuitry embodied in a SiTime product, (ii) misuse or abuse including static discharge, neglect or accident, (iii) unauthorized modification or repairs which have been soldered or altered during assembly and are not capable of being tested by SiTime under its normal test conditions, or (iv) improper installation, storage, handling, warehousing or transportation, or (v) being subjected to unusual physical, thermal, or electrical stress.
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