SI52144 SILABS [Silicon Laboratories], SI52144 Datasheet

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... Multi-function printer  Description The Si52144 is a spread-controlled PCIe clock generator that can source four PCIe clocks simultaneously. The device has four hardware output enable control inputs for enabling the respective differential outputs on the fly while powered on along with the spread control hardware pin to enable spread for EMI reduction ...

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... Si52144 2 Preliminary Rev. 0.1 ...

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... Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.1. Crystal Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.2. OE Clarification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 2.3. OE Assertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 2.4. OE Deassertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 2.5. SSON Clarification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3. Test and Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 4. Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.1. Serial Data Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.2. Data Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5. Pin Descriptions: 24-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Preliminary Rev. 0.1 Si52144 Page 3 ...

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... Si52144 1. Electrical Specifications Table 1. DC Electrical Specifications Parameter Symbol 3.3 V Operating Voltage VDD core 3.3 V Input High Voltage 3.3 V Input Low Voltage Input High Voltage V Input Low Voltage V Input High Leakage Current Input Low Leakage Current 3.3 V Output High Voltage (SE) 3.3 V Output Low Voltage (SE) ...

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... Td=12 ns), High Band, 1.5 MHz < F < Nyquist Includes PLL BW 2–4 MHz, GEN3 CDR = 10 MHz) Measured differential ACC /T Measured differentially from R F ±150 mV HIGH LOW Preliminary Rev. 0.1 Si52144 Min Typ Max — — 250 47 — 53 and 0.5 — 4.0 DD — — 250 — ...

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... Si52144 Table 3. Absolute Maximum Conditions Parameter Main Supply Voltage Input Voltage Temperature, Storage Temperature, Operating Ambient Temperature, Junction Dissipation, Junction to Case Dissipation, Junction to Ambient ESD Protection (Human Body Model) Flammability Rating Moisture Sensitivity Level Note: While using multiple power supplies, the voltage on any input or I/O pin cannot exceed the power pin during power-up. ...

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... Trim capacitors are calculated to provide equal capacitive loading on both sides. Table 4. Crystal Recommendations Shunt Motional Cap (max) (max) 12– 0.016 pF Figure 2. Crystal Loading Example Preliminary Rev. 0.1 Si52144 Tolerance Stability Aging (max) (max) (max) 35 ppm 30 ppm 5 ppm 7 ...

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... Si52144 Use the following formulas to calculate the trim capacitor values for Ce1 and Ce2. Load Capacitance (each side – (Cs + Ci) Total Capacitance (as seen by the crystal CLe ( 1 + Ce1 + Cs1 + Ci1 Ce2 + Cs2 + Ci2 CL: Crystal load capacitance  CLe: Actual loading seen by crystal using standard value trim capacitors  ...

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... Figure 3. 0.7 V Differential Load Configuration Figure 4. Differential Measurement for Differential Output Signals 0 0 (for AC Parameters Measurement) Preliminary Rev. 0.1 Si52144 ...

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... Si52144 V MIN Figure 5. Single-Ended Measurement for Differential Output Signals 10 = –0.30V V = –0.30V MIN (for AC Parameters Measurement) Preliminary Rev. 0.1 ...

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... Acknowledge from slave 37:30 Byte Count from slave—8 bits 38 Acknowledge 46:39 Data byte 1 from slave—8 bits 47 Acknowledge 55:48 Data byte 2 from slave—8 bits 56 Acknowledge .... Data bytes from slave/Acknowledge .... Data Byte N from slave—8 bits .... NOT Acknowledge .... Stop Preliminary Rev. 0.1 Si52144 Description 11 ...

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... Si52144 Table 6. Byte Read and Byte Write Protocol Byte Write Protocol Bit Description 1 Start 8:2 Slave address–7 bits 9 Write 10 Acknowledge from slave 18:11 Command Code–8 bits 19 Acknowledge from slave 27:20 Data byte–8 bits 28 Acknowledge from slave 29 Stop 12 Byte Read Protocol Bit ...

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... Bit D7 D6 Name R/W R/W Type Reset settings = 00000101 Bit Name 7:3 Reserved 2 DIFF0_OE Output Enable for DIFF0. 0: Output disabled. 1: Output enabled. 1 Reserved 0 DIFF1_OE Output Enable for DIFF1. 0: Output disabled. 1: Output enabled R/W R/W R/W Function R/W R/W R/W Function Preliminary Rev. 0.1 Si52144 R/W R/W R DIFF0_OE DIFF1_OE R/W R/W R/W 13 ...

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... Si52144 Register 2. Byte 2 Bit D7 D6 DIFF2_OE DIFF3_OE Name R/W R/W Type Reset settings = 11000000 Bit Name 7 DIFF2_OE Output Enable for DIFF2. 0: Output disabled. 1: Output enabled. 6 DIFF3_OE Output Enable for DIFF3. 0: Output disabled. 1: Output enabled. 5:0 Reserved Register 3. Byte 3 Bit D7 D6 Rev Code[3:0] Name R/W R/W Type ...

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... Reserved D5 R/W Function Amplitude Control for DIFF Differential Outputs. 0: Differential outputs with Default amplitude. 1: Differential outputs amplitude is set by Byte 5[6:4]. DIFF Differential Outputs Amplitude Adjustment. 000: 300 mV 001: 400 mV 010: 500 mV 100: 700 mV 101: 800 mV 110: 900 mV Preliminary Rev. 0.1 Si52144 R/W R/W R/W R/W R/W 011: 600 mV ...

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... Si52144 5. Pin Descriptions: 24-Pin QFN VDD OE1 2 SSON 3 4 VSS 1 5 OE2 VDD 6 Notes: 1. Internal 100 kohm pull-up. 2. Internal 100 kohm pull-down. Table 7. Si52144 24-Pin QFN Descriptions Pin # Name Type PWR 3.3 V power supply 1,6 VDD I,PU 2 OE1 I,PD 3 SSON GND Ground 4 VSS I,PU 5 OE2 I,PU ...

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... Table 7. Si52144 24-Pin QFN Descriptions Pin # Name Type PWR 3.3 V power supply 12 VDD O, DIF 0.7 V, 100 MHz differential clock 13 DIFF2 O, DIF 0.7 V, 100 MHz differential clock 14 DIFF2 O, DIF 0.7 V, 100 MHz differential clock 15 DIFF3 O, DIF 0.7 V, 100 MHz differential clock 16 DIFF3 PWR 3.3 V power supply 17 VDD I,PU 18 OE3 ...

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... Si52144 6. Ordering Guide Part Number Lead-free Si52144-A01AGM Si52144-A01AGMR 18 Package Type 24-pin QFN 24-pin QFN—Tape and Reel Preliminary Rev. 0.1 Temperature Industrial, – C Industrial, – C ...

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... All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing per ANSI Y14.5M-1994. 3. This drawing conforms to JEDEC outline MO-220, variation VGGD-8. 4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components. Millimeters Min Nom Max 0.70 0.75 0.80 0.00 0.025 0.05 0.20 0.25 0.30 4.00 BSC 2.60 2.70 2.80 0.50 BSC 4.00 BSC 2.60 2.70 2.80 0.30 0.40 0.50 0.10 0.10 0.08 0.07 Preliminary Rev. 0.1 Si52144 19 ...

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... Si52144 C I ONTACT NFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. ...