ICS952703BFT IDT, Integrated Device Technology Inc, ICS952703BFT Datasheet
ICS952703BFT
Specifications of ICS952703BFT
Related parts for ICS952703BFT
ICS952703BFT Summary of contents
Page 1
Integrated Circuit Systems, Inc. Programmable Timing Control Hub for K7 Recommended Application: SiS741 style chipset with 964 South Bridge. Output Features: • Pair of differential open drain CPU outputs • Single-ended open drain CPU output • ...
Page 2
Integrated Circuit Systems, Inc. General Description The ICS952703 is a two chip clock solution for desktop designs using SiS741 style chipsets. When used with a zero delay buffer such as the ICS9179-16 for PC133 or the ICS93735 for DDR applications ...
Page 3
Integrated Circuit Systems, Inc. Pin Description PIN # PIN NAME TYPE 1 PWR VDDREF 2 **FS0/REF0 3 **FS1/REF1 4 **Mode/REF2 5 GNDREF PWR OUT 8 GNDZ PWR 9 ZCLK0 OUT 10 ZCLK1 OUT 11 VDDZ PWR ...
Page 4
Integrated Circuit Systems, Inc. General SMBus serial interface information for the ICS952703 How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) sends the ...
Page 5
Integrated Circuit Systems, Inc. Table1: Frequency Selection Table Bit3 Bit2 Bit1 Bit0 Bit4 FS3 FS2 FS1 FS0 200. 200. 200. ...
Page 6
Integrated Circuit Systems, Inc Table: Frequency Select Register Byte 0 Pin # Name - SS_EN Bit 7 - SEL12_48MHz Bit 6 - SEL24_48MHz Bit 5 - Bit 4 - Bit 3 - Bit 2 - Bit 1 ...
Page 7
Integrated Circuit Systems, Inc Table: Output Skew Control Register Byte 4 Pin # - PCISkw3 Bit 7 - PCISkw2 Bit 6 - PCISkw1 Bit 5 - PCISkw0 Bit 4 - AGPSkw3 Bit 3 - AGPSkw2 Bit 2 ...
Page 8
Integrated Circuit Systems, Inc Table: Byte Count Register Byte 8 Pin # Name - Bit 7 - Bit 6 - Bit 5 - Bit 4 - Bit 3 - Bit 2 - Bit 1 - Bit 0 ...
Page 9
Integrated Circuit Systems, Inc Table: VCO Frequency Control Register Byte 11 Pin # Name - N Div8 Bit Div9 Bit Div5 Bit Div4 Bit Div3 ...
Page 10
Integrated Circuit Systems, Inc. Absolute Maximum Ratings Core Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . 4.6 V I/O Supply Voltage . . ...
Page 11
Integrated Circuit Systems, Inc. Electrical Characteristics - CPUCLKT 70°C; VDD=3.3V +/-5 PARAMETER SYMBOL Current Source 1 Zo Output Impedance Output High Voltage V OH3 Output Low Voltage V OL3 Rise Time t r3 Fall ...
Page 12
Integrated Circuit Systems, Inc. Electrical Characteristics - AGPCLK 70°C; VDD=3.3V +/-5 PARAMETER SYMBOL Output Frequency Output Impedance R DSP1 1 Output High Voltage Output Low Voltage V OL ...
Page 13
Integrated Circuit Systems, Inc. Electrical Characteristics - ZCLK 70°C; VDD=3.3V +/-5 PARAMETER SYMBOL Output Frequency Output Impedance R DSP1 1 Output High Voltage Output Low Voltage V OL ...
Page 14
Integrated Circuit Systems, Inc. Shared Pin Operation - Input/Output Pins The I/O pins designated by (input/output) 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 ...
Page 15
Integrated Circuit Systems, Inc. PCI_STOP# - Assertion (transition from logic "1" to logic "0") The impact of asserting the PCI_STOP# signal will be the following. All PCI and stoppable PCI_F clocks will latch low in their next high to low ...
Page 16
Integrated Circuit Systems, Inc INDEX INDEX AREA AREA 45° SEATING SEATING b PLANE PLANE .10 (.004) C .10 (.004) C Ordering Information ICS952703yFLFT Example: ICS 95XXXX ...
Page 17
Integrated Circuit Systems, Inc. Revision History Rev. Issue Date Description B 5/17/2005 Added LF Ordering Information 0813B—05/17/05 Preliminary Product Preview Page # 16 17 ICS952703 ...