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ICS950223 Datasheet(PDF) 14 Page - Integrated Circuit Systems |
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ICS950223 Datasheet(HTML) 14 Page - Integrated Circuit Systems |
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14 / 24 page  14 Integrated Circuit Systems, Inc. ICS950223 0496C—05/06/05 I 2 C Table: Output Divider Control Register Bit 7 CPU Div3 RW X Bit 6 CPU Div2 RW X Bit 5 CPU Div1 RW X Bit 4 CPU Div0 RW X Bit 3 CPU Div3 RW X Bit 2 CPU Div2 RW X Bit 1 CPU Div1 RW X Bit 0 CPU Div0 RW X CPUCLK [1:0] divider ratio can be configured via these 4 bits individually. See Table 3: Divider Ratio Combination Table - - - - Type 0 1 PWD CPUCLK2 divider ratio can be configured via these 4 bits individually. Byte 15 Pin # Name Control Function See Table 3: Divider Ratio Combination Table Table 3: CPU, AGP and PCI Divider Ratio Combination Table Bit 00011011 MSB 124 8 00 0 2 100 4 1000 8 1100 16 01 1 3 101 6 1001 12 1101 24 10 10 5 110 10 1010 20 1110 40 11 11 7 111 14 1011 28 1111 56 LSB Address Div Address Div Address Div Address Div Divider (3:2) I 2 C Table: Output Divider Control Register Bit 7 3V66 Div3 RW X Bit 6 3V66 Div2 RW X Bit 5 3V66 Div1 RW X Bit 4 3V66 Div0 RW X Bit 3 3V66 Div3 RW X Bit 2 3V66 Div2 RW X Bit 1 3V66 Div1 RW X Bit 0 3V66 Div0 RW X I 2 C Table: Output Divider Control Register Bit 7 3V66INV 3V66[3:2] Phase Invert RW Default Inverse X Bit 6 3V66INV 3V66[1:0] Phase Invert RW Default Inverse X Bit 5 CPUINV CPU Phase Invert RW Default Inverse X Bit 4 CPUINV CPU Phase Invert RW Default Inverse X Bit 3 PCI Div3 RW X Bit 2 PCI Div2 RW X Bit 1 PCI Div1 RW X Bit 0 PCI Div0 RW X PWD - PCI divider ratio can be configured via these 4 bits individually. See Table 3: Divider Ratio Combination Table - - - Name Control Function Type 0 - 3V66 [1:0] divider ratio can be configured via these 4 bits individually. See Table 3: Divider Ratio Combination Table - - - 1 Type 0 1 PWD Byte 16 Pin # Name Control Function - 3V66 [3:2] divider ratio can be configured via these 4 bits individually See Table 3: Divider Ratio Combination Table - - - - Byte 17 Pin # - - - |
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