ASM3P2854C
Overview
- Generates Custom Clocks for FAX system from an inexpensive 24MHz Crystal
- 2x 66.66MHz low EMI (Spread Spectrum) clocks for ASIC1 (System / DDR SDRAM)
- 1 x 48MHz for USB1.1 HOST
- 2 x 33.33MHz low EMI (Spread Spectrum) clocks for System / DDR SDRAM of ASIC2 and ASIC3
- 1x 25MHz low EMI (Spread Spectrum) clock for LCD, Serial port, and buzzer of ASIC1
- 1x 12MHz for USB PHY (USB2.0)
- 1x Programmable clock for printer engine control
- One of the four programmable clock outputs selection through two Select Pins
- Supply Voltage 3.3V ± 0.3V
- Available in 16L TSSOP, Green package clocks required by the various components and subsystems of the FAX system. It uses an inexpensive 24MHz crystal as the input to generate two 66.66MHz low EMI (spread spectrum) clocks used by ASIC1 for system/ DDR SDRAM, two 33.33MHz low EMI (spread spectrum) clocks used by ASIC2 and ASIC3 for system/ DDR SDRAM, a 25MHz low EMI (Spread Spectrum) clock used by ASIC1 for LCD, Serial port, and buzzer, a 48MHz clock used by USB1.1 HOST, and a 12MHz clock used by USB PHY (USB2.0). One of the four Programmable clock (PCLK) frequencies of 24.00448MHz, 21.33732MHz, 21.19962MHz and 20.40464MHz used for Printer Engine control selectable through two Select pins S1 and S2. The accuracy of the synthesized programmable clocks is within ±18ppm. The custom clock generator works is with a Supply Voltage for 3.3V. The device is available in a 16L TSSOP Green package, over 0° C to +70° C temperature range. The output Clocks h ave an accuracy of ±50ppm. Product Description
