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5P49V5901 Datasheet(PDF) 3 Page - Integrated Device Technology |
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5P49V5901 Datasheet(HTML) 3 Page - Integrated Device Technology |
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3 / 37 page  NOVEMBER 11, 2016 3 PROGRAMMABLE CLOCK GENERATOR 5P49V5901 DATASHEET Table 1: Pin Descriptions Number Name Type Description 1 CLKIN Input Internal Pull-down Differential clock input. Weak 100kohms internal pull-down. 2 CLKINB Input Internal Pull-down Complementary differential clock input. Weak 100kohms internal pull-down. 3 XOUT Input Crystal Oscillator interface output. 4 XIN/REF Input Crystal Oscillator interface input, or single-ended LVCMOS clock input. Ensure that the input voltage is 1.2V max.Refer to the section “Overdriving the XIN/REF Interface”. 5VDDA Power Analog functions power supply pin.Connect to 1.8V to 3.3V. VDDA and VDDD should have the same voltage applied. 6 CLKSEL Input Internal Pull-down Input clock select. Selects the active input reference source in manual switchover mode. 0 = XIN/REF, XOUT (default) 1 = CLKIN, CLKINB CLKSEL Polarity can be changed by I2C programming as shown in Table 4. 7 SD/OE Input Internal Pull-down Enables/disables the outputs (OE) or powers down the chip (SD). The SH bit controls the configuration of the SD/OE pin. The SH bit needs to be high for SD/OE pin to be configured as SD. The SP bit (0x02) controls the polarity of the signal to be either active HIGH or LOW only when pin is configured as OE (Default is active LOW.) Weak internal pull down resistor. When configured as SD, device is shut down, differential outputs are driven high/low, and the single-ended LVCMOS outputs are driven low. When configured as OE, and outputs are disabled, the outputs can be selected to be tri-stated or driven high/low, depending on the programming bits as shown in the SD/OE Pin Function Truth table. 8 SEL1/SDA Input Internal Pull-down Configuration select pin, or I2C SDA input as selected by OUT0_SEL_I2CB. Weak internal pull down resistor. 9 SEL0/SCL Input Internal Pull-down Configuration select pin, or I2C SCL input as selected by OUT0_SEL_I2CB. Weak internal pull down resistor. 10 VDDO4Power Output power supply. Connect to 1.8 to 3.3V. Sets output voltage levels for OUT4/OUT4B. 11 OUT4 Output Output Clock 4. Please refer to the Output Drivers section for more details. 12 OUT4B Output Complementary Output Clock 4. Please refer to the Output Drivers section for more details. 13 OUT3B Output Complementary Output Clock 3. Please refer to the Output Drivers section for more details. 14 OUT3 Output Output Clock 3. Please refer to the Output Drivers section for more details. 15 VDDO3Power Output power supply. Connect to 1.8 to 3.3V. Sets output voltage levels for OUT3/OUT3B. 16 OUT2B Output Complementary Output Clock 2. Please refer to the Output Drivers section for more details. 17 OUT2 Output Output Clock 2. Please refer to the Output Drivers section for more details. 18 VDDO2Power Output power supply. Connect to 1.8 to 3.3V. Sets output voltage levels for OUT2/OUT2B. 19 OUT1B Output Complementary Output Clock 1. Please refer to the Output Drivers section for more details. 20 OUT1 Output Output Clock 1. Please refer to the Output Drivers section for more details. 21 VDDO1Power Output power supply. Connect to 1.8 to 3.3V. Sets output voltage levels for OUT1/OUT1B. |
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