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ICS954201 bảng dữ liệu(PDF) 2 Page - Integrated Circuit Systems |
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ICS954201 bảng dữ liệu(HTML) 2 Page - Integrated Circuit Systems |
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2 / 10 page  2 Integrated Circuit Systems, Inc. ICS954201 0819G—12/06/04 Pin Description PIN # PIN NAME PIN TYPE DESCRIPTION 1 VDDPCI PWR Power supply for PCI clocks, nominal 3.3V 2 GND PWR Ground pin. 3 PCICLK3 OUT PCI clock output. 4 PCICLK4 OUT PCI clock output. 5 PCICLK5 OUT PCI clock output. 6 GND PWR Ground pin. 7 VDDPCI PWR Power supply for PCI clocks, nominal 3.3V 8 ITP_EN/PCICLK_F0 I/O Free running PCI clock not affected by PCI_STOP#. ITP_EN: latched input to select pin functionality 1 = CPU_ITP pair 0 = SRC pair 9 PCICLK_F1 OUT Free running PCI clock not affected by PCI_STOP# . 10 Vtt_PwrGd#/PD IN Vtt_PwrGd# is an active low input used to determine when latched inputs are ready to be sampled. PD is an asynchronous active high input pin used to put the device into a low power state. The internal clocks, PLLs and the crystal oscillator are stopped. 11 VDD48 PWR Power pin for the 48MHz output.3.3V 12 USB_48MHz/FS_A I/O Frequency select latch input pin / Fixed 48MHz USB clock output. 3.3V. 13 GND PWR Ground pin. 14 DOTT_96MHz OUT True clock of differential pair for 96.00MHz DOT clock. 15 DOTC_96MHz OUT Complement clock of differential pair for 96.00MHz DOT clock. 16 FS_B/TEST_MODE IN 3.3V tolerant input for CPU frequency selection. Refer to input electrical characteristics for Vil_FS and Vih_FS values. TEST_MODE is a real time input to select between Hi-Z and REF/N divider mode while in test mode. Refer to Test Clarification Table. 17 SRCCLKT0 OUT True clock of differential SRC clock pair. 18 SRCCLKC0 OUT Complement clock of differential SRC clock pair. 19 SRCCLKT1 OUT True clock of differential SRC clock pair. 20 SRCCLKC1 OUT Complement clock of differential SRC clock pair. 21 VDDSRC PWR Supply for SRC clocks, 3.3V nominal 22 SRCCLKT2 OUT True clock of differential SRC clock pair. 23 SRCCLKC2 OUT Complement clock of differential SRC clock pair. 24 SRCCLKT3 OUT True clock of differential SRC clock pair. 25 SRCCLKC3 OUT Complement clock of differential SRC clock pair. 26 SRCCLKT4_SATA OUT True clock of differential SRC/SATA pair. 27 SRCCLKC4_SATA OUT Complement clock of differential SRC/SATA pair. 28 VDDSRC PWR Supply for SRC clocks, 3.3V nominal |
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