ics9342 Holt Integrated Circuits, Inc., ics9342 Datasheet
ics9342
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ics9342 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. ICS9342 1 48 OUTSEL1* ...
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... ICS9342 General Description The ICS9342 generates all clocks required for high speed PowerPC RISC microprocessor systems. With a zero delay buffer chip such as the ICS9112-17 multiple PCI clock outputs can be generated in phase with PCIREF. Spread Spectrum may be enabled by driving the SS_EN# pin low. Spread spectrum typically reduces system EMI by 8dB to 10dB ...
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... ICS9342 ...
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... ICS9342 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0 Ambient Operating Temperature . . . . . . . . . . . . . -40°C to +85°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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... L CONDITIONS *(0. *( ICS9342 M IN TYP M AX UNITS 13 13 2.4 V 0.32 0.4 V - 187 200 ps 95 150 ps ...
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... ICS9342 Electrical Characteristics - REF, OUT , OUT / 70º 3.3 V +/-5 ETER SYM BOL Output Impedance Output High Voltage V Output Low Voltage V Output High Current I Output Low Current I 1 Ris e Time 1 REF Fall Time ...
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... Shared Pin Operation - Input/Output Pins The I/O pins designated by (input/output) on the ICS9342 serve as dual signal functions to the device. During initial power-up, they act as input pins. The logic level (voltage) that is present on these pins at this time is read and stored into a 5-bit internal data latch. At the end of Power-On reset, (see AC characteristics for timing values), the device changes the mode of operations for these pins to an output function ...
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... Crystal Notes: 1. All timing is referenced to the Internal CPU (defined as inside the ICS9342 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# PCI_STOP# PD# PCIREF (externall) Notes: 1. All timing is referenced to CPUCLK. 2. Internal means inside the chip. 3. All other clocks continue to run undisturbed. 4. PD# and CPU_STOP# are shown in a high state. Third party brands and names are the property of their respective owners. ICS9342 ...
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... ICS9342 Ordering Information ICS9342yF-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) ...