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MK1493-03BGILFTR Datasheet(PDF) 2 Page - Integrated Device Technology |
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MK1493-03BGILFTR Datasheet(HTML) 2 Page - Integrated Device Technology |
2 / 19 page MK1493-03B PCI CLOCK GENERATOR CLOCK SYNTHESIZER IDT™ PCI CLOCK GENERATOR 2 MK1493-03B REV H 051310 Pin Assignment 48-pin TSSOP Table 1. Frequency Select 1) Each PCI clock is individually selectable. Table 2. Input Select (FS8, FS9,FS10&FS11) 2) The changes in frequency are step changes. 3) Default Value upon Power up. Pin Descriptions 21 CLK50M 22 FS6_B 23 FS5_B 24 FS4_B 1 FS3_A 2 FS2_A 3 FS1_A 4 FS0_A 5 GND 6 VDD 7 SCL 8 SDA 9 GND 10 X1 / ICLK 11 X2 12 VDD 13 REF25 14 VDD 15 GND 16 GND 17 VDD 18 CPUCLK 19 CPUCLK 20 FS7_B 28 27 26 25 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 PCICLK2/FS10 PCICLK1/FS9 PCICLK0 PCICLK3 FS4_A FS5_A FS6_A FS7_A FS0_B FS1_B PCICLK7 GND VDD PCICLK6 PCICLK5 PCICLK4 FS2_B VDD GND CLK66M/FS8 FS3_B VDD GND CLK66/71/83 FS(0:7)_B FS(0:7)_A PCICLK(0:7)* 1 2 00 25 MHz 01 33.3333 MHz 10 50 MHz 11 66.6666 MHz FS8 (pin 32) CPUCLK/CPUCLK 2 0 125MHz 1 100MHz3 FS9 (pin 27) FS10 (pin 28) CLK66M/71M/83M 2 (pin 33) 00 83.33 MHz3 01 71.42 MHz 10 66.66 MHz 11 OFF Pin Number Pin Name Pin Type Pin Description 1 FS3_A Input Freq select input pin for PCI CLK3 per table 1. Internal pull-up resistor 120K. 2 FS2_A Input Freq select input pin for PCI CLK2 per table 1. Internal pull-up resistor 120K. 3 FS1_A Input Freq select input pin for PCI CLK1 per table 1. Internal pull-up resistor 120K. 4 FS0_A Input Freq select input pin for PCI CLK0 per table 1. Internal pull-up resistor 120K. 5 GND Power Connect to ground. 6 VDD Power Connect to +3.3 V. 7 SCL Input Clock pin for SMBus circuitry, 5 V tolerant. 8 SDA Input Data pin for SMBus circuitry, 5 V tolerant. 9 GND Power Connect to ground. 10 X1/ICLK Input Crystal connection/input clock. Connect to a 25 MHz fundamental mode crystal or clock input. 11 X2 XO Connect to a 25 MHz fundamental mode crystal or leave open for clock input. 12 VDD Power Connect to +3.3 V. |
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