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ICS951413 bảng dữ liệu(PDF) 12 Page - Renesas Technology Corp |
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ICS951413 bảng dữ liệu(HTML) 12 Page - Renesas Technology Corp |
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12 / 25 page  12 Integrated Circuit Systems, Inc. ICS951413 0929D—10/30/06 SMBus Table: M/N Programming & WD Safe Frequency Control Register Pin # Name Control Function Type 01 PWD Bit 7 M/N_EN PLLS M/N Programming Enable RW Disable Enable 0 Bit 6 Reserved Reserved RW - - 0 Bit 5 WD Safe Freq Source WD Safe Freq Source RW B10b(4:0) Latch Inputs 0 Bit 4 WD SF4 RW 0 Bit 3 WD SF3 RW 0 Bit 2 WD SF2 RW 0 Bit 1 WD SF1 RW 0 Bit 0 WD SF0 RW 0 SMBus Table: CPU Frequency Control Register Pin # Name Control Function Type 01 PWD Bit 7 N Div8 N Divider Prog bit 8 RW X Bit 6 N Div9 N Divider Prog bit 9 RW X Bit 5 M Div5 RW X Bit 4 M Div4 RW X Bit 3 M Div3 RW X Bit 2 M Div2 RW X Bit 1 M Div1 RW X Bit 0 M Div0 RW X SMBus Table: CPU Frequency Control Register Pin # Name Control Function Type 01 PWD Bit 7 N Div7 RW X Bit 6 N Div6 RW X Bit 5 N Div5 RW X Bit 4 N Div4 RW X Bit 3 N Div3 RW X Bit 2 N Div2 RW X Bit 1 N Div1 RW X Bit 0 N Div0 RW X SMBus Table: CPU Spread Spectrum Control Register Pin # Name Control Function Type 01 PWD Bit 7 SSP7 RW X Bit 6 SSP6 RW X Bit 5 SSP5 RW X Bit 4 SSP4 RW X Bit 3 SSP3 RW X Bit 2 SSP2 RW X Bit 1 SSP1 RW X Bit 0 SSP0 RW X - - Byte 13 - Spread Spectrum Programming bit(7:0) - - - - - - - Byte 12 - N Divider Programming Byte12 bit(7:0) and Byte11 bit(7:6) - - - - - - Byte 11 - The decimal representation of M and N Divier in Byte 11 and 12 will configure the CPU VCO frequency. Default at power up = latch-in or Byte 0 Rom table. VCO Frequency = 14.318 x [NDiv(9:0)+8] / [MDiv(5:0)+2] - - M Divider Programming bit (5:0) - - - - - - - Watch Dog Safe Freq Programming bits - - - - Byte 10 - Writing to these bit will configure the safe frequency as Byte0 bit (4:0). The decimal representation of M and N Divier in Byte 11 and 12 will configure the CPU VCO frequency. Default at power up = latch-in or Byte 0 Rom table. VCO Frequency = 14.318 x [NDiv(9:0)+8] / [MDiv(5:0)+2] These Spread Spectrum bits in Byte 13 and 14 will program the spread pecentage of CPU |
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