ics9248-168 Integrated Device Technology, ics9248-168 Datasheet
ics9248-168
Related parts for ics9248-168
ics9248-168 Summary of contents
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... 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. ICS9248-168 Pin Configuration 48 1 ...
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... ICS9248-168 Pin Descriptions ...
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... General Description The ICS9248-168 is a main clock synthesizer chip for AMD-K7 based note book systems with VIA style chipset. This provides all clocks required for such a system. Spread spectrum may be enabled through I This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-168 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations ...
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... ICS9248-168 Serial Configuration Command Bitmap Byte0: Functionality and Frequency Select Register (default = ...
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... Note: Don’t write into this register, writing into this register can cause malfunction 5 ICS9248-168 ...
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... ICS9248-168 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0 Ambient Operating Temperature . . . . . . . . . . . . . 0°C to +70°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied ...
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... Note 2 Note 2 Note required for switching, where ICS9248-168 MIN TYP MAX 1 1.8 0 0.9 1.6 0.8 1.6 45 51.5 55 200 125 300 250 MIN TYP MAX 60 1 1.8 0.8 18 0.5 0.9 0.3 0.9 0.4 Vpull-up(ext) + 0.6 0.2 Vpull-up(ext) + 0.6 1 ...
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... ICS9248-168 Electrical Characteristics - SDRAM_OUT 70C; V =3.3V +/-5 (unless otherwise specified PARAMETER SYMBOL 1 Output Impedance R DSP3 1 Output Impedance R DSN3 Output High Voltage V OH3 Output Low Voltage V OL3 I Output High Current OH3 I Output Low Current OL3 1 Rise Time Fall Time ...
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... V =V *( MHz 1 ICS9248-168 MIN TYP MAX UNITS 2.6 V 0 1.4 2.0 ns 1 280 400 ps 200 ps MIN TYP MAX UNITS ...
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... ICS9248-168 General I The information in this section assumes familiarity with I For more information, contact ICS for an I How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) sends a dummy command code • ...
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... If programmability is not necessary, than only a single resistor is necessary. The programming resistors should be located close to the series termination resistor to minimize the current loop area more important to locate the series termination resistor close to the driver than the programming resistor. Fig ICS9248-168 ...
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... Crystal Notes: 1. All timing is referenced to the Internal CPUCLK (defined as inside the ICS9248-168 device shown, the outputs Stop Low on the next falling edge after PD# goes low asynchronous input and metastable conditions may exist. This signal is synchronized inside this part. ...
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... CPU_STOP asychronous input to the clock synthesizer used to turn off the CPU clocks for low power operation. CPU_STOP# is synchronized by the ICS9248-168. The minimum that the CPU clock is enabled (CPU_STOP# high pulse) is 100 CPU clocks. All other clocks will continue to run while the CPU clocks are disabled. The CPU clocks will always be stopped in a low state and start in such a manner that guarantees the high pulse width is a full pulse ...
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... ICS9248-168 Ordering Information ICS9248yF-168-T Example: ICS XXXX PPP - T Third party brands and names are the property of their respective owners. SYMBOL VARIATIONS Designation for tape and reel packaging Pattern Number ( digit number for parts with ROM code patterns) ...