PI6C49015LIE

PI6C49015 Embedded Clock Generator Features Description ÎÎ3.3V ±10% supply voltage The PI6C49015 is a high performance networking clock generator which generates PCIe 2.0 Compliant 100MHz HCSL clock signals along with two LVCMOS 25MHz clock from either 25MHz crystal or reference input. This integrated solution is ideal for Networking, Embedded systems and other systems that require PCIe 1.0 and 2.0 HCSL signals and 25MHz clocks yet small foot print. ÎÎ25MHz XTAL or reference clock input ÎÎFive PCIe® 2.0 Compliant 100MHz selectable HCSL outputs with -0.5% spread – default is spread off ÎÎTwo 25MHz LVCMOS output ÎÎIndustrial temperature range: -40°C to 85°C ÎÎ Packaging (Pb free and Green) Applications àà TSSOP 28 (L) ÎÎNetworking systems ÎÎEmbedded systems ÎÎOther Block Diagram systems Pin Configuration IREF X1/REFIN Crystal Ocillator X2 PLL Clock Synthesis & Spread Spectrum & Control Circuit GND0_100M 100M_Q4100M_Q4+ 100M_Q0100M_Q0+ 100MHz 100M_Q3100M_Q3+ 100M_Q1+ 100M_Q1- Q_25M SCLK SDATA GND_25M 25M_OUT1 VDDA GNDA VDDO_100M VDDO_100M 25M_OUT2 VDD_25M GND_XTAL GNDO_100M 100M_Q2+ 100M_Q2- 5 2 SCLK SDATA 475 Ohm IREF 12-0168 O VDD_XTAL X2 PDRESET X1 1 www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator Pin Description Pin # 1 2 3 4 5 6 7 8 Pin Name IREF 100M_Q4100M_Q4+ 100M_Q3100M_Q3+ SCLK SDATA GND_25M Pin Type Output Output Output Output Output Input I/O Power 9 25M_OUT1 Output 10 25M_OUT2 Output 11 VDD_25M Power Pin Description Connect to 475-Ohm resistor to set HCSL output drive current 100MHz HCSL output 100MHz HCSL output 100MHz HCSL output 100MHz HCSL output SMBus compatible input clock. Supports fast mode 400 kHz input clock SMBus compatible data line Ground for 25MHz output 25MHz LVCMOS output. When disabled, output is trisated and has a normal 110kOhm pull-down 25MHz LVCMOS output. When disabled, output is trisated and has a normal 110kOhm pull-down 3.3V supply for 25MHz output 12 GND_XTAL Power Ground for XTAL 13 PDRESET Input 14 15 16 X1 X2 VDD_XTAL Input Output Power Power on reset, when low all PLLs are powered down and output trisated. SMBus registers are reset to default values Crystal input. Integrated 6pf capacitance Crystal output. Integrated 6pf capacitance 3.3V supply for XTAL 17 100M_Q2- Output 100MHz HCSL output 18 19 20 21 22 23 24 100M_Q2+ GNDO_100M VDDO_100M VDDO_100M GNDA VDDA 100M_Q1- Output Output Power Power Power Power Output 100MHz HCSL output Ground for 100MHz output buffer 3.3V supply for 100MHz output buffer 3.3V supply for 100MHz output buffer Ground for 100MHz related PLL 3.3V supply for 100MHz related PLL 100MHz HCSL output 25 100M_Q1+ Output 100MHz HCSL output 26 27 28 100M_Q0+ 100M_Q0GNDO_100M Output Output Power 100MHz HCSL output 100MHz HCSL output Ground for 100MHz output buffer 12-0168 2 www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator Serial Data Interface (SMBus) PI6C49015 is a slave only SMBus device that supports indexed block read and indexed block write protocol using a single 7-bit address and read/write bit as shown below. Address Assignment A6 A5 A4 A3 A2 A1 A0 R/W 1 1 0 1 0 0 1 0/1 How to Write 1 bit 8 bits 1 8 bits 1 8 bits 1 8 bits 1 Start bit d2H Ack Register offset Ack Byte Count = N Ack Data Byte 0 Ack … 8 bits 1 1 bit Data Byte N-1 Ack Stop bit Note: Register offset for indicating the starting register for indexed block write and indexed block read. Byte Count in write mode cannot be 0. 1. How to Read (M: abbreviation for Master or Controller; S: abbreviation for slave/clock) 1 bit M: Start bit 8 bits M: Send "D2h" 1 bit 8 bits S: sends Ack M: send starting databyte location: N 1 bit S: sends Ack 1 bit M: Start bit 8 bits M: Send "D3h" 1 bit 8 bits S: sends Ack S: sends # of data bytes that will be sent: X 1 bit 8 bits M: sends Ack S: sends starting data byte N 1 bit M: sends Ack … 8 bits 1 bit 1 bit … S: sends data byte N+X1 M: Not Acknowledge M: Stop bit Byte 0: Spread Spectrum Control Register Bit Description Type Power Up Condition Output(s) Affected 7 Spread Spectrum Selection for 100 MHz HCSL PCI-Express clocks RW 0 All 100MHz HCSL PCI Express output RW 0 PD_RESET pin, bit 5 RW 1 All outputs 6 5 Enables hardware or software control of OE bits (see Byte 0–Bit 6 and Bit 5 Functionality table) Software PD_RESET bit. Enables or disables all outputs (see Byte 0–Bit 6 and Bit 5 Functionality table) 4 to 1 Reserved RW Undefined Not Applicable 0 OE for 25M_Out2 RW 1 25M_Out2 12-0168 3 www.pericom.com Notes 0=spread off 1 = -0.5% down spread 0 = hardware cntl 1 = software ctrl 0 = disabled 1 = enabled 0 = disabled 1 = enabled P-0.1 02/29/12 PI6C49015 Embedded Clock Generator Byte 0 - Bit 6 and Bit 5 Functionality Bit 6 0 1 1 Bit 5 X 0 1 Description PD_RESET HW pin/signal = enabled Disables all outputs and tri-states the outputs, PD_RESET HW pin/signal = DO NOT CARE Enable all outputs, PD_RESET HW pin/signal = DON'T CARE Byte 1: Control Register Bit Description Type Power Up Condition Output(s) Affected 7 Reserved RW Undefined Not Applicable 6 OE for 25M_Out1 RW 1 25M_Out1 5 Reserved RW Undefined Not Applicable 4 OE for 100M_Q4 HCSL output RW 1 100M_Q4 3 Reserved RW Undefined Not Applicable 2 OE for 100M_Q3 HCSL output RW 1 100M_Q3 1 to 0 Reserved RW Undefined Not Applicable Notes 0 = disabled 1 = enabled 0=disable 1 = enabled 0=disable 1 = enabled Byte 2: Control Register Bit Description Type Power Up CondiOutput(s) Affected tion 7 to 5 4 to 0 Reserved Reserved RW R Undefined Undefined 12-0168 4 Notes Not Applicable Not Applicable www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator Byte 3: Control Register Bit Description Type Power Up Condition 7 OE for 100M_Q2 HCSL Output RW 1 100M_Q2 6 to 3 Reserved RW Undefined Not Applicable 2 OE for 100M_Q1 HCSL Output RW 1 100M_Q1 1 OE for 100M_Q0 HCSL Output RW 1 100M_Q0 0 Reserved R Undefined Not Applicable Output(s) Affected Notes 0 = disabled 1 = enabled 0 = disabled 1 = enabled 0 = disabled 1 = enabled Byte 4 & 5: Control Register Bit Description Type Power Up Condition Output(s) Affected 7 to 0 Reserved R Undefined Not Applicable Notes Byte 6: Control Register Bit Description Type Power Up Condition Output(s) Affected 7 Revision ID bit 3 R 1 Not Applicable 6 Revision ID bit 2 R 0 Not Applicable 5 Revision ID bit 1 R 0 Not Applicable 4 Revision ID bit 0 R 0 Not Applicable 3 Vendor ID bit 3 R 0 Not Applicable 2 Vendor ID bit 2 R 0 Not Applicable 1 Vendor ID bit 1 R 1 Not Applicable 0 Vendor ID bit 0 R 1 Not Applicable 12-0168 5 www.pericom.com Notes P-0.1 02/29/12 PI6C49015 Embedded Clock Generator Absolute Maximum Ratings1 (Over operating free-air temperature range) Parameters Min. Max. Storage Temperature -65 150 Ambient Temperature with Power Applied -40 85 3.3V Analog Supply Voltage -0.5 4.6 ESD Protection (HBM) Units °C V 2000 Note: 1. Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Recommended Operating Conditions Symbol Parameters Test Condition Min. Typ. Max. Units 3.0 - 3.6 V VDD Power supply IDD Total Power Supply Current All outputs unloaded - - 65 mA IDD _Output Tri-stated Total power supply current with tristated outputs OE = “0”, no load - - 42 mA IDD Power-Down Total power supply current in power down mode PD_RESET= “0”, no load - - 3.8 mA TA Operating temperature -40 - +85 °C Min Typ Max Units LVCMOS DC Electrical Characteristics Over Operating Conditions Symbol Parameter VIH Input High Voltage 2 - VIL Input Low Voltage -0.3 - VDD+0.3 0.8 VOH Output High Voltage IOH = -8mA VDD-0.4 - - VOL Output Low Voltage IOL = 8mA - - 0.4 IIH Input High Current VIN = VDD -0.1V - - 45 IIL Input Low Current VIN = 0V -45 - - PDRESET - 216 - 25M_OUT1, 25M_OUT2 - 110 - Internal Pull-Up Resistance Internal Pull-Down Resistance RPU RDN 12-0168 Conditions V µA kOhm 6 www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator HCSL DC Electrical Characteristics Over Operating Conditions Symbol Parameter VOH VOL VCROSS ΔVCROSS Conditions Min Typ Max Output High Voltage 660 - 950 Output Low Voltage - - 150 250 - 550 - - 140 - 12 - Min Typ Max - 25 - Absolute Crossing Point Voltages Total variation of VCROSS overall edges With 475-Ohm resistor connected between IREF pin and GND Input High Current IOH Units mV mA LVCMOS AC Electrical Characteristics Over Operating Conditions Symbol Parameter Conditions Fin Input Frequency FOUT Output Frequency CLOAD = 15pF - 25 - Tr/Tf Output Rise/Fall time 20% of VDD to 80% of VDD - - 1.2 ns TDC Output Duty Cycle 45 - 55 % Tj Period Jitter - - 30 ps 25 MHz clock output Units MHz HCSL AC Switching Characteristics1,2,3 Over Operating Conditions Symbol Parameter Conditions Min Typ Max Units FOUT Tr/Tf Output Frequency Output Rise/Fall time Rise and Fall Time Variation2 HCSL termination Between 0.175V and 0.525V 175 - 100 700 MHz ps - - 125 ps 47 - 53 % - - 70 ps 86 ps 3.1 ps ΔTr/ΔTf TDC Output Duty Cycle3 Tcj Cycle-to-Cycle Jitter Peak-to-Peak Phase Jitter PCIe 2.0 RMS Phase Jitter 3 TPJ JRMS2.0 Differential waveform Using PCIe jitter measurement method PCIe 2.0 Test Method @ 100MHz Output Notes: 1. Test configuration is Rs=33Ω, Rp=49.9Ω, and 2pF 2. Measurement taken from a single-ended waveform. 3. Measurement taken from a differential waveform. 12-0168 7 www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator HCSL Output Buffer Characteristics VDD (3.3V ± 10%) Slope ~ 1/Rs RO IOUT ROS Iout 0V VOUT = 0.85V max 0.85V HCSL Output Buffer Characteristics Symbol Minimum RO 3000Ω ROS unspecified VOUT N/A Maximum N/A unspecified 950mV Configuration Test Load Board Termination for HCSL Outputs Rs 33Ω 5% PI6C49015 Clock TLA Rs 33Ω 5% Clock# TLB 475Ω 1% 12-0168 Rp 49.9Ω 1% Rp 49.9Ω 1% 8 2pF 5% 2pF 5% www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator LVCMOS Test Circuit 3.3V ±10% 3.3V ±10% 10Ω VDD VDDA 15pF GND Application Notes Crystal circuit connection The following diagram shows PI6C49015 crystal circuit connection with a parallel crystal. For the CL=18pF crystal, it is suggested to use C1= 18pF, C2= 18pF. C1 and C2 can be adjusted to fine tune to the target ppm of crystal oscillator according to different board layouts. Crystal Oscillator Circuit XTAL_IN C1 18pF Crystal�(CL�=�18pF) XTAL_OUT C2 18pF Recommended Crystal Specification Pericom recommends: a) GC2500003 XTAL 49S/SMD(4.0 mm), 25M, CL=18pF, +/-30ppm, http://www.pericom.com/pdf/datasheets/se/GC_GF.pdf b) FY2500081, SMD 5x3.2(4P), 25M, CL=18pF, +/-30ppm, http://www.pericom.com/pdf/datasheets/se/FY_F9.pdf c) FL2500047, SMD 3.2x2.5(4P), 25M, CL=18pF, +/-20ppm, http://www.pericom.com/pdf/datasheets/se/FL.pdf 12-0168 9 www.pericom.com P-0.1 02/29/12 PI6C49015 Embedded Clock Generator DOCUMENT CONTROL NO. PD - 1313 REVISION: D 28 DATE: 03/09/05 .169 .177 4.3 4.5 .004 .008 1 .378 .386 9.6 9.8 0.45 0.75 0.09 0.20 .018 .030 .252 BSC 6.4 1 .047 1.20 Max SEATING PLANE .007 .012 0.19 0.30 .0256 BSC 0.65 .002 .006 0.05 0.15 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Note: 1. Package Outline Exclusive of Mold Flash and Metal Burr 2. Controlling dimentions in millimeters 3. Ref: JEDEC MO-153F/AE DESCRIPTION: 28-Pin, 173-Mil Wide, TSSOP PACKAGE CODE: L Note: • For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php Ordering Information(1-3) Ordering Code Package Code PI6C49015LIE L Package Description 28 pin, Pb-free & Green, TSSOP (L28) Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. E = Pb-free and Green 3. Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336  •  www.pericom.com 12-0168 All trademarks are property of their respective owners. 10 www.pericom.com P-0.1 02/29/12