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ICS9LPR501 数据表(PDF) 18 Page - Integrated Circuit Systems |
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ICS9LPR501 数据表(HTML) 18 Page - Integrated Circuit Systems |
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18 / 22 page ![]() 18 Integrated Circuit Systems, Inc. ICS9LPR501 1118E—08/08/07 Byte 16 CK505 PLL1 Spread Spectrum Control Register Bit Pin Name Description Type 0 1 Default 7 Reserved Reserved RW - - 0 6 SSP14 RW - - x 5 SSP13 RW - - X 4 SSP12 RW - - X 3 SSP11 RW - - X 2 SSP10 RW - - X 1 SSP9 RW - - X 0 SSP8 RW - - X Byte 17 CK505 PLL3 M/N Programming Register Bit Pin Name Description Type 0 1 Default 7 N Div8 N Divider 8 RW - - X 6 N Div9 N Divider 9 RW - - X 5 M Div5 RW - - X 4 M Div4 RW - - X 3 M Div3 RW - - X 2 M Div2 RW - - X 1 M Div1 RW - - X 0 M Div0 RW - - X Byte 18 CK505 PLL3 M/N Programming Register Bit Pin Name Description Type 0 1 Default 7 N Div7 RW - - X 6 N Div6 RW - - X 5 N Div5 RW - - X 4 N Div4 RW - - X 3 N Div3 RW - - X 2 N Div2 RW - - X 1 N Div1 RW - - X 0 N Div0 RW - - X Byte 19 CK505 PLL3 Spread Spectrum Control Register Bit Pin Name Description Type 0 1 Default 7 SSP7 RW - - X 6 SSP6 RW - - X 5 SSP5 RW - - X 4 SSP4 RW - - X 3 SSP3 RW - - X 2 SSP2 RW - - X 1 SSP1 RW - - X 0 SSP0 RW - - X Byte 20 CK505 PLL3 Spread Spectrum Control Register Bit Pin Name Description Type 0 1 Default 7 Reserved Reserved RW - - 0 6 SSP14 RW - - X 5 SSP13 RW - - X 4 SSP12 RW - - X 3 SSP11 RW - - X 2 SSP10 RW - - X 1 SSP9 RW - - X 0 SSP8 RW - - X Byte 21 M/N Enables Bit Pin Name Description Type 0 1 Default 7 Reserved RW 0 6 Reserved RW 0 5 Reserved RW 0 4 Reserved RW 0 3 Reserved RW 0 2 Reserved RW 0 1 M/N Enable CPU RW Disable Enable 0 0 M/N Enable SRC/PCI RW Disable Enable 0 The decimal representation of M Div (5:0) is equal to reference divider value. Default at power up = latch-in or Byte 0 Rom table. The decimal representation of N Div (9:0) is equal to VCO divider value. Default at power up = latch- in or Byte 0 Rom table. These Spread Spectrum bits will program the spread pecentage. Contact ICS for the correct values. These Spread Spectrum bits will program the spread pecentage. Contact ICS for the correct values. These Spread Spectrum bits will program the spread pecentage. Contact ICS for the correct values. |
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