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ICS952906A 数据表(PDF) 14 Page - Renesas Technology Corp |
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ICS952906A 数据表(HTML) 14 Page - Renesas Technology Corp |
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14 / 24 page  14 Integrated Circuit Systems, Inc. ICS952906A 1236A—08/06/07 I 2C Table: Group Skew Control Register Control Function Bit 7 3V66Skw3 RW 0000:0 0100:150 1000:300 1100:450 0 Bit 6 3V66Skw2 RW 0001:N/A 0101:N/A 1001:N/A 1101:600 0 Bit 5 3V66Skw1 RW 0010:N/A 0110:N/A 1010:N/A 1110:750 0 Bit 4 3V66Skw0 RW 0011:N/A 0111:N/A 1011:N/A 1111:900 0 Bit 3 PCISkw3 RW 0000:0 0100:150 1000:300 1100:450 1 Bit 2 PCISkw2 RW 0001:N/A 0101:N/A 1001:N/A 1101:600 1 Bit 1 PCISkw1 RW 0010:N/A 0110:N/A 1010:N/A 1110:750 0 Bit 0 PCISkw0 RW 0011:N/A 0111:N/A 1011:N/A 1111:900 0 I 2C Table: Group Skew Control Register Control Function Bit 7 PCISkw3 RW 0000:0 0100:150 1000:300 1100:450 1 Bit 6 PCISkw2 RW 0001:N/A 0101:N/A 1001:N/A 1101:600 1 Bit 5 PCISkw1 RW 0010:N/A 0110:N/A 1010:N/A 1110:750 0 Bit 4 PCISkw0 RW 0011:N/A 0111:N/A 1011:N/A 1111:900 0 Bit 3 Reserved Reserved RW 0 Bit 2 Reserved Reserved RW 0 Bit 1 Reserved Reserved RW 0 Bit 0 Reserved Reserved RW 0 I 2C Table: Slew Rate Control Register Control Function Bit 7 PCIFStr1 1 Bit 6 PCIFStr0 1 Bit 5 PCIFStr1 1 Bit 4 PCIFStr0 1 Bit 3 Reserved Reserved RW 1 Bit 2 Reserved Reserved RW 1 Bit 1 AGPStr1 RW 1 Bit 0 AGPStr0 RW 1 I 2C Table: Slew Rate Control Register Control Function Bit 7 RW 1 Bit 6 RW 0 Bit 5 PCIFStr1 1 Bit 4 PCIFStr0 1 Bit 3 PCIFStr1 1 Bit 2 PCIFStr0 1 Bit 1 PCIFStr1 1 Bit 0 PCIFStr0 1 PCICLK (6) Strength Control RW - 01 = 0.75X 11 = 1.00X 00 = 0.63X -- PWD 01 01 -- -- - 01 Byte 20 Pin # Name Type 0 1 CPU-PCI 7 Step Skew Control (ps) - 01 = 0.75X 10 = 0.88X -- 00 = 0.70X 10 = 0.90X 11 = 1.00X -- - Pin # - - - - - - - - - - - - - - - - - PWD AGPCLK Strength Control - Byte 22 Pin # Name - PWD - PCICLKF (2:0) Strength Control - Byte 21 Pin # Name Type RW 00 = 0.63X CPU-PCI F(2:0) 7 Step Skew Control (ps) - - - - - PWD - CPU-3V66 7 Step Skew Control (ps) - - - Byte 19 Name Type 00 = 0.63X PCICLK (1:0) Strength Control 00 = 0.63X 10 = 0.88X 01 = 0.75X 11 = 1.00X 01 = 0.80X 11 = 1.00X 01 = 0.75X 11 = 1.00X Type RW 00 = 0.63X 10 = 0.88X REF_Slw REF Slew Rate Control PCICLK (5) Strength Control 00 = Medium 10 = Strong 01 = Weak 11 = N/A 10 = 0.88X PCICLK (4:2) Strength Control 10 = 0.88X 01 = 0.75X 11 = 1.00X RW RW |
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