Integrated Circuit Systems, Inc. ICS9250-26 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Pin Configuration *FS2//REF0 VDD0 X1 X2 GND0 GND1 3V66-0 3V66-1 VDD1 VDD2 PCICLK0 PCICLK1 PCICLK2 GND2 PCICLK3 PCICLK4 GND2 PCICLK5 PCICLK6 PCICLK7 VDD2 VDD3 GND3 GND4 48MHz_0 48MHz_1 VDD4 FS0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ICS9250-26 Recommended Application: 810/810E type chipset. Provides three CPU speeds (66.6, 100, 133MHz) with SDRAM = 133.3MHz. Output Features: • 3 CPU (2.5V) 66.6/133.3MHz (up to 150MHz achievable through I2C) • 9 SDRAM (3.3V) @ 133.3MHz (up to 150MHz achievable through I2C) • 8 PCI (3.3 V) @33.3MHz • 2 IOAPIC (2.5V) @ 33.3 MHz • 2 Hublink clocks (3.3 V) @ 66.6 MHz • 2 USB (3.3V) @ 48 MHz ( Non spread spectrum) • 1 REF (3.3V) @ 14.318 MHz Features: • Supports spread spectrum modulation , down spread 0 to -0.5% and ± 0.25% center spread. • I2C support for power management • Efficient power management scheme through PD# • Uses external 14.138 MHz crystal • Alternate frequency selections available through I2C control. 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 GNDL1 IOAPIC0 IOAPIC1 VDDL1 CPUCLK0 VDDL0 CPUCLK1 CPUCLK2 GNDL0 GND5 SDRAM0 SDRAM1 VDD5 SDRAM2 SDRAM3 GND5 SDRAM4 SDRAM5 VDD5 SDRAM6 SDRAM7 GND5 SDRAM_F VDD5 PD# SCLK SDATA FS1 56-Pin 300mil SSOP * This input has a 120KW pull-down to GND. Block Diagram Functionality 9250-26 Rev A 10/05/00 Third party brands and names are the property of their respective owners. FS2 FS1 FS0 X X 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 Function Tristate Test Active CPU = 66MHz SDRAM = 100MHz Active CPU = 100MHz SDRAM = 100MHz Active CPU = 133MHz SDRAM = 100MHz (Special Condition) Active CPU = 133MHz SDRAM = 133MHz ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. ICS9250-26 General Description The ICS9250-26 is a single chip clock solution for 810/810E type chipset. It provides all necessary clock signals for such a system. Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces EMI by 8dB to 10 dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9250-26 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations. Pin Configuration PIN NUMBER FS2 OUT REF0 OUT 3 X1 OUT 4 X2 OUT DESCRIPTION Function Select pin. Determines CPU frequency, all output functionality (with 50W) 3.3V, 14.318MHz reference clock output. Crystal input, has internal load cap (33pF) and feedback resistor from X2 Crystal output, nominally 14.318MHz. Has internal load cap (33pF) PWR Ground pins for 3.3V supply OUT 3 . 3 V F i xe d 6 6 M H z c l o c k o u t p u t s f o r H U B PWR 3.3V power supply OUT 3.3V PCI clock outputs, with Synchronous CPUCLKS 1 P I N NA M E 47, 41, 35, 24, 23, GND (5:0) 17, 14, 6, 5 8, 7 3V66 [1:0] 44, 38, 33, 27, 22, VDD (5:0) 21, 10, 10, 9, 2 20,19,18,16, PCICLK (7:0) 15,13,12,11 TYPE 26, 25 48MHz (1:0) OUT 3 . 3 V F i xe d 4 8 M H z c l o c k o u t p u t s f o r U S B 29, 28 FS (1:0) OUT Function Select pins. Determines CPU frequency, all output functionality. Please refer to Functionality table on page 3. 30 SDATA IN Data input for I2C serial input. 31 SCLK IN Clock input of I2C input 32 PD# IN 36, 37, 39, 40, 42, SDRAM (7:0) 43, 45, 46 OUT Asynchronous active low input pin used to power down the device into a low power state. The internal clocks are disabled and the VCO and the crystal are stopped. The latency of the power down will not be greater than 3ms. 3.3V output running 100MHz. All SDRAM outputs can be turned off through I2C 34 SDRAM_F OUT 3.3V free running 100MHz SDRAM not affected by I2C 56,48 GNDL (1:0) PWR Ground for 2.5V power supply for CPU & APIC CPUCLK (2:0) OUT 2.5V Host bus clock output. 66MHz or 100MHz 133MHz depending on FS pins 51, 53 VDDL (1:0) PWR 2.5V power suypply for CPU & IOAPIC 54, 55 IOAPIC (1:0) OUT 2.5V clock outputs running at 33.3MHz. 52, 50, 49 2 ICS9250-26 Maximum Allowed Current Max 2.5V supply consumption Max discrete cap loads, Vddq2 = 2.625V All static inputs = Vddq3 or GND 810E Condition Max 2.5V supply consumption Max discrete cap loads, Vddq2 = 3.465V All static inputs = Vddq3 or GND Powerdown Mode (PWRDWN# = 0 10mA 10mA Full Active 66MHz SEL1, 0 = 10 70mA 280mA Full Active 100MHz SEL1, 0 = 11 100mA 280mA Clock Enable Configuration PD# CPUCLK SDRAM IOAPIC 66MHz PCICLK REF, 48MHz Osc VCOs 0 LOW LOW LOW LOW LOW LOW OFF OFF 1 ON ON ON ON ON ON ON ON Power Groups* VDD0, GND0 = REF & Crystal VDD1, GND1 = 3V66 VDD2, GND2 = PCICLK VDD3, GND3 = PLL core VDD4, GND4 = 48MHz VDD5, GND5 = SDRAM_F, SDRAM VDDL0, GNDL0 = CPUCLK VDDL1, GNDL1 = IOAPIC * To ensure the processor will power up to the desired frequency, the 3.3V supply to the ICS9250-26 needs to reach a stable condition before the 2.5V supply does. In most systems, the power up ramp of the 2.5V is slower than the 3.3V ramp. For those instances, no special requirements are necessary. 3 ICS9250-26 General I2C serial interface information The information in this section assumes familiarity with I2C programming. For more information, contact ICS for an I2C programming application note. How to Write: How to Read: Controller (host) sends a start bit. Controller (host) sends the write address D2 (H) ICS clock will acknowledge Controller (host) sends a dummy command code ICS clock will acknowledge Controller (host) sends a dummy byte count ICS clock will acknowledge Controller (host) starts sending first byte (Byte 0) through byte 5 ICS clock will acknowledge each byte one at a time. Controller (host) sends a Stop bit Controller (host) will send start bit. Controller (host) sends the read address D3 (H) ICS clock will acknowledge ICS clock will send the byte count Controller (host) acknowledges ICS clock sends first byte (Byte 0) through byte 5 Controller (host) will need to acknowledge each byte Controller (host) will send a stop bit How to Write: Controller (Host) Start Bit Address D2(H) ICS (Slave/Receiver) How to Read: Controller (Host) Start Bit Address D3(H) ACK Dummy Command Code ACK ICS (Slave/Receiver) ACK Byte Count Dummy Byte Count ACK ACK ACK ACK ACK ACK ACK ACK ACK ACK ACK ACK ACK ACK Stop Bit Byte 0 Byte 0 Byte 1 Byte 1 Byte 2 Byte 2 Byte 3 Byte 3 Byte 4 Byte 4 Byte 5 Byte 5 Stop Bit Notes: 1. 2. 3. 4. 5. 6. The ICS clock generator is a slave/receiver, I2C component. It can read back the data stored in the latches for verification. Read-Back will support Intel PIIX4 "Block-Read" protocol. The data transfer rate supported by this clock generator is 100K bits/sec or less (standard mode) The input is operating at 3.3V logic levels. The data byte format is 8 bit bytes. To simplify the clock generator I2C interface, the protocol is set to use only "Block-Writes" from the controller. The bytes must be accessed in sequential order from lowest to highest byte with the ability to stop after any complete byte has been transferred. The Command code and Byte count shown above must be sent, but the data is ignored for those two bytes. The data is loaded until a Stop sequence is issued. At power-on, all registers are set to a default condition, as shown. 4 ICS9250-26 Byte 5: ICS Reserved Functionality and frequency select register (Default as noted in PWD) Bit Desctiption PWD Bit7 ICS RESERVED BIT (Needs to be 0 clock to operate normal) 0 Bit6 ICS RESERVED BIT (Needs to be 0 clock to operate normal) 0 Bit5 ICS RESERVED BIT (Needs to be 0 clock to operate normal) 0 Bit (3,0) Bit (3,0) CPUCLK SDRAM MHz MHz 3V66 MHz PCICLK MHz 100.00 66.60 33.30 70.00 105.00 70.00 35.00 72.67 109.00 72.67 36.33 1 74.67 112.00 74.66 37.33 0 0 100.00 100.00 66.60 33.30 0 1 105.00 105.00 70.00 35.00 1 0 109.00 109.00 72.67 36.33 FS2 (HW) FS0 (HW) SEL1 (Bit3) SEL0 (Bit0) 0 0 0 0 66.67 0 0 0 1 0 0 1 0 0 0 1 0 1 0 1 0 1 0 1 1 1 112.01 112.00 74.66 37.33 1 0 0 0 133.34 133.34 88.66 44.33 1 0 0 1 140.00 105.00 70.00 35.00 1 0 1 0 120.00 90.00 60.00 30.00 1 0 1 1 124.00 124.00 82.66 41.33 1 1 0 0 133.34 100.00 66.60 33.30 1 1 0 1 150.00 150.00 75.00 37.50 1 1 1 0 140.00 140.00 70.00 35.00 1 1 1 1 132.99 132.99 66.60 33.30 XXXX Note 1 Bit4 0 = Down Spread Spread Spectrum 0 to -.5% 1 = Center Spread Spread Spectrum ± .25% 0 Bit2 Not used (Needs to be 1 for normal clock operation) 1 Bit1 Not used (Needs to be 1 for normal clock operation) 1 Note1: Default at power-up will be for Bit 3 and Bit 0 to be 00, with external hardware selection of FS0, FS2 defining specific frequency. 5 ICS9250-26 Byte 0: Control Register (1 = enable, 0 = disable) Bit Bit 7 Bit 6 Bit 5 Bit 4 Pin# Name PWD Description Reserved ID 0 (Active/Inactive) Reserved ID 0 (Active/Inactive) Reserved ID 0 (Active/Inactive) Reserved ID 1 (Active/Inactive) SpreadSpectrum Bit 3 1 (Active/Inactive) (1=On/0=Off) Bit 2 26 48MHz 1 1 (Active/Inactive) Bit 1 25 48MHz 0 1 (Active/Inactive) Bit 0 49 CPUCLK2 1 (Active/Inactive) Note: Do not write in ID bits, these bits are for ICS internal use only. Byte 1: Control Register (1 = enable, 0 = disable) Bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Pin# 36 37 39 40 42 43 45 46 Name SDRAM7 SDRAM6 SDRAM5 SDRAM4 SDRAM3 SDRAM2 SDRAM1 SDRAM0 PWD 1 1 1 1 1 1 1 1 Description (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) PWD 1 1 1 1 1 1 1 1 Description (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) Byte 2: Control Register (1 = enable, 0 = disable) Bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Pin# 20 19 18 16 15 13 12 - Name PCICLK7 PCICLK6 PCICLK5 PCICLK4 PCICLK3 PCICLK2 PCICLK1 Reserved Notes: 1. Inactive means outputs are held LOW and are disabled from switching. These outputs are designed to be configured at power-on and are not expected to be configured during the normal modes of operation. 2. PWD = Power on Default 6 ICS9250-26 Byte 3: Reserved Register (1 = enable, 0 = disable) Bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Pin# - Name Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved PWD 0 0 0 0 0 0 0 0 Description (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) PWD 0 0 0 0 0 0 0 0 Description (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) (Active/Inactive) Byte 4: Reserved Register (1 = enable, 0 = disable) Bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Pin# - Name Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Notes: 1. Inactive means outputs are held LOW and are disabled from switching. These outputs are designed to be configured at power-on and are not expected to be configured during the normal modes of operation. 2. PWD = Power on Default 7 ICS9250-26 Electrical Characteristics - Input/Supply/Common Output Parameters TA = 0 - 70C; Supply Voltage VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5% (unless otherwise stated) PARAMETER SYMBOL CONDITIONS MIN TYP MAX Input High Voltage VIH 2 VDD+0.3 Input Low Voltage VIL VSS-0.3 0.8 Input High Current IIH VIN = VDD -5 5 IIL1 VIN = 0 V; Inputs with no pull-up resistors -5 2 Input Low Current IIL2 VIN = 0 V; Inputs with pull-up resistors -200 -100 CL = 0 pF; Select @ 66 MHz 97 110 CL = 0 pF; Select @ 100 MHz 91 105 CL = 0 pF; Select @ 133 MHz 100 130 IDD3.3OP CL = Max loads; Select @ 66 MHz 275 310 CL = Max loads; Select @ 100 MHz 267 300 Operating Supply Current IDD2.5OP Powerdown Current Input Frequency Pin Inductance Input Capacitance1 1 Transition time 1 Settling time Clk Stabilization1 Delay1 1 IDD3.3PD IDD.25PD Fi Lpin CIN COUT CINX Ttrans CL = Max loads; Select @ 133 MHz CL = 0 pF; Select @ 66 MHz CL = 0 pF; Select @ 100 MHz CL = 0 pF; Select @ 133 MHz CL = Max loads; Select @ 66 MHz CL = Max loads; Select @ 100 MHz 278 8 11 13 22 31 350 10 15 20 70 100 CL = Max loads; Select @ 133 MHz CL = Max loads Input address VDD or GND VDD = 3.3 V 37 220 <1 14.318 7 130 400 10 16 Logic Inputs Output pin capacitance X1 & X2 pins 12 5 6 27 45 UNITS V V µA µA mA mA mA mA µA MHz nH pF pF pF To 1st crossing of target frequency 5 ms Ts From 1st crossing to 1% target frequency 5 ms TSTAB tPZH,tPZL tPHZ,tPLZ From VDD = 3.3 V to 1% target frequency Output enable delay (all outputs) Output disable delay (all outputs) 5 10 10 ms ns ns Guaranteed by design, not 100% tested in production. 8 1 1 ICS9250-26 Electrical Characteristics - CPU TA = 0 - 70C; VDDL = 2.5 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 VO = VDD*(0.5) Output Impedance RDSP2B 1 Output Impedance RDSN2B VO = VDD*(0.5) Output High Voltage VOH2B IOH = -1 mA Output Low Voltage VOL2B IOL = 1 mA VOH @ MIN = 1.0 V IOH2B Output High Current VOH @ MAX = 2.375 V VOL @ MIN = 1.2 V IOL2B Output Low Current VOL @ MAX = 0.3 V Rise Time1 Fall Time 1 Duty Cycle1 1 Skew window Jitter, Cycle-to-cycle1 1 MIN 13.5 13.5 2 TYP 16 21 -27 -68 -9 54 11 27 MAX UNITS 45 Ω 45 Ω V 0.4 V -27 30 mA mA tr2B VOL = 0.4 V, VOH = 2.0 V 0.4 1.1 1.6 ns tf2B VOH = 2.0 V, VOL = 0.4 V 0.4 1.1 1.6 ns dt2B VT = 1.25 V, 66, 100 MHz VT = 1.25 V, 133 MHz 45 40 49 48 55 55 % tsk2B VT = 1.25 V 65 175 ps tjcyc-cyc2B VT = 1.25 V 90 250 ps Guaranteed by design, not 100% tested in production. Electrical Characteristics - 3V66 TA = 0 - 70C; VDD = 3.3 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 Output Impedance RDSP1B VO = VDD*(0.5) VO = VDD*(0.5) Output Impedance RDSN1B1 IOH = -1 mA Output High Voltage VOH1 IOL = 1 mA Output Low Voltage VOL1 VOH @ MIN = 1.0 V IOH1 Output High Current VOH @ MAX = 3.135 V VOL @ MIN = 1.95 V IOL1 Output Low Current VOL @ MAX = 0.4 V Rise Time1 Fall Time 1 1 Duty Cycle Skew window1 Jitter, Cycle-to-cycle1 1 MIN 12 12 2.4 TYP 14 14.5 -33 -108 -9 95 29 30 MAX UNITS 55 Ω 55 Ω V 0.55 V -33 38 mA mA tr1 VOL = 0.4 V, VOH = 2.4 V 0.4 1.2 1.6 ns tf1 dt1 VOH = 2.4 V, VOL = 0.4 V 0.4 1.2 1.6 ns VT = 1.5 V 45 49 55 % tsk1 VT = 1.5 V 65 175 ps tjcyc-cyc1 VT = 1.5 V 120 500 ps Guaranteed by design, not 100% tested in production. 9 ICS9250-26 Electrical Characteristics - IOAPIC TA = 0 - 70C; VDDL = 2.5 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 Output Impedance RDSP4B VO = VDD*(0.5) 1 VO = VDD*(0.5) Output Impedance RDSN4B IOH = -1 mA Output High Voltage VOH4B IOL = 1 mA Output Low Voltage VOL4B VOH @ MIN = 1.0 V IOH4B Output High Current VOH @ MAX = 2.375 V VOL @ MIN = 1.2 V IOL4B Output Low Current VOL @ MAX = 0.3 V Rise Time1 Fall Time 1 1 Duty Cycle Skew window1 Jitter, Cycle-to-cycle1 1 MIN 9 9 2 TYP 16 20 -27 -68 -9 54 11 27 MAX UNITS 30 Ω 30 Ω V 0.4 V -27 30 mA mA tr4B VOL = 0.4 V, VOH = 2.0 V 0.4 1.1 1.6 ns tf4B dt4B VOH = 2.0 V, VOL = 0.4 V 0.4 1.1 1.6 ns VT = 1.25 V 45 49 55 % tsk4B VT = 1.25 V 81 250 ps tjcyc-cyc4B VT = 1.25 V 150 500 ps Guaranteed by design, not 100% tested in production. Electrical Characteristics - SDRAM TA = 0 - 70C; VDD = 3.3 V +/-5%; CL = 20-30 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 VO = VDD*(0.5) Output Impedance RDSP3B Output Impedance RDSN3B1 VO = VDD*(0.5) VOH @ MIN = 2.0 V IOH3 Output High Current VOH @ MAX = 3.135 V VOL @ MIN = 1.0 V IOL3 Output Low Current VOL @ MAX = 0.4 V Rise Time1 54 TYP 12 15 -92 -16 68 29 MAX UNITS 24 Ω 24 Ω -46 53 mA mA tr3 VOL = 0.4 V, VOH = 2.4 V 0.4 1 1.6 ns VOH = 2.4 V, VOL = 0.4 V 0.4 1.5 1.6 ns Duty Cycle Skew window1 tf3 dt3 VT = 1.5 V 45 52 55 % tsk3 VT = 1.5 V 85 250 ps Jitter, Cycle-to-cycle1 tjcyc-cyc3 VT = 1.5 V, 66, 100 MHz 120 250 VT = 1.5 V, 133 MHz 150 300 Fall Time 1 1 1 MIN 10 10 -54 Guaranteed by design, not 100% tested in production. 10 ps ICS9250-26 Electrical Characteristics - PCI TA = 0 - 70C; VDD = 3.3 V +/-5%; CL = 10-30 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 Output Impedance RDSP1B VO = VDD*(0.5) 1 VO = VDD*(0.5) Output Impedance RDSN1B IOH = -1 mA Output High Voltage VOH1 IOL = 1 mA Output Low Voltage VOL1 VOH @ MIN = 1.0 V IOH1 Output High Current VOH @ MAX = 3.135 V VOL @ MIN = 1.95 V IOL1 Output Low Current VOL @ MAX = 0.4 V Rise Time1 Fall Time 1 1 Duty Cycle Skew window1 Jitter, Cycle-to-cycle1 1 MIN 12 12 2.4 TYP 15 15 -33 -106 -14 94 29 30 MAX UNITS 55 Ω 55 Ω V 0.55 V -33 38 mA mA tr1 VOL = 0.4 V, VOH = 2.4 V 0.4 1.3 2 ns tf1 dt1 VOH = 2.4 V, VOL = 0.4 V 0.4 1.4 2 ns VT = 1.5 V 45 51 55 % tsk1 VT = 1.5 V 250 500 ps tjcyc-cyc1 VT = 1.5 V 150 500 ps MIN 20 20 2.4 TYP 29 27 MAX UNITS 60 Ω 60 Ω V 0.55 V -29 -54 -11 54 16 Guaranteed by design, not 100% tested in production. Electrical Characteristics - REF, 48MHz_0 (Pin 25) TA = 0 - 70C; VDD = 3.3 V +/-5%; CL = 10-20 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 Output Impedance RDSP5B VO = VDD*(0.5) 1 VO = VDD*(0.5) Output Impedance RDSN5B IOH = -1 mA Output High Voltage VOH15 IOL = 1 mA Output Low Voltage VOL5 VOH @ MIN = 1.0 V IOH5 Output High Current VOH @ MAX = 3.135 V VOL @ MIN = 1.95 V IOL5 Output Low Current VOL @ MAX = 0.4 V Rise Time1 Fall Time 1 1 Duty Cycle Jitter, Cycle-to-cycle1 Jitter, Cycle-to-cycle1 1 29 -23 27 mA mA tr5 VOL = 0.4 V, VOH = 2.4 V 0.4 1.3 4 ns tf5 dt5 VOH = 2.4 V, VOL = 0.4 V 0.4 1.6 4 ns VT = 1.5 V 45 53 55 % tjcyc-cyc5 VT = 1.5 V, Fixed clocks 130 500 ps tjcyc-cyc5 VT = 1.5 V, Ref clocks 465 1000 ps Guaranteed by design, not 100% tested in production. 11 ICS9250-26 Electrical Characteristics - 48MHz_1 (Pin 26) TA = 0 - 70C; VDD = 3.3 V +/-5%; CL = 20-30 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS 1 Output Impedance RDSP3B VO = VDD*(0.5) Output Impedance RDSN3B1 VO = VDD*(0.5) IOH = -1 mA Output High Voltage VOH3 IOL = 1 mA Output Low Voltage VOL3 VOH @ MIN = 2.0 V IOH3 Output High Current VOH @ MAX = 3.135 V VOL @ MIN = 1.0 V IOL3 Output Low Current VOL @ MAX = 0.4 V Rise Time1 Fall Time 1 1 Duty Cycle Jitter, Cycle-to-cycle1 1 MIN 10 10 2.4 TYP 15 15 -54 -82 -20 95 28 54 MAX UNITS 24 Ω 24 Ω V 0.55 V -46 53 mA mA tr3 VOL = 0.4 V, VOH = 2.4 V 0.4 1.1 1.6 ns tf3 dt3 VOH = 2.4 V, VOL = 0.4 V 0.4 1.3 1.6 ns VT = 1.5 V 45 53 55 % 130 250 ps TYP -2.6 150 7.2 130 100 155 2.4 275 -0.4 0.25 MAX UNITS -2 ns 500 ps 8 ns 500 ps 500 ps 500 ps 3.5 ns 500 ps 1 ns 1 ns tjcyc-cyc3B VT = 1.5 V Guaranteed by design, not 100% tested in production. Group Skews (CPU = 66 MHz) TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5% CPU & IOAPIC load (lumped) = 20 pF; PCI, SDRAM, 3V66 load (lumped) = 30 pF Refer to Group Offset Waveform diagram for definition of transition edges. PARAMETER SYMBOL CONDITIONS MIN 1 T -3 CPU to SDRAM Skew sk1 CPU-SDRAM CPU @ 1.25 V, SDRAM @ 1.5 V 1 0 Skew Window Tw1 CPU-SDRAM 1 T 7 CPU to 3V66 Skew sk1 CPU-3V66 CPU @ 1.25 V, 3V66 @ 1.5 V 1 Tw1 CPU-3V66 0 Skew Window 1 -500 SDRAM to 3V66 Skew Tsk1 SDRAM-3V66 SDRAM, 3V66 @ 1.5 V 1 0 Skew Window Tw1 SDRAM-3V66 1 Tsk1 3V66-PCI 1.5 3V66 to PCI Skew 3V66, PCI @ 1.5 V 1 Tw1 3V66-PCI 0 Skew Window 1 Tsk1 IOAPIC-PCI -1 IOAPIC to PCI Skew IOAPIC @ 1.25 V, PCI @ 1.5 V 1 Tw1 IOAPIC-PCI 0 Skew Window 1 Guaranteed by design, not 100% tested in production. 12 ICS9250-26 Group Skews (CPU = 100 MHz) TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5% CPU & IOAPIC load (lumped) = 20 pF; PCI, SDRAM, 3V66 load (lumped) = 30 pF Refer to Group Offset Waveform diagram for definition of transition edges. PARAMETER SYMBOL CONDITIONS MIN 1 Tsk2 CPU-SDRAM 4.5 CPU to SDRAM Skew CPU @ 1.25 V, SDRAM @ 1.5 V 1 T 0 Skew Window w2 CPU-SDRAM 1 Tsk2 CPU-3V66 4.5 CPU to 3V66 Skew CPU @ 1.25 V, 3V66 @ 1.5 V Tw2 CPU-3V66 0 Skew Window1 1 -500 SDRAM to 3V66 Skew Tsk2 SDRAM-3V66 SDRAM, 3V66 @ 1.5 V 0 Skew Window1 Tw2 SDRAM-3V66 1 T 1.5 3V66 to PCI Skew sk2 3V66-PCI 3V66, PCI @ 1.5 V Tw2 3V66-PCI 0 Skew Window1 1 T -1 IOAPIC to PCI Skew sk2 IOAPIC-PCI IOAPIC @ 1.25 V, PCI @ 1.5 V 0 Skew Window1 Tw2 IOAPIC-PCI 1 Guaranteed by design, not 100% tested in production. 1 Guaranteed by design, not 100% tested in production. TYP 4.9 140 4.8 150 100 155 2.4 275 -0.4 0.25 MAX UNITS 5.5 ns 500 ps 5.5 ns 500 ps 500 ps 500 ps 3.5 ns 500 ps 1 ns 1 ns TYP 70 125 -145 220 100 155 2.4 275 -0.4 0.25 MAX UNITS 500 ps 500 ps 500 ps 500 ps 500 ps 500 ps 3.5 ns 500 ps 1 ns 1 ns Group Skews (CPU = 133 MHz) TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5% CPU & IOAPIC load (lumped) = 20 pF; PCI, SDRAM, 3V66 load (lumped) = 30 pF Refer to Group Offset Waveform diagram for definition of transition edges. PARAMETER SYMBOL CONDITIONS MIN 1 Tsk3 CPU-SDRAM -500 CPU to SDRAM Skew CPU @ 1.25 V, SDRAM @ 1.5 V 1 0 Skew Window Tw3 CPU-SDRAM 1 Tsk3 CPU-3V66 -500 CPU to 3V66 Skew CPU @ 1.25 V, 3V66 @ 1.5 V 1 Tw3 CPU-3V66 0 Skew Window 1 -500 SDRAM to 3V66 Skew Tsk3 SDRAM-3V66 SDRAM, 3V66 @ 1.5 V 1 0 Skew Window Tw3 SDRAM-3V66 1 Tsk3 3V66-PCI 1.5 3V66 to PCI Skew 3V66, PCI @ 1.5 V 1 T 0 Skew Window w3 3V66-PCI 1 Tsk3 IOAPIC-PCI -1 IOAPIC to PCI Skew IOAPIC @ 1.25 V, PCI @ 1.5 V 1 T 0 Skew Window w3 IOAPIC-PCI 1 Guaranteed by design, not 100% tested in production. 13 ICS9250-26 Power Down Waveform Note 1. After PD# is sampled active (Low) for 2 consective rising edges of CPUCLKs, all the output clocks are driven Low on their next High to Low tranistiion. 2. Power-up latency <3ms. 3. Waveform shown for 100MHz Group Offset Waveforms 14 ICS9250-26 SYMBOL In Millimeters In Inches COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX A 2.413 2.794 .095 .110 A1 0.203 0.406 .008 .016 b 0.203 0.343 .008 .0135 c D 0.127 0.254 SEE VARIATIONS .005 .010 SEE VARIATIONS E 10.033 10.668 .395 .420 E1 7.391 7.595 .291 .299 e 0.635 BASIC h 0.381 L 0.508 1.016 SEE VARIATIONS N α 0.635 0° 0.025 BASIC .015 .025 .020 .040 SEE VARIATIONS 8° 0° 8° MIN MAX MIN MAX 18.288 18.542 .720 .730 JEDEC MO-118 DOC# 10-0034 6/1/00 REV B VARIATIONS D mm. N 56 D (inch) Ordering Information ICS9250yF-26-T Example: ICS XXXX y F - PPP - T Designation for tape and reel packaging Pattern Number (2 or 3 digit number for parts with ROM code patterns) Package Type F=SSOP Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device 15 ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate.