Datasheet 5L1503 (IDT) - 4

link to page 7 5L1503 Datasheet
Pin Descriptions Table 1. Pin Descriptions Number Name Type Description
OUT1 Output Enable Pin. The pin can be configured to other functions (DFC and PPS) refer 1 OE1 Input to OE Pin Function table. 2 OUT1 Output Programmable LVCMOS clock output (32.768kHz only on 5L1503L). 3 VDD Power 1.8V power supply for core, PLL and 32kHZ DCO. 4 X2 Output Crystal oscillator interface output. 5 X1/CLKIN Input Crystal oscillator interface input or single-ended LVCMOS clock input. 6 VSS GND Connect to ground. 7 OUT3 Output Programmable LVCMOS clock output. 8 VDDO Power 1.8V power supply for I/O. 9 OE2 Input OUT2 output enable pin. The pin can be configured to other functions (DFC, PPS). 10 OUT2 Output Programmable LVCMOS clock output.
Device Feature and Function DFC – Dynamic Frequency Control
▪ OTP programmable–4 different feedback fractional dividers (4 VCO frequencies) that apply to PLL. ▪ ORT (overshoot reduction) function will be applied automatical y during the VCO frequency change. ▪ Smooth frequency incremental or decremental from current VCO to targeted VCO based on DFC hardware pins selection.
Figure 2. DFC Function Block Diagram
M divider PLL OUT DIV Selector 00 N divider 01 N divider 10 N divider 11 N divider DFC[1:0] OTP/I2C ©2019 Integrated Device Technology, Inc 4 June 19, 2019 Document Outline Description Typical Applications Features Output Features Key Specifications Block Diagram Pin Assignments Figure 1. Pin Assignments for 2.0 × 2.0 mm 10-VFQFPN Package Pin Descriptions Table 1. Pin Descriptions Device Feature and Function DFC – Dynamic Frequency Control Figure 2. DFC Function Block Diagram Table 2. DFC Function Priority DFC Function Programming PPS – Proactive Power Saving Function Figure 3. PPS Function Block Diagram Figure 4. PPS Assertion/Deassertion Timing Chart PPS Function Programming Output Divider Selection Table 3. Output Divider Selection Device Output Support 5L1503 5L1503L 5L1503S OE Pin Function Table 4. OE Pin Function Table 5. OE Pin Function Summary Table 6. PD# Priority Spread Spectrum Spread Spectrum Digital Spread Spectrum Figure 5. Digital Spread Spectrum Reference Input and Selection Crystal Input (X1/X2) Table 7. Programmable Tuning Capacitors Figure 6. Crystal Oscillator Reference Circuit Absolute Maximum Ratings Table 8. Absolute Maximum Ratings Thermal Characteristics Table 9. Thermal Characteristics Recommended Operating Conditions Table 10. Recommended Operating Conditions Crystal Characteristics Table 11. Crystal Characteristics DC Electrical Characteristics Table 12. DC Electrical Characteristics – Current Table 13. DC Electrical Characteristics – Input and Output Voltage AC Electrical Characteristics Table 14. AC Timing Electrical Characteristics I2C Bus DC Characteristics Table 15. I2C Bus DC Characteristics Table 16. I2C Bus AC Characteristics Spread Spectrum Generation Specifications Table 17. Spread Spectrum Generation Specifications (5L1503S only) General I2C Interface Information How to Write How to Read Glossary of Features Table 18. Glossary of Features Package Outline Drawings Ordering Information Marking Diagrams Revision History